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- Path: sparky!uunet!paladin.american.edu!darwin.sura.net!news.larc.nasa.gov!grissom.larc.nasa.gov!kludge
- From: kludge@grissom.larc.nasa.gov (Scott Dorsey)
- Newsgroups: sci.electronics
- Subject: Re: voice-suppression circuits,karaoke
- Date: 24 Dec 1992 13:49:21 GMT
- Organization: NASA Langley Research Center and Reptile Farm
- Lines: 28
- Message-ID: <1hcf51INN93l@rave.larc.nasa.gov>
- References: <1ha200INNls8@hp-col.col.hp.com> <LyB0VB2w164w@q106fm.uucp>
- NNTP-Posting-Host: grissom.larc.nasa.gov
-
- In article <LyB0VB2w164w@q106fm.uucp> pete@q106fm.uucp (pete cervasio) writes:
- >cab@col.hp.com (Chris Best) writes:
- >
- >>
- >> I can't help you find the company, but here's how they work
- >> (as it was explained to me): any signal common to both
- >> channels is removed, and signals that are different are
- >> left in. So I guess the song has to be stereo.
- >>
- >> Since vocals are typically centered in the image, that's
- >> what gets cut out. Don't know what else does, though.
- >
- >A _LOT_ of the bass disappears, since it's usually recorded center
- >channel, too. You need drastic equalization to get some of it back.
- >There is a problem if there is stereo reverb on the vocals, too... it
- >doesn't disappear!
-
- Most of the commercial units remove everything common to both channels
- above 250 Hz or so. This eliminates most of the vocal while leaving most
- of the bass. However if you have anything else mixed to the center
- position, it will go away as well, of course (like a lead guitar).
-
- Stereo reverb on the vocals will stick around. Vocals that were recorded
- originally in stereo (like they really ought to be, but seldom are) will
- stick around. Anything miked with a minimalist configuration (very little
- rock stuff, but some jazz and a lot of classical) won't work at all.
- --scott
-
-