PeterLPLabs
commented
2 weeks ago This likely no longer works because of changes in Python 3. I've written a version that works with Python 3.x:
`#this code unpacks and repacks data from:
16 bit stereo wav file at 44100hz sampling rate
to:
a txt file with mono channel of offsets from the center of a record groove
import wave import math import struct
fileName = "test.wav" #file to be imported (change this) print("Converting " + fileName)
read file and get data
w = wave.open(fileName, 'rb')#updated to bytes in python3
samplewidth = w.getsampwidth() print("Sample width in bytes: " + str(samplewidth))
framerate = w.getframerate() print ("Frame rate / sampling frequency (target: 44100): " + str(framerate))
numframes = w.getnframes() print ("Total number of frames in .WAV file: " + str(numframes))
numchannels = w.getnchannels() print ("Channels (1-mono, 2-stereo): " + str(numchannels)) offset = numchannels * samplewidth #how many bytes to skip to separate the channels
print("Progress")
read the audio frames from the wave file
frame = w.readframes(numframes) framelist = list(frame) print (".")
initialize lists of each byte. Hardcoding for mono or stereo. future release, use array for channels
monochannelbytes1 = framelist[:numframes:offset] #first of two-byte pair per channel monochannelbytes2 = framelist[1:numframes:offset] #second of two-byte pair per channel print (".")
shift second byte to the left by eight binary digits, so we can create a 16-bit number
byte2shift = [i*2**8 for i in monochannelbytes2] print (".")
add the channel bytes for a list of 16-bit sums
combinedmonochannel = [x + y for x, y in zip(monochannelbytes1,byte2shift)] print (".")
calculate the values of the groove as diplacement from center (0) of groove, from -32768 to 32768 (2^15)
audiotext = [x - 216 if x > 215 else 0 if x == 2**15 else x for x in combinedmonochannel] print (".")
import csv #python library for creating csv files from python data types
write audiotext to txt file
textfilename = fileName[:-3] + "txt" #replace wav with txt with open(textfilename, 'w') as f:
Create a CSV writer object that will write to the file 'f'
textfile = csv.writer(f)
# Write data to the CSV file
textfile.writerow(audiotext)f.close() print ("---------") print ("wav2txt complete for " + textfilename)`
I understand this is quite an old repo, but I don't seem to be able to convert the .wav to a text file. the command line pops up and then disappeard but I'm not getting any confirmation or error showing. And no .txt file is appearing.