Subject: Re: Software for chord identification From: Eric Jacobs <ericj(at)THEAUDIOARCHIVE.COM> Date: Thu, 8 Sep 2005 02:02:44 -0700At least for classical pieces, yes, sheet music (to the extent that A440 was used, or other known historical pitches for A). Of course, as was pointed out earlier, for popular music the pitch may have been changed for vanity purposes, and any sheet music has limited value if any at all. So in these cases, an "ideal chord" is not known. The problem of correctly repitching historical recordings is very common in the audio restoration field. For electric recordings, the presence of an electrical ground hum is very helpful, but for the early acoustic recordings there are no electrically induced noises. Eric ---- Original message ---- >Date: Thu, 8 Sep 2005 10:42:46 +0200 (CEST) >From: Toth Laszlo <tothl(at)inf.u-szeged.hu> >Subject: Re: Software for chord identification >To: Eric Jacobs <ericj(at)THEAUDIOARCHIVE.COM> >Cc: AUDITORY(at)LISTS.MCGILL.CA > >On Wed, 7 Sep 2005, Eric Jacobs wrote: > >> If I know what chord is being played (call this "actual chord") - and I >> do know what chord should be played (call this "ideal chord") - > >What do you mean by knowing the "ideal" chord? Sheet music? > > Laszlo Toth > Hungarian Academy of Sciences * > Research Group on Artificial Intelligence * "Failure only begins > e-mail: tothl(at)inf.u-szeged.hu * when you stop trying" > http://www.inf.u-szeged.hu/~tothl * >