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Old 20th November 2006, 11:09 PM   #11
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Thanks, JCX!

That should work well for my purposes.

I hadn't thought of using LTSpice to generate sine waves.

Does 32768 have some connection with pi? That's the only thing that I don't understand.

Originally posted by me
I would think that the optimal type of sound format would take samples depending on the skew rate (if this is the correct term) of the piece of a wave, so that all samples would be equal distance away from each other if viewed by Audacity. This would produce the same number of samples for each frequency, and even out the quality of the sound. It could be hard to code and play, though.
Skew rate... I funny!
Actually, it's slew rate - am I right?

hehe... Anyways what do you guys think of that idea? I might try it (unless, of course, it's already been done).

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Old 21st November 2006, 12:30 AM   #12
jcx is online now jcx  United States
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32768 = 2^15

16 bit PCM lsb size in LtSpice is 1/32768 V since +/-1 V is the full scale range in Volts

for 24 bit PCM 1 lsb = 1/8388608 = ( 1/2^23 )

I'm pretty sure my dither needs to be 2 lsb instead of 1, maybe I'll look at a IMD plot

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