Ten Principles for Good Design

Ten Principles for Good Design 

Profile of Tradetional Bluetooth Technology -- Bluetooth Version 2.1 plus EDR

Profile of Tradetional Bluetooth Technology -- Bluetooth Version 2.1 plus EDR 

Bluetooth inventor is Ericsson company of Sweden, and it already started to develop Bluetooth technology as early as 1994. In February 1998, a Special Interest Group had been established jointly by Ericsson, Nokia, IBM, Toshiba and Intel5 a multinational company for a global short-range wireless communications technologies, it calls Bluetooth.
 
Up to now, Bluetooth technology had been developed V1.1/1.2/2.0/2.1/3.0/4.0 six editions totally. Hereinto, the, version 1.1/1.2 is earlier technology, and they had been phased out basically. While version 2.1 is used widely, transmission rate of Bluetooth 2.1 version can be achieved the 2M bit per sec or more, and devices which adopt 2.1 version can transmit data and voice simultaneously.
 
Bluetooth version 3.0 and 4.0 is an improved version, whose function of transmission speed and distance is substantial increased, especially High Speed technology of Bluetooth version 3.0 and Bluetooth Low Energy of Bluetooth version 4.0 after they hit market.
 
Theoretically, the fastest transmission of Bluetooth technology is reached 24Mbps, but currently it’s transmission rate wasn’t more than 1Mbps under Bluetooth version 2.1 application without EDR technology supporting. In order to achieve large data stream, the introduction of EDR (Enhanced data rate, the enhanced rate of the Bluetooth technology abbreviation) have been introduced, it improves the data transmission rate of the Bluetooth technology to reach 2.1Mbps.
 
In addition to get availability a more stable audio stream transmission and lower power consumption, it also make full use of the bandwidth advantage connect multiple Bluetooth devices at the same time, let Bluetooth devices get satisfactory transmission rate.（More infromation about Bluetooth audio products, please visit http://www.wistao.com/en/index.html) .

What Could Wireless Bluetooth Speaker Taken? --- Wireless Convenience of A Wonderful Experiences!

What Could Bluetooth Wireless Speaker Taken? --- Wireless Convenience of A Wonderful Experiences!

Era of smart mobile terminals is coming, they have become more and more popular and fashion product, such as IPHONE, IPAD and many Android smart phone and tablet computer and gradually Bluetooth system has also become a standard configuration of the mobile terminal. Those mobile terminal device achieve a trend to integrate a great music, video, games and other application functionality, and even mobile phones and other portable digital products could not been taken away from our daily lives. For example, online map, microblogger, e-mail, instant messaging is a typical example. From begining in 2011, main manufacturers of speaker have begun to enter the market segments of Bluetooth wireless speaker. Shenzhen Wistao Technology (http://www.wistao.com) had developed different series of Bluetooth speaker through market research to grasp trend of Bluetooth product development.

For such handheld portable devices of smart phone or tablet, wired speaker is clearly inappropriate due to highly mobile, but it will be more comfortable to use Bluetooth wireless speaker.

With Bluetooth wireless speakers, what can we do indeed? Take a look, and share it!

A.   When you get together with friends, or are picnic on the country side, or take leisure time and do exercise, you can use your phone to play the music, but it will reduce acoustics of music greatly. However, Bluetooth speakers, you can enjoy the beautiful, first-class sound quality of music without cable connection, also you do not have to worry about the battery problem.

B.   Share network radio like as BBC music, CNN radio, WIN7 Internet radio, etc. Together better than alone, when we would like to share our collection of music at the party, you will first think of the speakers, Bluetooth speakers must be the best choice at this time, almost without limit by distance indoors . In this way, you can not endure the bad phone or laptop sound.

C.   High quality of game experiences for all games almost. At beginning, games of mobile phone just to design to kill time only, but today's mobile games have been very strong functions with hardware to enhance the level. Not only from visual effects and sound but also game-playing do reach a very high level. And like as Gameloft and Popcap companies, They had been released a large number of outstanding game for smart phones or tablets. In addition, such as the music game as DJMax, it also will demand a higher sound output.

D.   Suitable for mobile television demand (Thunder, You Tube, Sina video, etc.). Online movies and TV series has also become one of the important functions of the portable devices, because of online video software easy to use, many people return home and use iPad or smart phone to watch video instead of computer. This operation has two advantages, one is to simplify operation between speaker and amplifier, another advantage is that you can curl up on the couch or lie in bed or sit at desk. Using mart phone or tablets is certainly much more convenient than computer, this arbitrariness is obviously not suitable for wired speakers.

E.   Hands-free answering the phone. Avoid prolonged to answer phone calling, and the impact of the hearing, while reducing smart phone radiation. Also, liberate your hands while call is coming.

F.    May be used to hold a conference call. The clear call feature can be used to hold a conference call.

CSR APT-X Audio Professional Coding and Decoding Technology

CSR APT-X Audio Professional Coding and Decoding Technology

CSR aptX audio coding technology replaces the standard audio codec Bluetooth employs for streaming stereo audio wirelessly from audio devices to headphones and speakers, delivering improved, high-fidelity sound comparable to the CD quality consumers have come to expect from their home entertainment systems. 

Already installed in a fast-growing ecosystem of top-notch Bluetooth headphones, hot speaker docks, and Bluetooth adapters for in-car and home-based audio systems, aptX® audio coding technology super-charges the fidelity of stereo audio when streamed over a Bluetooth wireless connection. So next time you use aptX® enabled Bluetooth headphones to enjoy the plaintive voice of Stevie Nicks streaming from your new Android powered like as Samsung smart phone or IPhone5, listen up to the positive difference aptX makes.

Although standard Bluetooth technology offers the ability to stream stereo audio wirelessly from audio devices to headphones and speakers, this bandwidth-constrained solution does not come close to the audio quality consumers have come to expect from their electronic entertainment systems. CSR aptX audio coding technology solves this problem, breaking the bandwidth barrier to deliver CD-quality stereo audio wirelessly over Bluetooth connections for a variety of consumer electronics applications. As a result, aptX is becoming a preferred choice for premium quality Bluetooth audio, having been deployed in a fast growing list of products by companies including Samsung®, Nokia®, HTC®, Motorola®, Creative®, Sennheiser® and many more.

CSR's world renowned aptX® audio compression solutions retain the full integrity of original digital audio and are optimized for instant real-time audio streaming. The suite of algorithms has earned a reputation for some of the highest audio quality, extremely low latency and strong resilience to bit errors, and has been proven in wireless, broadcast and professional live performance applications. (More Bluetooth audio information, please visit Wistao Technology Website http://www.wistao.com/en/index.html).

Product	Description
aptX® Lossless	The aptX® Lossless audio codec is developed for HD-Audio in professional and consumer applications.
aptX® Enhanced	The aptX® audio codec offers broadcasters a unique feature set delivering audio quality indistinguishable from linear at much reduced bit rates.
aptX®	By incorporating aptX® audio coding technology into the next generation of Bluetooth® stereo products, developers can offer consumers audio quality indistinguishable from wired with an impressive dynamic range.
aptX Live®	With virtually no delay, a strong, robust connection, and providing excellent channel density, aptX Live® enables real-time digital wireless audio in bandwidth constrained environments.

We provide you Bluetooth Module baced on Bluetooth 4.0 and apt-x technology.If you want to upgrade your audio system or DIY, you may click below:  

CSR8645 ROM Bluetooth Module Bluetooth 4.0 Mulitport Output Support APT-X Decoding DIY RoHS Compliance High Quality,

The module had been soldered on PCB, you just need connect output to your amplifier, and connect power wire for DC 5V, then you can enjoy wireless Bluetooth music from iPhone, iPad or other mobile smart terminals 

CSR8645 Bluetooth Module 

Pins of CSR8645 Bluetooth Module