Orlando Enrique Fiol <
[email protected]> wrote:
In article <[email protected]>,
Adobe released a demo (https://podcast.adobe.com/enhance)of an
AI-based audio enhancement routine for voice. You can try it at the link >>above. I recently recorded a chamber music concert at a local church.
One of the performers spoke for a minute about a piece they were about
to play. The recording has quite a bit of reverberation and random
noises. The result from Adobe is surprisingly good, 'tho my wife
commented that the process altered the timbre of the narrator's voice,
but not in a way that someone who didn't know her would notice.
What actually constitutes timbral alteration knowledge?
For voice that's a hard problem because the voice consists of a bunch of fundamentals, plus partials, plus sidebands. Any chance in pitch to
any of them, or any change in their levels, would cause a timbral
change. Would it be audible? Maybe, depending. I can drop a deep notch
into a vocal track at one frequency, and you wouldn't notice it, and I
can drop it somewhere else and it would be obvious.
Back in the seventies, Stockham took digital notch filters to a Caruso recording, with the intention of notching out all of the horn resonances
that were part of the recording process. But the end result didn't sound
like Caruso... much of the depth of his voice was gone. Was this because natural vocal resonances were getting notched out? Or was it because
Caruso's voice wasn't really as complex and thick and people remembered it
as being? Folks have been arguing over that one for decades.
--scott
--
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