Graduate Profiles 2012 - National University of Science and ...
Graduate Profiles 2012 - National University of Science and ...
Graduate Profiles 2012 - National University of Science and ...
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BLUE AUDIOThe current system used for wireless audio transfer through microphones is radiotransmission. It has very poor audio quality. Another drawback is the glitches duringtransmission which can seriously affect the quality <strong>of</strong> audio. Security is another issuewith the conventional radio transmission systems, the data (audio) being transmittedcan easily be sniffed once the frequency is known.Bluetooth addresses these problems in a much better way. The specialized pr<strong>of</strong>ilesensure error free <strong>and</strong> high quality <strong>of</strong> audio transmission. Other mechanisms likefrequency hopping make sure that security is not compromised. These advantages giveit an edge over radio infrared systems which are more commonly employed for audiotransmission.The aim <strong>of</strong> our project is transmission <strong>of</strong> high quality stereo audio usingBluetooth technology. This will be accomplished by digitizing the analog audio signalfrom an audio source <strong>and</strong> then interfacing it with a suitable Bluetooth module.For this purpose we have designed a prototype transceiver pair capable <strong>of</strong> wirelesstransmission <strong>of</strong> audio in real time with any supported Bluetooth device. It involvesconversion <strong>of</strong> audio signals to Bluetooth, Bluetooth transmission <strong>and</strong> reception at theother end, <strong>and</strong> conversion back from Bluetooth to audio at amplifier side. Automatich<strong>and</strong>shaking <strong>and</strong> connectivity is also addressed in our project.The Finished product <strong>of</strong> our project is a h<strong>and</strong>held device capable <strong>of</strong> pairing with diverseBluetooth devices. User has the option to select, on the go, any pr<strong>of</strong>ile from a multitude<strong>of</strong> pr<strong>of</strong>iles depending upon the type <strong>of</strong> information/data to be communicated betweenthe Bluetooth devices. The pr<strong>of</strong>iles supported by our module are Advanced audiodistribution pr<strong>of</strong>ile (A2DP), Generic Access Pr<strong>of</strong>ile (GAP), Serial Port Pr<strong>of</strong>ile (SPP).Using these pr<strong>of</strong>iles we can transfer real-time high quality audio, data/messages <strong>and</strong>/orfiles with supported Bluetooth devices.Syndicate Members: Waseem HassanMuhammad AbdullahMuhammad Shaheer NawazHaider Wazir KhanSupervisor:Dr. Asif Masood19
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