another audio question, was: Re: adding silence to audio files, notx Debian Questions

[Janina Sajka]

If your file is stereo and the device being demonstrated isn't panned
exactly the same as the voice, you might have success using the karaoke
feature in ecasound. I've had some good success with it, in any case, so
recommend giving it a try.

Janina

Gregory Nowak writes:
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> Hi Chuck and all.
> 
> Since we're on the topic of processing audio, I have a question of my
> own. Let's say, for example, that I have a file of someone
> demonstrating something, and this person talking is in the foreground,
> and slightly in the background is the sound of the device being
> demonstrated. What I was wondering is if it is possible to muffle the
> speech in the foreground, or get rid of it altogether, and bring the
> background sound into the foreground, making it the dominant sound, or
> making it the only sound being heard? 
> 
> I imagine what I want to do could be done, in whole, or in part, by
> applying frequency filters. However, I'm also not a sound geek, so
> don't know how I'd figure out the frequencies I need to filter, though
> from reading the sox man page, I think I do understand how to apply
> the high-pass/low-pass filters once I know what frequency ranges to
> filter out, and which filter to apply, high or low. Thanks.
> 
> Greg
> 
> 
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Janina Sajka,	Phone:	+1.202.595.7777;	sip:janina at a11y.org
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