Sound create use FM synthesis use C program. Use expf( -4.0*time ) envelop.
Algorithm 4 of YM2515 chip (not use chip, only follow its algorithm in C program)
• no feedback
• ampl_m1 = 384
• ampl_m2 = 384
• ampl_c1 = 189
• ampl_c2 = 189
• freq_m1 = 1580032*2.0
• freq_m2 = 1584128*2.0
• freq_c1 = 790016*2.0
• freq_c2 = 792064*2.0
Equation for change ampl become 0.0 to 1.0: A = (1/2)^((8*ampl_xx+1)/256)
Equation for change freq become Hz: F = freq_xx*44100/(1024*65536)
Type
Wave (.wav)
Duration
0:02.000
File size
344.6 KB
Sample rate
44100.0 Hz
Bit depth
16 bit
Channels
Stereo
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