Ravi Kondapalli || Mus 422 || Winter 2011 || Project Proposal
Joint Stereo based Perceptual Audio Coder
Motivation:
After looking at various options, including Block Switching, I decided to pursue Joint Stereo as my final project. My initial comprehension of various improvements that could be made to the basic coder (Block Switching, Huffman Coding etc.,) was highest for Joint Stereo. I found the principle behind Joint Stereo/M-S Stereo Coding simple and am looking forward to working on it.
The aim of this project is to achieve better data rates with this coder while maintaining a decent quality for the audio.
Market Concerns:
In order to update the market with the new coder and make sure at the same time that the logistics concerning the update are not problematic, we need to make sure that the new coder is also backward compatible with the current decoder software and existing equipment. In situations where this is not possible, a new decoder needs to be used to playback audio encoded with this encoder. The tradeoff one can expect is near-perfect reconstruction of data achieved with M/S Stereo Coding and thus clarity of data.
Business Plan:
Business Plan: There is an increasing amount of Pop Music in the world these days. A major amount of the music contains identical data on both channels. Also, HD video transmission is having higher demands in audio clarity. To address these issues, a new encoder that implements Joint Stereo needs to be used. The encoder needs to be bought by recording companies and music streaming service companies. The decoder is distributed freely. Since the format is backward compatible with the existing encoder, the new coder is easily marketable.
Current Status
Currently coding. The final project page should be up by the 18th of March, 2011. That would include code snippets, a presentation, paper and audio samples.