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#!/usr/bin/env python3
import wave
import subprocess
from contextlib import closing
def get_wavfile_length(path):
with closing(wave.open(path)) as reader:
nfr = reader.getnframes()
frate = reader.getframerate()
return nfr / frate
def get_labels(path, pos):
with open(path, "rt") as infh:
labels = [(pos, "silence")]
for spam in infh:
# The labels are a bit odd
start, _, label = spam.strip().split()
labels.append((pos + float(start), label))
return labels
def make_single_track():
labels = []
soxcmd = ["sox"]
with open("fileids", "rt") as infh:
pos = 0.0
for spam in infh:
fileid = spam.strip()
path = fileid + ".wav"
soxcmd.append(path)
nsec = get_wavfile_length(path)
path = fileid + ".lab"
labels.extend(get_labels(path, pos))
pos += nsec
with open("single_track.lab", "wt") as outfh:
start_time, label = labels[0]
for end_time, next_label in labels[1:]:
if next_label != label:
outfh.write("%.3f\t%.3f\t%s\n" % (start_time, end_time, label))
start_time = end_time
label = next_label
outfh.write("%.3f\t%.3f\t%s\n" % (start_time, pos, label))
soxcmd.extend(["-r", "16000", "single_track.raw"])
subprocess.run(soxcmd)
if __name__ == "__main__":
make_single_track()
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