SFX ripping/decoding/dumping features?

[iteachvader]

(03-15-2015, 04:17 AM)jimbo1qaz Wrote: The decompression coefficients are loaded from the data file at 302C[0:32].
The actual data is located at 26bc8.
ADPCM requires the "history", the prior 2 samples. Both are 0x0013.
The input begins with coeff 0, and data 0.
That results in a continued stream of 0x0013 output.

Quote:    # IMPORTANT DATA STARTS HERE
   
   # The following data describes the rising siren-like sound effect.
   # I have located the data required to decode it.

   # coeffs[16], prev out, prev out 2, which coeff, memory location, memory value
   # (3618, -1577, 84, 1943, 0, 0, 0, 0, 0, 0, 1771, 245, 0, 0, 0, 0), 19, 19, 0, 161826, 0
   
   # Samples are loaded from 26bc8
   # Coefficients are loaded from 302C[0:32]
   # History 0x0013 not sure where.
   # Prev xy = 0
   # Scale 0, coeffs 0
   # ((0x400 + itertools.product(prev, factors)) >> 11) + (raw_value << exp)

I've no idea how that works, or if I'd be able to get sound effects from RSII using this, but thanks anyway...