On 06/03/2014, Charles Z Henry <czhe...@gmail.com> wrote: >> 1) Steep filter to isolate speech (100-4k?). >> > > Not a great idea over all. You might just mangle the audio a bit more. It > loses some temporal qualities when filtered too much. Listening to speech > relies a lot on temporal cues that you want to keep intact.
I think probably he meant a multiband processor, using crossover filters to isolate and process the important region (100-4k), and then combine that with the rest of the (unprocessed) spectrum. At least that's how I imagined it. Losing the high frequency formants above 4k would decrease intelligibility a lot. - Peter -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
