When making a dvd from an avi or other video format file, I would like to be able to adjust the audio to emphasize the voice frequencies and make them easier to understand when the dvd is played back. Is there a single software program which will let me convert to dvd and ajust the audio frequencies at the same time? Lacking that, how would you suggest I proceed to accomplish this result? Many thanks.
Use an audio editor to enhance the audio to your liking. Perhaps Audacity: http://audacity.sourceforge.net/download/ Save the modified audio and use it as input to your DVD making process.