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ADK simplifies wireless audio streaming design

Posted: 16 Nov 2012     Print Version  Bookmark and Share

Keywords:wireless  audio  streaming 

GainSpan Corp. launches the Audio Application Development Kit (ADK), a reference design that makes it easy for developers to integrate audio streaming services into wireless audio products based on the GainSpan Wi-Fi modules.

These products include remote speakers and microphones, walkie-talkies and baby monitors. The streaming could involve mp3 audio files or real-time voice between a Wi-Fi enabled device and an iOS based smartphone.

The Audio ADK integrates an audio application board with the hardware design package and the software suite including reference source code for the GainSpan audio embedded firmware as well as Apple iOS based mobile apps.

The audio application board features the GainSpan Wi-Fi module that communicates with an audio codec chip over the SPI bus, a microphone, an amplifier to drive external speakers, and a walkie-talkie button. The board has line-in ports to connect to external audio sources and line-out for connecting to external speakers/headphones, WPS button for easy setup of the wireless network, serial flash for storage of custom web pages and/or backup firmware and status and mode indicator LEDs.

The GainSpan embedded software provided to run on the Wi-Fi module offers complete Wi-Fi functionality including the entire networking stack and services, wireless security and provisioning software. In addition, it supports mDNS/DNS-SD based device and service discovery that allows users to automatically discover and connect to the embedded audio profile.

The Audio ADK can be used with the GainSpan GS1500M, a leading-edge 802.11b/g/n solution, or the GS1011M, an ultra-low power 802.11b solution which is ideal for battery operated devices, according to the company.

An Audio Application Evaluation Kit (AEK) is also available that provides a binary version of the software, and can be used to demonstrate a variety of application use cases: streaming music from smartphones to a remote speaker or headphones, streaming live audio data from a wireless enabled device to a smartphone, or using walkie-talkie mode for two-way audio communication.

The Audio ADK is priced at Rs.1.59 lakh ($3,000) and is available immediately. The evaluation version of the kit is available for Rs.13,227.51 ($250).





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