18 lines
295 B
Markdown
18 lines
295 B
Markdown
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Frequency table
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==============
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calculation like:
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```
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rate = 8000000 / (3 * 64)
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offset = 50
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print "const uint16_t freq_table[] = {"
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for i in range(100):
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n = int(440.0 / rate * 2 ** ((i - offset) / 12.0) * 2 ** 16 + 0.5)
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if n < 0x10000 / 2:
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print "/*0x%02x*/\t%d," % (i, n)
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print "};"
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```
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