Sound create use FM synthesis use C program. Use 0.3*expf( -time ) envelop.
Algorithm 2 of YM2515 chip (not use chip, only follow its algorithm in C program)
• no feed back
• use two oscillator group (same ampl, different freq):
GROUP 1
• ampl_m1 = 0.638*8.0
• ampl_m2 = 1.000*8.0
• ampl_c1 = 0.220*8.0
• ampl_c2 = 0.704*8.0
• freq_m1 = 929.040 * 1.5 Hz
• freq_m2 = 232.575 * 1.5 Hz
• freq_c1 = 1860.603 * 1.5 Hz
• freq_c2 = 929.040 * 1.5 Hz
GROUP 2
• ampl_m1 = 0.638*8.0
• ampl_m2 = 1.000*8.0
• ampl_c1 = 0.220*8.0
• ampl_c2 = 0.704*8.0
• freq_m1 = 737.344 * 1.5 Hz
• freq_m2 = 184.609 * 1.5 Hz
• freq_c1 = 1476.875 * 1.5 Hz
• freq_c2 = 737.344 * 1.5 Hz
Type
Wave (.wav)
Duration
0:08.000
File size
2.9 MB
Sample rate
48000.0 Hz
Bit depth
32 bit
Channels
Stereo
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