Questions about Audio Conversion

Speech Recognition Toolkit

Brought to you by: air, arthchan2003, awb, bhiksha, and 5 others

This project can now be found here.

Questions about Audio Conversion

Forum: Help

Creator: Jensen

Created: 2004-09-24

Updated: 2012-09-22

Jensen - 2004-09-24

Hi,
I have a few questions that i need to ask about audo file conversion for Sphinx3 and Sphinx4. Below is my list of questions in my mind..

How to convert the .wav file to .raw file?

How to convert the .wav file to .mfc file?

How to convert the .raw file to .mfc file?

Is there any recommended tools available to convert these audio files mentioned above?

How to test the .raw and .mfc file if the conversion is correct?

Hope my question can be answered and cleared up my curiousity. Thank you in advance.

Jensen
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
- Paul Lamere - 2004-09-24
  
  Jensen:
  
  To convert .wav files to .raw files you can use 'sox' available from http://www.spies.com/Sox/
  
  In sphinx-4 you can use the FeatureFileDumper class to convert raw audio to features such as MFCCs.
  
  http://cmusphinx.sourceforge.net/sphinx4/javadoc/
  
  In Sphinx-4 you can run recognition against raw audio or against MFCCs by reconfiguring the front-end. You should get equivalent results, if you don't then the conversion is likely to be incorrect.
  
  Paul
  
  If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

Log in to post a comment.