1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
import soundfile as sf
import soxr
TARGET_RATE = 16000
CHUNK_SIZE = 96000
# Open input audio file
in_file = sf.SoundFile('very_long.flac', 'r')
source_rate = in_file.samplerate
channels = in_file.channels
# Config ResampleStream
resampler = soxr.ResampleStream(source_rate, TARGET_RATE, channels, dtype='float32')
# Open output audio file
with sf.SoundFile('output.flac', 'w', TARGET_RATE, channels) as out_file:
while True:
# Read chunk of audio
x = in_file.read(CHUNK_SIZE, dtype='float32')
is_last = (in_file.tell() == in_file.frames)
# Resample the chunk
y = resampler.resample_chunk(x, last=is_last)
# Write to output file
out_file.write(y)
if is_last:
break
in_file.close()
|
