MP3 Transcription

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Bit Rate
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http://www.commandlinefu.com/commands/view/8556/batch-convert-mp3-bitrate-to-128kbps

http://theiszm.wordpress.com/2010/11/08/convert-your-mp3-bitrates-via-terminal/

http://www.freerip.com/

http://audacity.sourceforge.net/

Open Source Softwares
…………………

http://www.speechapi.com/demos/

http://nexiwave.com/

http://www.voxforge.org/home/read

http://www.speechapi.com/opensource/

http://www.ispeech.org/