Category: Computer Accessories

Why call for the 3.5mm headphone jack to be replaced on mobile devices

Article

Intel Thinks USB-C Should Replace the Headphone Jack | Gizmodo

My Comments

Could this be the new audio connection for your smartphone?

Could this be the new audio connection for your smartphone?

Intel has raised the possibility that the common 3.5mm headphone jack not exist on a smartphone or similar audio device. Here, they would rather that the USB Type-C connection serve as the phone’s audio connections.

There was a similar outcry when Apple proposed this idea for a newer iPhone design by requiring the use of their proprietary Lightning connection as the audio connection.

The problem is that the 3.5mm phone jack has been established as the common way to connect mobile devices to headphones and audio equipment.

The Intel approach requires the use of the USB Type-C connector which implements standards accepted by all of the industry. It is different to Apple’s approach because the Android and Windows platforms place a high expectation on the concept of “open-frame” computing where there is a preference for hardware and software standards and specifications accepted by many different vendors rather than the one vendor.

Plantronics BackBeat Pro Bluetooth noise-cancelling headphones

High-end headphones like these noise-cancelling headphones could be powered by your smartphone or laptop

Firstly, there is the USB Audio Device Class which has allowed for USB sound modules and USB DACs to exist without the need to add extra drivers. This can allow for a high-grade digital-analogue converter to be integrated in a high-quality USB headset or supplied as a phone-powered USB sound-module accessory that you plug your high-quality headphones in to.

For headphones, this could lead to ideas like surround-sound processing such as to use hardware to convert Dolby Digital or DTS surround sound to Dolby Headphone surround sound. It could permit the headphones to implement sound processing such as equalisation or echo cancellation so they sound their best in all situations. Even when you speak in to the phone, the newer technology will provide some benefit such as using a microphone array to catch your voice better.

To the same extent, a USB sound module that works with high-grade microphones could open up paths for your smartphone to make good recordings for your podcast or video.

Technics Grand Class G30 hi-fi system with media server press image courtesy of Panasonic

You may soon find amplifiers and stereos equipped with a USB Type-C connection on the front so you can play our new smartphone through the speakers

Another path is to use the Multimedia Transport Protocol that operates over the USB connection to play music through your car stereo or home stereo system, using the music system’s control surface to navigate your audio content while the currently-playing music details show up on the music system’s display.

Intel’s idea also investigated the possibility of an analogue-audio connection via the USB Type-C connection to cater to the budget end of the accessories market. This is to allow for headsets and audio adaptors that have no digital-audio functionality to exist.

Another common device class is the USB Human Interface Device Class which is used primarily with mice and keyboards but there is a subset of “called-out” control types that highlight consumer-electronics and business device control applications like transport control or call control. This could open the path for USB headsets and adaptors to have full control for calls and music like the full AV transport-control quota or two-button call control.

The power-supply option that USB Type-C offers allows for the phone to power active-noise-cancelling headphones or headphone amplifiers. Similarly, an audio accessory like a stereo system or an audio adaptor that has a high-capacity battery could provide power to the phone.

The Sony SBH-52 Bluetooth Headphone Adaptor - one of the Bluetooth adaptors that may be necessary for newer smartphones

The Sony SBH-52 Bluetooth Headphone Adaptor – one of the Bluetooth adaptors that may be necessary for newer smartphones

Bluetooth will still exist as a wireless audio-accessory connection alternative as long as the phone and accessory still work to the established Bluetooth Profiles for their applications.

Kingston HyperX Cloud II headset USB adaptor

This USB audio adaptor could be considered as a way to connect existing headphones to your new smartphone

The idea that we will lose the ability to use our favourite audio systems and headphones that depend on the classic 3.5mm phone jack when we get a newer handset can be nullified when we use a USB sound module for a wired connection to our smartphones. As I mentioned before, those of us who appreciate the high-quality sound could end up benefiting from this kind of accessory especially where it is optimised for that kind of sound. An example of a USB sound-module device that I had dealt with was one that came with the Kingston Hyper-X Cloud II gaming headset that I previously reviewed, which presented itself to Windows as a USB Audio input and output device. If we want the wireless link, we could look for that Bluetooth audio adaptor typically sold with a pair of intra-aural earphones and connect our favourite headphones to this device like I do with the Sony SBH-52.

If this proposition is to work properly, the sound-processing circuitry need also to be power-efficient so you don’t end up draining your smartphone’s battery or depending on external power supplies to use your smartphone. Similarly, other accessory vendors may need to add USB Type-C hub functionality to their accessories like USB battery packs so that these headphones can work while the smartphone is being powered from the battery pack. Or the smartphone vendors may have to concede to having 2 USB Type-C ports on their phones to support USB headphones and USB external power supplies for example.

But whatever happens, this could open another path for innovation to take place when it comes to the supply of accessories for portable audio and video equipment.

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The 3.5mm digital-analogue audio socket is still relevant for today’s portable computing equipment

Laptops like the Toshiba Satellite Radius 12 could benefit from a 3.5mm digital-analogue audio output jack for an audio connection

Laptops like the Toshiba Satellite Radius 12 could benefit from a 3.5mm digital-analogue audio output jack for an audio connection

Increasingly, there has been the rise of portable audio equipment associated with computers and there are opportunities to exploit what this all about for better sound.

Most of this equipment is implementing a 3.5mm tip-ring-sleeve phone socket for analogue line-level audio input or output connections. This is because the socket type is considered to be a “low-profile” connection that allows the equipment to be designed to be slim and neat. The same connector even appeals to the traditional PC expansion cards where the socket can easily exist on the card’s bracket.

Sony MZ-R70 MiniDisc Walkman image courtesy of Pelle Sten (Flickr http://flickr.com/people/82976024@N00)

One of the Sony MiniDisc Walkmans that implemented a 3.5mm digital-analogue audio input jack

Some devices, namely video projectors use the 3.5mm phone jack for this purpose, whether as an input or an output while this connector is also used as a so-called ad-hoc “walk-up” audio input or output connection on amplifiers or stereo systems such as an auxiliary input. This exploits the ability associated with the “phone” sockets where they can survive being connected and disconnected repeatedly thanks to their original use on the old telephone switchboards.

Sony took this connection type further during the MiniDisc era by equipping some of the CD Walkmans with a line-out jack that also had an LED in it and equipping their MiniDisc Walkman recorders with a mic/line input jack that had a photodiode in this socket. Then the user would connect a fibre-optic cable with 3.5mm fibre-optic connections on each end to provide a digital link between the CD Walkman and the MiniDisc Walkman to digitally copy a CD to MD with the sound transferred in the SP/DIF digital domain.

Economy data projector with VGA input sockets

HDMI-equipped projectors could even exploit the 3.5mm digital-analogue output connection for use with sound systems that have a digital input

You would still be able to connect the portable device to a normally-sessile device like a digital amplifier by using an adaptor cable which had a Toslink plug on one end and a 3.5mm fibre-optic connection on the other end or use a Toslink-3.5mm adaptor with an existing Toslink fibre-optic cable.

A few other companies exploited this connection beyond the portable realm with Pace implementing it as a digital audio output on some of the cable-TV / satellite-TV set-top boxes. The set-top application implemented this connection just for the digital-audio application while the analogue audio connection was facilitated through the multiple-pin SCART connection.

This same single-socket connection could be easily implemented for a video projector that uses an HDMI input and a 3.5mm audio-output jack so you could have a digital connection to a sound system rather than an analogue audio link. This can also apply to laptop computers which are increasingly being purposed as party jukeboxes by younger people along with “mini-DJ” accessories pitched at iPod/iPhone users who want to play DJ.

Conversely, TVs and stereo systems could implement the same digital/analogue input for the auxiliary-input connection that is reserved on a TV for computer equipment or on the front of a stereo system for “walk-up” connection of portable digital-audio players.

As far as equipment design is concerned, the single socket for a SPDIF-optical-digital or analogue audio connection saves on designing and budgeting for two sockets if you want to facilitate both a digital and an analogue audio connection.  This is more important if the goal is to design equipment that has a low profile or is highly portable. The same approach can also appeal to providing for an ad-hoc digital/analogue input or output where the connection exists on an “as-needed” basis rather than a permanent basis.

Personally, I would like to see the 3.5mm digital-analogue audio jack that Sony valued during MiniDisc’s reign as something that can work with portable computing equipment, video projectors, smartphones and the like for transmitting audio in the SPDIF digital domain.

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Using Bluetooth for wireless keyboards, mice and game controllers

Bluetooth could be the preferred way to go for all wireless keyboard and mice applications

Bluetooth could be the preferred way to go for all wireless keyboard and mice applications

A lot of wireless mice and keyboards offered at affordable prices and pitched for use with desktop computers are implementing a proprietary wireless setup which requires them to use a special USB transceiver dongle.

This is compared to some wireless mice, keyboards and games controllers that are offered for laptops and tablets where they have integral Bluetooth support. This is because the laptop and tablet computers are the main computers that come with Bluetooth on board. It is compared to desktops, mainly traditional “three-piece” desktops, that don’t have this feature and require the use of a USB Bluetooth dongle to gain Bluetooth connectivity.

Wireless mouse dongle

The typical easy-to-lose dongle that comes with most wireless mice

A reality that is coming crystal clear is that the laptop computer along with the all-in-one desktop computer is being seen as a viable alternative to the traditional “three-piece” desktop computer for one’s main computing device. This is underscored with laptops that are taken between work and home along with myself seeing quite a few computer setups where a laptop computer is hooked up to a traditional keyboard and mouse and one or two desktop-grade monitors. Some of these setups even run the laptop’s screen as part of a multi-screen setup.

Sony VAIO J Series all-in-one computer keyboard

Bluetooth shouldn’t just be for mobile keyboards

To the same extent, most of the “all-in-one” desktops are being equipped with Bluetooth functionality as a matter of course. This is more so where the goal is to compete with the Apple iMac range of “all-in-ones” or make this class of computer more impressive.

The Bluetooth advantage does away with the need to install a USB wireless dongle for that wireless keyboard or mouse or the risk of losing one of these dongles. For traditional desktop users, they can use and keep one Bluetooth dongle which works well if you want to move a Bluetooth keyboard and/or mouse between a secondary laptop and the desktop computer. Similarly the same Bluetooth dongle can support multiple devices like a keyboard, mouse, game controller and multipoint-capable Bluetooth headset.

The gap I am drawing attention to is the lack of traditional-sized keyboards, trackballs and mice fit for use with desktop computers, including novelty mice like the “model-car” mice, that work using Bluetooth. Manufacturers could offer a range of traditional-sized input devices that work with Bluetooth, preferably having Bluetooth LE (Smart) support, as part of their product ranges to cater for laptop-based and all-in-one-based personal computing setups.

Having Bluetooth LE (Smart) support would benefit this class of device because users shouldn’t need to be changing the peripherals’ batteries frequently which is something that can affect Bluetooth setups.

As well, there can be an effort towards improving responsiveness for Bluetooth keyboards, mice and games controllers to maintain Bluetooth’s appeal to the gaming community. Here, this would also be about working with other Bluetooth device clusters such as in a LAN-party environment where toe goal for gamers is to frag each other out rather than being “trampled on” by the enemy.

What really should be looked at is to standardise on Bluetooth as a way to wirelessly connect input devices like keyboards and mice to computer equipment.

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Having trouble with Apple or similar headsets and your XBox One controller?

Article

Use Apple Earbud Headphones with Xbox One Controller Without the Buzzing Feedback Sound | OS X Daily

My Comments

JBL Synchros E30 headphones

Not all headsets may work fully and properly with all devices due to different wirings

The article showed a compatibility issue when it comes to using different wired stereo headsets with different communications devices, whether they be computers, smartphones or games controllers.

How are the headsets wired?

There are two ways of wiring a stereo headset’s plug where both of them use a 4-conductor 3.5mm phone plug. The tip and first ring in both wirings are for the stereo sound to the headset speakers but how the second ring and the sleeve are wired differ between the wirings.

XBox One games console press photo courtesy Microsoft

You could set the XBox One to work properly with your Apple or similar headset courtesy of a workaround

The CTIA wiring that Apple, Samsung and Sony uses for their phones and a great majority of headsets implement wires the second ring as the common or ground and the sleeve for the microphone. Conversely the OMTP wiring that Microsoft uses for their XBox One controllers and manufacturers like Nokia and a few Android handset builders has the second ring used for the microphone and the sleeve for the common or ground.

This problem can cause headsets that observe one of these wirings not to work properly with phones or other devices that observe the other wiring, such as with excessive noise or the microphone not working.

There are some ways to work around the problem. Firstly, you could purchase an OMTP / CTIA headset adaptor which is a plug-in jack adaptor that reverses the wiring so that an OMTP headset can be compatible with a CTIA device and vice versa. This can extend to having the headset’s plug wiring modified by a knowledgeable electronics technician to suit your device, something that could be done for “beer money”. If you have headphones that come with a headset cable, you could purchase another headset cable and have that modified to work with another device.

When I review headsets, I have raised this issue when it comes to headset connectivity and have suggested that headset manufacturers either supply a CTIA/OMTP adaptor plug or integrate a changeover switch for the affected connections into their headset or microphone pod designs. Similarly, device manufacturers could design their devices to work with both CTIA and OMTP headset wirings, something that can be facilitated at software level such as through a setup-menu option or auto-detect routine; or on a hardware level through a changeover switch on the device. The recent Lumia Windows smartphones have answered this problem by implementing a “universal headset jack” design.

There were other compatibility issues raised between headsets targeted at Apple devices and headsets targeted for other devices even if they were wired to CTIA specifications. This came in the form of the microphone’s impedance or how the buttons on the microphone pod send control signals to the host device.  But most of the other device manufacturers are answering this problem through the use of microphone-input circuitry that adjusts itself to the needs of the microphone that is connected to it. Similarly, the headsets are being required to effectively have their main control button short the microphone and ground (common) connections to signal the device for call-flow or media play-pause control.

Dealing with your XBox One’s controller

The headset jack on the XBox One’s controllers happens to be wired for OMTP which is also a common wiring method for regular computers, especially laptops. But, as highlighted in the OSX Today article, the Apple headset was wired up to CTIA standards.

But the author recommended a workaround to this problem by disabling microphone monitoring through the XBox One’s configuration menu. This is to reduce the buzzing associated with an electret-condenser microphone wired the wrong way, but may limit the headset’s functionality as a chat device when you play an online game for example.

Here, you have to enter the XBox One’s setup menu by double-clicking the XBox button on the controller, then select the “gear” icon to access the “Settings” menu. Then you have to turn the “Headset Mic” setting off and turn the “Mic Monitoring setting down to zero” to achieve this goal.

Personally, I would look towards purchasing a CTIA/OMTP adaptor online or through an electronics store and use this with the XBox One’s controllers so you can use the microphone on your Apple or other CTIA-compliant headset when you game online.

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Product Review- JBL Synchros E30 headphones

Introduction

JBL is best known over a long time for loudspeaker systems, especially PA/commercial-audio and hi-fi speakers. Examples of these speakers include the JBL hi-fi speakers that were designed the same way as in-studio monitor speakers and known for their tight bass response; and the JBL EON speakers which were one of the first active-design PA / sound-reinforcement speakers to use biamplification in that class of speaker.

But as for headphones, they haven’t been known much for this product class. This is because brands like AKG, Audio Technica and Sennheiser have dominated this product class when it comes to good hi-fi or monitor-grade headphones.

Now I am reviewing the JBL Synchros E30 headphones which are positioned more or less as “all-round” stereo headphones for personal-audio applications. These are a headset with an in-line microphone designed for use with your smartphone or tablet or as headphones for use with your MP3 player or laptop.

JBL also offers the Synchros E40BT headset which is a Bluetooth wireless variant of this on-ear headset which may be handy for those of you who value wireless connectivity with your smartphone, tablet or laptop computer.

JBL Synchros E30 headphones

Price

Recommended Retail Price: AUD$129.95

Type

Headphone Assembly Traditional over-the-head
Driver Positioning Supra-aural (on the ear)
Driver Enclosure Closed Back
Microphone Position In-line – detachable cable
Source Device Connectivity
Headset 3.5mm four-conductor plug
Adaptors None

The headset itself

Connectivity

JBL Synchros E30 headphones - detachable cable

Detachable cable

Like an increasing number of headphones that are coming on the market, the JBL Synchros E30 is equipped with a detachable headset cable which has an integrated microphone. This will most likely be wired for CTIA (Apple) applications and may not operate properly with OMTP applications.

The advantage of this is that you can repair or replace the cord if it breaks which is something that can easily happen with personal-audio headphones as you use them a lot. As well, you could have one or more headset cords made up for different applications very easily, something that can be done if you or someone you know is handy with a soldering iron.

Comfort

JBL Synchros E30 headphones - earcups

Hinge-style anchor for earcups

The hinge design that JBL uses for the Synchros E30 headphones makes it easier to store the headphones flat but it can take a while to get the headphones to fit properly on your head for best sound response.

The “over-the-ear” earcups have a vinyl ring that doesn’t absorb sweat but is very confusing where headphones that have a similar ring encourage you to have this wrap around your ear.

Once these headphones are adjusted properly, you can wear them for a long time without them being too uncomfortable.

Sound

The JBL Synchros E30 headset has the kind of efficience that you would expect for headphones that are to be used with battery-powered equipment. This means that they can sound loud therefore you may be able to run them on lower volumes to save on battery power.

Music

The JBL Synchros E30 does well on the bass response by being able to “reach down there” but it needs the use of equalisation at the source if you want to bring this out. This may be achieved by implementing a “bass-boost” function or a player that uses tone controls or a graphic equaliser. The high frequencies are still there and come out clear.

Video and games

I have watched some video content with these headphones and the dialogue does come through clearly. The effects may not have the punch unless there is some form of equalisation along the way.

I also tried these headphones with an iPhone that a kid was using to play a motor-racing game and noticed that the sound effects associated with that game came across very sharply. But as I have said with music, there still needs to be some equalisation to bring out the bass which is important for some sound effects like motor-vehicle noise or gunfight.

Communications

I have made and taken a few phone calls and the caller’s voice had come across intelligible and clear. The frequency range that these headphones offer could also make them suitable for HD Voice applications like Skype, Viber and VoLTE so you can hear your callers better.

Noise reduction and handling in noisy environments

I have used these headphones up the back of a transit bus and found that the JBL Synchros E30 headphones do reduce the ambient noise from the bus’s engine somewhat. As well, you can still hear the program content if you run the volume hard on your portable device.

Conclusion

I would recommend that one buys the JBL Synchros E30 as a baseline “all-round” headset for most users whether they listen to music, watch video content, play computer games or use them for online communications. This comes across more where users place emphasis on durability with such features as a detachable cord or a strong hinge design along with a sound that can come across as being “authentic”.

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Gibson releases high-quality fun-looking mics to go with your computer

Article

Gibson Wants Your Desktop Mic To Sound Better and Look Sleeker | Gizmodo

From the horse’s mouth

Neat Mics (Gibson)

Product Page

My Comments

Gibson, associated with making and enjoying music in many ways has brought out a colourful high-quality USB microphone which is pitched as a companion to your desktop or laptop computer or Android tablet.

This company, known for the Les Paul electric guitars has encompassed many music and audio brands like Baldwin pianos; TEAC, TASCAM, Onkyo and Integra audio equipment, Epiphone guitars and Wurlitzer juke boxes. They also integrated Neat Microphones who focus on microphones pitched for computer use.

The Neat Widget range of desktop microphones are built around a stylish retro-future look but are also about a high-quality sound for that podcast or Skype videocall. These microphones implement pop filters to handle sudden volume jumps and connect to your computer via a USB cable or your Android phone or tablet via the USB cable and a USB OTG adaptor, presenting itself to your device as a USB Audio device. This avoids the need to mess with many different preamps and cables to get them running.

The Neat Widget microphones come in green, red and blue and sell for US$99 from the “usual suspects”. They can be of benefit of you are wanting something better than a laptop’s or tablet’s integrated microphone or want to kit out your traditional desktop computer with a microphone other than the condenser microphone built in to that Webcam.

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Product Review–Braven Mira Bluetooth speaker

Introduction

I am reviewing the Braven Mira which is a small single-piece portable Bluetooth speaker that is designed for use in the bathroom or kitchen. This circular speaker is designed to be water resistant so it can be used in the shower or near the sink and has a kickstand that can double as a hook to hang over the showerhead or something similar.
Braven Mira Bluetooth speaker

Price

The unit itself:

RRP including tax: AUD$129

Form Factor

Single-piece speaker

Connections

Input Count as for a device
Audio Line Input
(connect a tape deck, CD player, etc)
1 x 3.5mm stereo socket
Digital Audio Input Bluetooth
Network
Bluetooth A2DP and Hands-Free Profile with NFC setup

Speakers

Output Power Watts (RMS, FTC or other honest standard) per channel Stereo
Speaker Layout 1 2 full-range drivers
1 passive radiator

The unit itself

The Braven Mira is a circular portable Bluetooth speaker pitched for use in the bathroom, kitchen, laundry or pool area. This is due to it being water-resistant to IPx5 standards which means that it can survive water splashes or rainfall. But you have to make sure nothing is plugged in to it and that the cap covering the sockets on the side is closed properly.

Braven Mira Bluetooth speaker with kickstand

The C-shape kickstand that doubles as a hook

It also has a C-shaped kickstand that allows it to become a hook so you can hang it on a shower head, a tap (faucet) or door knob. This allows for versatile positioning options that suit your needs perfectly.

Like other Braven Bluetooth speakers, the Mira has four main operating controls with two that double as volume / track navigation controls. To make the speaker discoverable for pairing, you have to hold the PLAY button until the speaker makes a repeated beep tone. It doesn’t support NFC “touch-and-go” paring for “open-frame” (Android and Windows) personal-computing devices.

A feature that is very common on this class of speaker is that the Braven Mira can serve as a speakerphone for whenever you want to talk hands-free on the phone or engage in a videocall.

I have used the speaker with my phone and when I have run it at the maximum level, it sounds very similar to a small radio. You wouldn’t expect high-quality sound from a speaker like this one or any of its peers but it is loud enough to fill a small room.

Limitations and Points Of Improvement

Personally, I would like to see Braven add two extra buttons to the Mira for track selection rather than you holding down the volume buttons to change tracks. This can avoid operational mistakes when you skip a song when you intend to turn it down. As well, the controls could be embossed more distinctively so you can identify them at a touch especially if you are having to contend with shampoo in your eyes.

Like with some of their other Bluetooth speaker products, Braven could offer variants that have an integrated broadcast-radio tuner so they can serve as ordinary portable radios.

Conclusion

I would still see the Braven Mira earn its keep as a multipurpose utility speaker that you can use with your phone, tablet or 2-in-1 especially if these devices don’t put up much in the way of sound output for your needs.

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An add-on microphone is available to turn existing headphones in to a headset

Article (Product Review)

Audiophiles Like Games, Too: Hands On With Antlion’s Detachable ModMic 4.0 | Tom’s Hardware

From the horse’s mouth

Antlion Audio

ModMic product page

My Comments

There are situations where we want to purpose a pair of good headphones like hi-fi-grade headphones to become a stereo headset with microphone. Here, you may want to use these “cans” for gaming or communications and they have a captive cable so you can’t install a microphone cable to use them as a headset. Similarly, you may have a wired stereo headset that has a broken mike but works well as headphones.

Antilion Audio has supplied an add-on boom microphone that clips to an existing pair of headphones using a magnetic clip that you fix to your headphones. The ModMic uses a long microphone cord to connect to your computer which would have to have a separate microphone jack. It can be adjusted to suit best sound pickup as with other boom-capable headsets.

If you deal with a laptop, tablet or other increasing number of devices that uses a four-conductor headset jack, you would need to purchase a headset Y-adaptor from an electronics store so you can use this same jack to connect your headphones and the ModMic to the device. Personally, I would like to see Antilion Audio offer a headset jack adaptor so you can use this mike and your cans with devices that have headset jacks.

At least this is a way to add another usage case to your good headphones whether for gaming or for communications setups that support HD Voice sound quality.

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USB Type-C appears as a car charger and external battery pack

Nomad RoadTrip

Article

The First USB-C Car Charger Also Throws In A Backup Battery | Gizmodo

From the horse’s mouth

Nomad

RoadTrip Car Charger (Product Page)

MOS ReachGo Battery Bank

Article

The First USB-C Battery That Can Charge A Laptop At Full Speed | Gizmodo

From the horse’s mouth

MOS

Reach Go (Product Page)

My Comments

Two companies have put forward power supply accessories which implement the new USB Type-C connector along with the USB Type-A connector.This is to capitalise on the newer phones, tablets and laptops that will be equipped with this new USB connector and provide a future-proof setup

The MOS ReachGo which is the first external battery pack to implement USB Type-C connectivity is similar to most USB battery packs although it is a slimline device. It has two USB Type-C and 2 USB Type-A connections with the ability for it to work as a USB 3.0 hub. It capitalises on the USB Type-C standard by being able to charge up a MacBook Air at full speed courtesy of its 15000mAh battery.

The Nomad RoadTrip is the first USB car charger of the kind that plugs in to your vehicle’s 12-volt accessory socket or cigar-lighter socket to implement USB Type-C connectivity. This unit provides 2.1A each to both the USB Type-C and USB Type-A sockets and has an integrated 3000mAh battery pack so it doubles as an external battery pack for your thirsty smartphone. It would most likely be able to work well with most mobile devices but may not provide the power to charge up a laptop like the MacBook Air.

It is worth knowing that you can use the Type-C connectivity on these chargers with your existing USB device if you use a USB Type-C adaptor cable. Out of the two, I would find that the MOS ReachGo battery pack as being one that shows promise for the Type-C capabilities.

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Using Bluetooth audio devices with your laptop computer

Braven BRV-X outdoor Bluetooth speaker

Braven BRV-X outdoor Bluetooth speaker – another of many Bluetooth speakers with speakerphone functionality

There is an increasing number of Bluetooth-connected wireless audio devices available for  use with smartphones and similar devices. But you may want to use these headsets, audio adaptors, Bluetooth speakers or Bluetooth-integrated audio devices with your laptop instead of those tiny speakers that are the norm for these computers. The best example for the speakers would be the Bose SoundDock speakers, especially the SoundDock 10, due to its good bass response, when used with the Bluetooth adaptor. As well, I ran a test setup with the Motorola DC800 Bluetooth adaptor connected to an older Sony boombox and had the review-sample Fujitsu LH772 laptop being fed through this Bluetooth adaptor.

Similarly, there are those of us who may want to use a Bluetooth headset like the Plantronics BackBeat Pro with a laptop computer so you can roam around the office or home listening to your favourite tunes or podcast or as a contingency measure to avoid missing that important VoIP call.

How a Bluetooth audio setup would function for a laptop

You can achieve these setups with Bluetooth-equipped laptops that run Windows 7, MacOS X Snow Leopard and Linux and newer versions of these operating systems. This is due to the supply of a class driver for the Bluetooth A2DP audio profile  and Hands Free Profile as part of the operating system distributions.

Initial setup

First, you have to set up the Bluetooth A2DP-capable audio device to become discoverable. The method for this is explained in the instructions that come with the device but you typically may have to hold down a setup button to achieve this goal.

Plantronics BackBeat Pro Bluetooth noise-cancelling headphones

Headphones you can treat your laptop to

Then you have to put the computer in to a “Bluetooth setup” mode in order to annex the device to the operating system. In WIndows 7, you would have to click on “Devices and Printers”, then click “Add Device”.

After you complete these procedures, both the device and the computer start to pair up and identify themselves to each other. The computer would then find and install the A2DP audio-device class drivers that are part of the operating system. In some cases, the class driver may be fetched from Microsoft’s or Apple’s Website. The same thing will also happen with the Bluetooth Hands-Free Profile or Bluetooth Headset Profile when you initially connect a Bluetooth headset, headphone audio adaptor or other device equipped for communications functionality.

Now the Bluetooth audio device is defined as a sound device and some Windows setups may have it run as the default audio device for all of the laptop’s sound output.

Which sound device

Bluetooth device listed alongside default audio device

List of audio playback devices including the Bluetooth audio device

But you may want to have a split setup so that music and video sound go to the Bluetooth speakers and all of the notification sounds come via the laptop speakers. Here, you would have to set the integrated sound subsystem as the default audio device. Then you would have to set iTunes, Windows Media Player or other media-management software to use the Bluetooth A2DP audio device.

This latter setup may not work well with software like games, the Spotify desktop program or Web browsers where there isn’t an option to specify the sound output device for that application. Here, you would have to specify the Bluetooth audio device as your default audio device to have the soundtrack from video on demand including YouTube videos, or your Spotify playlist coming through that device.

Bluetooth headsets and speakers with speakerphone functionality will cause Windows to purpose the Bluetooth Hands-Free Profile or Headset Profile as a Communications Device and may cause Windows 7 to determine it as a Default Communications Device.

The controls on these Bluetooth devices should map through to the applications’ controls courtesy of operating system support for Bluetooth AVRCP control profile for media navigation and the call-control functionality of the Hands-Free and Headset Profiles. This will apply to applications that currently have the focus for media playback or communications.

Multipoint Operation

The Sony SBH-52 Bluetooth Headphone Adaptor - supports multipoint operation for two devices

The Sony SBH-52 Bluetooth Headphone Adaptor – supports multipoint operation for two devices

An increasing number of communications-capable Bluetooth devices have support for “multipoint” operation where they can work with two different source devices. This function is typically to support people who use two mobile phones such as a “personal” one and a “work” one.

As I discovered when reviewing the Sony SBH-52 Bluetooth headphone adaptor, I fund that this function can also work with a computer. This can be of use if you are maintaining a playlist or listening to Web content on your laptop.

Here, you have to determine which device is your “priority” device which allows the headset to primarily control that device. This is something you would do either through the device’s setup menu, a desktop or mobile control program or a certain keypress sequence depending on the device. You may be able to at least use the call-control button to answer and end calls when you are using your secondary device. It is a good idea to set the laptop as the priority device when you are playing content from it or are wanting to use a VoIP app that may come across as being rickety.

Conclusion

Once you know what your Bluetooth-capable laptop can do with those Bluetooth audio accessories, you can then let it perform at its best with these devices and they don’t need juhst to be considered for mobile phones anymore.

Updates

This is to reflect newer Bluetooth hardware that I have reviewed along with highlighting the Bluetooth Hands-Free Profile used for communications purposes and multipoint operation offered by an increasing number of Bluetooth devices.

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