Subject: Re: [stella] Table of Note Values? From: Nick S Bensema <nickb@xxxxxxxxxxxx> Date: Sat, 8 Mar 1997 17:03:43 -0700 (MST) |
>Here are my preliminary results.... The tuner can't really read very high >frequencies, so I can only give the basic pitch. This is a quickie table >that may not be perfect because tuners sometimes pick up harmonics rather >than the fundementals, but it's fairly accurate. This is only for >distortions 4 and 1. 1 is for lower tones, and 4 extends into the higher >ones. These two tables alone should be enough to form the foundation of >some music demos. We'll see. We'll have to take this information and >build sub-tables that contain only well-tempered intervals. I think >variation +/-5 cents will result in music that is fairly in-tune. Maybe >one or two notes in the scale that are up to 10 cents out of tune are >okay. If you limit it to notes that are all in perfect tune in relation >to eachother, you may have slim pickins in the notes. That table looks great.... several possibilities for tables can be made. Some notes in a scale (fifth, fourth) should be given less slack than the others, but all else should go along smoothly., The chart proved a theory of mine, that the pitch value really DOES divide by N (N+1 actually, since your notes for 1 and 3 (N=2 and N=4) gave the same note, and as you noticed it seemed to be a perfect octave below. 7, 15 and 31 also gave the same note (B). Likewise, E could be could at 2, 5, 11 and 23 (N=3, 6, 12, and 24). This means that for a cool octave-divider effect, you can do this: LDA Pitch STA AUDF0 ASL ;multiply by 2 STA AUDF1 Well, of course it would be cool to make it give a slight delay, but you know what I mean. And a chorus effect could be achieved by putting the same frequency into two voices with different distortions; the two notes produced would always have the same interval to each other. In any case, this will be of some help to me. -- To unsubscribe, send the word UNSUBSCRIBE in the body of a message to stella-request@xxxxxxxxxxx
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