Mit Python:
import wave import sys import audioop import binascii # Get the fragments of ADPCM data: # Here, blocks is an array of 259byte data represented as strings which is parsed # from the ADPCM data file, write this according to the structure of your ADPCM file block = getAdpcmFragments(adpcm_file_path) #Set parameters for the wavefile according to your audio stream wave_file = wave.open(wave_file_path, 'wb') wave_file.setparams((2,2,16000, 0, 'NONE', 'NONE')) # Using ASCII to Binary from the binascii lib to convert strings represented as e.g # 4A, 6F etc into actual binary values. Then I am writing the linear PCM data from # adpcm2lin to the wav-file. state = None for this in block: pcm, state = audioop.adpcm2lin(binascii.a2b_hex(this), 4, state) wave_file.writeframes(pcm)