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DPCM question Posted: 2011-03-12 23:38

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xolroc

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#14171

What is the formula for the pitch reductions?

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Posted: 2011-03-15 05:27 (Last Edited: 2011-03-15 05:31)

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furrykef

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#14301

[url=http://nesdev.parodius.com/2A03%20technical%20reference.txt]This page has a table in the middle. Here it is (reformatted so that it shows up well and uses decimal instead of hex for pitch numbers):

15: C-8
14: G-7
13: E-7
12: C-7
11: A-6
10: G-6
9: F-6
8: D-6
7: C-6
6: B-5
5: A-5
4: G-5
3: F-5
2: E-5
1: D-5
0: C-5

Of course, if you load a sample that isn't a C, you can transpose this scale to other keys.

(I'm not sure why the table's octaves are numbered from 5 to 8, but that's what it says.)

Posted: 2011-03-19 18:59 (Last Edited: 2011-03-19 19:00)

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Ryukenden

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#14444

It appears, it is unessential to have, for example,Sunsoft bass samples with the fifth on the seventh octaves. It is possible and with the third on the fifth. In this case the instrument as "... .fti" it is kept correctly.

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