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https://github.com/cookiengineer/audacity
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21 lines
598 B
Plaintext
21 lines
598 B
Plaintext
(PARTIAL-ALG
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(NAME "partial")
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(ARGUMENTS ("rate_type" "sr") ("double" "hz") ("sound_type" "env"))
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(SUPPORT-FUNCTIONS "
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#include \"sine.h\"
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")
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(START (MIN env))
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(STATE ("long" "phase" "0")
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("long" "ph_incr" "round((hz * SINE_TABLE_LEN) * (1 << SINE_TABLE_SHIFT) / sr)"))
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(TERMINATE (MIN env))
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(LOGICAL-STOP (MIN env))
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(INNER-LOOP "output = sine_table[phase >> SINE_TABLE_SHIFT] * env;
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phase += ph_incr;
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phase &= SINE_TABLE_MASK;")
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(MAINTAIN ("phase"
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"susp->phase = (susp->phase + susp->ph_incr * togo) & SINE_TABLE_MASK"))
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(CONSTANT "ph_incr")
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(SAMPLE-RATE "sr")
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)
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