Category: Mobile Phone Accessories

Mixing audio and Bluetooth Low Energy–what is happening

Article

Sony SBH-52 Bluetooth Headphone Audio Adaptor

Audio over Bluetooth Low Energy could make these devices last for a long time on a single battery charge

Apple Used Bluetooth Low Energy Audio for Cochlear Implant iPhone Accessory | MacRumors

My Comments

Any of you who have used Bluetooth headsets with your smartphones may have come across situations where the headset ceases to function or sounds the “low battery” signal when you use these devices a lot. This can happen more so if you are listening to music then make or take a long phone call using the headset and is something I had experienced many times with the Sony SBH-52 audio adaptor. But the audio protocol is being worked on to avoiding consuming too much battery runtime.

Plantronics BackBeat Pro Bluetooth noise-cancelling headphones

.. as it could with Bluetooth headsets

Apple and Cochlear, who are behind the Australian-invented Cochlear Implant hearing-assistance technology, have developed Bluetooth Low Energy Audio to provide a high-quality audio link between mobile devices and headsets but make very little demands on the battery. As well, the Bluetooth Special Interest Group are working on a similar protocol to achieve these same gains, with the goal to have it part of Bluetooth 5.0. But this has to be supported in a vendor-independent manner in the same context as the current Bluetooth audio technologies that are in circulation.

But why is there an imperative to develop a low-energy audio profile for Bluetooth?

One key usage class is to integrate Bluetooth audio functionality in to hearing aids and similar hearing-assistance devices that are expected to run for a very long time. Here, we are also talking about very small intra-aural devices that may sit in or on your ear or be integrated in a set of eyeglasses. The goal is to allow not just for audio access to your smartphone during calls or multimedia activity but even to have an audio pathway from the phone’s microphone to the hearing-assistance device as well as the phone being a control surface for that device.

Similarly, there is a usage goal to improve battery runtime for Bluetooth headsets and audio adaptors such as to avoid the situation I have described above. It can also cater towards improved intra-aural Bluetooth headset designs or lightweight designs that can, again, run for a long time.

Let’s not forget the fact that smartwatches are being given audio abilities, typically to allow for use with a voice-activated personal assistant. But devices of this ilk could be set up to serve full time as a Bluetooth headphone audio adaptor with the full hands-free operation. The expectation here as well could even be to have the display on the wearable active while in use, whether to show the time, steps taken or metadata about the call in progress or whatever you are listening to.

Once audio over Bluetooth Low Energy technology is standardised, it could be a major improvement path for Bluetooth-based audio applications.

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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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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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Microsoft makes a foldable version of its universal Bluetooth keyboard

Article

Microsoft Universal Foldable Keyboard (side) - press picture courtesy of Microsoft

Microsoft Universal Foldable Keyboard

Microsoft Releases Universal Foldable Keyboard | Tom’s Hardware

Previous Coverage

Microsoft Hardware now offers a Bluetooth keyboard that works with all mobile platforms

From the horse’s mouth

Microsoft

Microsoft Universal Folding Keyboard

Press Release

Video

My Comments

Microsoft Universal Foldable Keyboard (open) press photo courtesy of Microsoft

The keyboard folded out

Microsoft previously released a universal keyboard pitched towards those of us who use smartphones and tablets. This Bluetooth keyboard is designed to be operating-system agnostic so you can use it with your iPhone, iPad, Android smartphone or tablet or your Windows Phone or tablet. This is facilitated with a hardware switch that allows you to select between different devices and keyboard layouts.

Now they have issued a variant of this keyboard that folds up like a book. They haven’t neglected the keyboard’s intended use and working around the problems associated with this. Rather, the Universal Foldable Keyboard is designed to be durable so as to allow for frequent and heavy “on-the-road” use which also involves throwing it in to backpacks, handbags and other similar personal luggage. The key pitch and keyboard switch design makes it similar to most small notebook computers, thus allowing for accurate touch typing.

At least this is an example of a keyboard that isn’t just about catering to an iPad or an Android tablet. Rather it is one that can even cater to a lot more devices that have Bluetooth connection for input devices, including desktops equipped with USB Bluetooth dongles or smart-TVs, games consoles and other video peripherals that have Bluetooth functionality and support use of Bluetooth keyboards. It is also about something that is neat and compact and ready for travel with your mobile devices.

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KFC puts forward the idea of a flexible Bluetooth keyboard as a tray-mat

Article

KFC Puts Keyboards In Trays So Greasy Chicken Fingers Can Keep Texting | Gizmodo

My Comments

The fast-food industry are always working on ways to promote their wares and one way they have always used is the “tray-mat” which is a sheet of paper with promotional material printed on it that is placed on the serving trays. In some cases, especially with McDonalds, this is also used as part of a sweepstakes or competition where you can win prizes and, of course, these end up as a take-home collectable or souvenir.

But the KFC franchises in Germany have taken this further by integrating a Bluetooth keyboard in one of these tray-mats. Here, they pitch the idea of keeping your greasy fingers off the smartphone screen while you type out replies to SMS, social-media or other messages. This exploits the standard Bluetooth HID Device Profile supported by the mobile operating systems and pairs with the host device when powered on.

Do I see this as being more than a promotional gimmick or toy? It can be an alternative to various’”laser-projector” ideas that project the keyboard to a surface like a table or desk and could have appeal for wherever you have to enter text in a dirty environment. It is also a way to prove that Bluetooth can be integrated in paper, flexible plastic, cloth and similar materials and can be implemented with these materials as a human interface device.

In this context, the flexible Bluetooth keyboard could work well as a “roll-up” keyboard or as part of a loose-leaf folder system whether as a binder, divider or a leaf. Use of different layouts could come in handy like a piano keyboard for music input or a group of buttons that work with particular apps.

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SanDisk releases the first USB memory key with a Type-C connection

Article

MWC 2015 : la toute première clé dotée de la prise USB réversible de demain ! | 01Net.fr (French language / Langue Française)

From the horse’s mouth

SanDisk

Press Release

Product Page (Dual Drive Type C)

My Comments

The USB Type C connector

SanDisk Dual Drive Type C memory key press picture courtesy of SanDisk

SanDisk Dual Drive Type C memory key

has been ratified as a small reversible connector for use with low-profile devices. It will start to appear primarily on the next wave of tablets, smartphones and, perhaps, ultraportable notebooks due to its small size.

But the device that ends up in most USB ports is the USB memory key, also known as a memory stick, thumb drive or jump drive. These are the same size as a typical house key or stick of chewing gum but contain an integrated flash drive that plugs in to a computer’s USB port, presenting itself to the operating system as a removeable disk.

SanDisk has anticipated the arrival of these devices and has launched at Mobile World Congress 2015 a USB memory key that can plug in to a USB Type-C socket. The 32Gb Dual Drive has on one end a Type A plug to plug in to most computers in operation and on the other end a Type C plug for the up-and-coming tablet or ultraportable. Of course, the USB 3.0 device will present itself logically as a removable disk like other memory keys.

This could cut out the need to carry around a Type-A to Type-C cable along with a memory key when you want to move data to your tablet or want to expand capacity on that same device. Who knows who will be the next kid off  the block to offer a peripheral for the USB Type-C connector.

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Microsoft Hardware now offers a Bluetooth keyboard that works with all mobile platforms

Article

Microsoft’s Universal Keyboard has an Android home button, no Windows logo in sight  | Android Authority

From the horse’s mouth

Microsoft Hardware

Universal Mobile Keyboard Product Page

Press Release

Video clip

My Comments

Microsoft Universal Mobile Keyboard press image courtesy of Microsoft

Microsoft Universal Mobile Keyboard

Microsoft have designed a Bluetooth keyboard that is intended for use with smartphones and tablets that run on the three main mobile platforms: Android, iOS and Windows 8. This is to cater for a reality where people may operate different computer devices on different platforms.

Microsoft have achieved a universal layout with platform-specific keys for Android and iOS, like the Command (snowflake) key that the Apple platforms need. The Windows or Android modes could work with devices like games consoles or Smart TVs that implement Bluetooth Human Interface Device Profile in the context of a full keyboard for text entry. What could this mean for using your smart TV’s social-network or content-search functionality without “hunt-and-peck” operation.

But you can select between the different operating systems and keyboard layouts using a three-position hardware switch. As well, the keyboard remembers Bluetooth pairings with 3 devices of the different platforms.There is even a rest for your tablet or smartphone so you can see what you are typing and this works as a lid for the keyboard.

Of course, it can run from its own battery for 6 months but can allow you to quickly charge the keyboard to gain 8 hours extra runtime.

But most of us who use keyboards with tablets typically head for those keyboards that are integrated in a case for the tablet and Microsoft could do better to offer this as a case for most 10” tablets.

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Product Review–Sony SBH-52 Bluetooth Headphone Adaptor

Introduction

I had decided to upgrade my Bluetooth headphone adaptor which was the Nokia BH-111 to the Sony SBH-52 Bluetooth Headphone adaptor, with a view to head towards some newer capabilities that these devices have. This is also to benefit from various improvements like multipoint operation, aptX audio codec for high-quality music and HD Voice codecs for improved mobile telephony services.

Sony SBH-52 Bluetooth headphone adaptor with headphones

Price

RRP: AUD$159.95

Specifications

Connections
Headphones 3.5mm stereo headphone jack
Power MicroUSB charging socket
Sources
Bluetooth audio Bluetooth A2DP with aptX
Analog Radio FM
Communications
Handsfree Bluetooth HandsFree Profile to integrated speaker and microphone
Multi-Device Yes – two devices
Pairing One-button pairing,
NFC “touch-to-pair”
Bluetooth
Standard 3.0
Profiles Hands-Free Profile 1.6
A2DP Audio Profile 1.2
AVRCP Audio Control Profile 1.4

 

The Bluetooth adaptor itself

The Sony SBH-52 Bluetooth headphone adaptor comes with a pair of in-ear earphones but can be used with any headphones that you wish such as your good Bose, B&O, Sennheiser or Skullcandy “cans” or a set of noise-cancelling headphones for that flight or train trip. It also works as a Bluetooth handset or speakerphone which would come in handy with a computer that is running a softphone application.

Sony SBH-52 Bluetooth headphone adaptor NFC tie clip

Touch your NFC-capable phone on the clip to pair it with the headphone adaptor

For setup, you can pair up an Android or Windows device with the Sony headphone adaptor using NFC “touch-and-go” pairing by touching the device to the headphone adaptor’s tie clip. But you would have to hold down the POWER button at the end to make it discoverable if you were to pair it with a device that doesn’t support this kind of pairing like all of the Apple devices.

It presents itself to the host device as a Bluetooth Hands Free Profile device and a Bluetooth A2DP audio device with support for aptX high-quality sound for music and HD Voice codecs for communications. It also works to the AVRCP 1.4 device-control standard with the ability to show the title and artist of the currently-playing song when used with a device that supports this level of functionality.

You can even pair this Bluetooth headphone adaptor with two devices and set them up in “Multipoint” mode so you can run them at once. For example, you could pair with two smartphones such as your work phone and your personal phone and answer calls on either of them using its handset button. Similarly, you could pair it with you desktop or laptop computer running a “virtual-extension” softphone app or a Bluetooth-enabled desk phone alongside a smartphone and manage calls from both these devices.

The SBH-52 as an FM RDS radio

The SBH-52 as an FM RDS radio

As well, the device serves as an RDS-equipped FM stereo radio but you will need to use it with your headphones because the headphone cable serves as its FM aerial.

But the Sony SBH-52 shows its real capabilities when you use it with your Android smartphone because of a Sony “Smart Connect” app, something I see as Sony’s “love-letter” to the open-frame Android mobile-device platform. This works as a “go-between” for messaging, Facebook, GMail and some other services through the use of downloadable “extensions” that you pick up from Google Play. It also becomes a watch showing the current time when you have it switched on and connected with the Android smartphone running this app.

Operational Experience

The Sony SBH-52 as a digital clock for your Android phone.

The Sony SBH-52 as a digital clock for your Android phone.

I have found that the Sony SBH-52 Bluetooth headphone adaptor clips to your shirt or tie without any issues whereas the older Nokia BH-111 had difficulties with clipping to thicker materials present in winter clothing or premium ties. This is due to the use of a clip that works in a similar manner to the old clothes-peg or the clip on an old-fashioned clipboard.

One issue that I have noticed at times is for the Sony SBH-52 to lose its connection with the phone if there is a period of inactivity. It can also manifest in the form of the on-screen data being out-of-sync with what is playing or whether the music is playing at all. This can be rectified by you powering the Bluetooth adaptor off and on or pairing again with the host device and may be a problem with the particular Android Bluetooth software in the Samsung smartphone.

The call-log function wasn’t all that consistent – it was able to show the caller’s name or number for whoever rang in or whoever I rang, but I couldn’t ring that caller back from the Bluetooth audio adaptor. Here, I would see the option to call back on the screen, with the “Yes” or “No” options, but couldn’t action these options using the Play/Pause key. This may be an issue if you haven’t set a particular call handler to be your default call handler on your Android phone.

A problem that can also happen with this headset and other Bluetooth headsets or hands-free devices is if you run a VoIP client like Viber or Skype on your Android phone, you can’t answer the VoIP client’s calls using the headset’s call-control button. This can be awkward in those situations where hands-free operation is desireable or paramount such as driving, walking or cycling. It is something I had found to my chagrin that I couldn’t answer an incoming Viber call using the SBH-52’s call button and had to use the Viber user interface on my Samsung phone to take that call.

The sound from your phone’s media player comes across as good as what the phone and headphones allow. Of course, you may notice a sense of clarity in the sound that it yields.This occurs with both the Bluetooth music and phone calls along with the radio. Of course, it will exhibit the limitations of the FM band which are similar to what is expected of Walkman-style FM radios, such as inconsistent FM reception in hilly or forest areas or city-centre areas with many tall buildings. But it was able to stay locked on to whatever I tuned it to without drifting.

The SBH-52 headset works properly with my Windows 8 computer, even providing elementary AVRCP-level control of media players using its media-control buttons. As well, when used in the Multipoint mode, each of the two devices is treated as a “source” in context with music and audio-content playback.

As for battery runtime, I was able to obtain one and a half days of music-streaming with a few phone calls out of this device before it needed to be recharged. As well, it was able to come from being empty to a full charge overnight once hooked up to an ordinary USB charger. Here, I could use any old microUSB-USB charge/data cable to connect the SBH-52 to a computer or charger when the time comes to charge it up.

Limitations And Points Of Improvement

The software for the Sony SBH-52 headset adaptor could be worked on better such as to allow the connection between it and a previously-paired Android host device to be properly healed when you switch it on and press the “play/pause” button. It could also make sure that it intercepts all incoming-call events from other Android VoIP apps so you can take calls on the headset.

The FM radio leaves a lot to be desired when it comes to functionality. One important function that is sorely missing is the ability to have preset stations. Similarly, the RDS aspect could be improved on, such as to have the PS station-identifier information shown in lieu of the frequency like what happens with automotive implementations. Even implementing the AF “follow-me” functionality that is used in Europe to automatically tune between different transmitters for a network station could earn its keep with travellers who use this while travelling across a country or region.

Sony could sell a variant of these headphone adaptors which is equipped with a DAB+ radio tuner for Europe, Australia and other countries where DAB or DAB+ digital-radio service is operational. It is more important with those markets like Australia where the AM radio stations which carry information-based radio content also appear on DAB+ digital radio while also underscoring DAB+ digital radio’s robustness for portable use.

Sony could extend their Bluetooth headset adaptors’ functionality by providing native support for the Bluetooth MAP messaging profile so that all text and other messages that come in show up on the adaptor’s display. As well, they could implement the full Bluetooth Handsfree profile with its call-control features in the headset adaptor natively without the need to run extra software. This means support for call-log abilities and access to platform-based “voice-assist” functionality irrespective of the phone’s platform. Some functions like a “call-log” ability could also require implementation of the Phone Book Access Profile.

Conclusion

I see that the Sony SBH-52 Bluetooth headset adaptor can work effectively as a Bluetooth headset adaptor when you have a smartphone that is your music player or run a separate Bluetooth-capable music-player device such as a tablet alongside your smartphone. It is also worth its salt if you also value having access to FM radio as another content source while on the go.

As well, Sony is stepping in the right direction by offering Bluetooth headset adaptors like this one that suit the needs of current smartphones and mobile telephony services.

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Should you worry about your USB charger’s current output for your gadgets?

Article

Pay Attention To Charger Amperage To Juice Up Your Gadgets Quickly | Lifehacker

My Comments

AC USB charger

You shouldn’t have to worry about the current output from your USB mobile-device chargers anymore.

Most AC and car-powered USB chargers and USB external battery packs are being available at different current-output levels, typically 500mA, 1A or 2.1A . In most cases, if a charger comes with a particular device, it typically comes with one that is rated to the device’s needs such as a tablet coming with a 2.1A charger.

Connecting a device to a more powerful charger will typically speed up its charging time whereas a less-powerful charger will cause the device to take longer to charge. The classic example is one connecting a smartphone to a high-power 2.1 amp charger that comes with a tablet or an additional 2.1 amp 2-USB charger and finding that this device charges up more quickly than with the charger that comes with the smartphone.

But this kind of connection used to affect older devices which had batteries that couldn’t accept higher charge currents without adverse effects. The recently-designed batteries and device-side charging circuits are now designed to handle higher currents and permit quicker charging. With external battery packs, the amount of power drawn by a device can affect the number of times you can charge the device’s own battery off that pack or the run-time available for your device with that pack if you are using the pack to extend your device’s run-time.

It is also worth noting that if a charger has the standard USB Type-A socket on it, you can use a USB charge/data cable that has the device’s connection (microUSB, Apple legacy 30-pin Dock or Apple Lightning) on it so you don’t need to have chargers for different device types. An increasing number of 2.1A chargers are equipped with two or more USB sockets mainly to allow you to charge two devices at once and the current budget that these chargers put up is shared amongst the devices connected to it. This would typically allow for two smartphones to be charged at a normal rate.

So you can really get by with using higher-powered chargers to charge up your gadgets quickly especially as today’s models are more tolerant of the higher current. Similarly, the use of the 2-USB 2.1A chargers can go a long way with saving on power outlets for charging multiple smartphones.

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