Pydub - How to change frame rate without changing playback speed

Question

I have a couple audio files that I open in Pydub with AudioSegment.

I want to decrease the audio quality from frame rate 22050 to 16000 Hz. (One channel files)

If I simply change the frame rate of AudioSegment, what I get is the exact same wave played in slower speed. Well, fair enough.

But how do I actually change the waves to fit a lower quality, same speed playback?

(Manual interpolation is the only thing I can think of, but I don't want to get into that trouble)

Have you tried AudioSegment().set_frame_rate() ? – Jiaaro May 18 '17 at 03:29 — Jiaaro, May 18 '17 at 03:29
Would you post that as an answer? – Daniel Möller May 18 '17 at 22:35 — Daniel Möller, May 18 '17 at 22:35

score 34 · Accepted Answer · answered May 19 '17 at 03:38

34

You can use:

sound = AudioSegment.from_file(…)
sound = sound.set_frame_rate(16000)

answered May 19 '17 at 03:38

Jiaaro

1

That's much easier than what I was doing: `subprocess.check_output(['sox',filename,'-r','16000',new_filename])` – Marc Maxmeister Apr 28 '22 at 01:32

score 1 · Answer 2 · edited Feb 09 '22 at 00:08

1

Or you can do this instead also:

import librosa

y, sr = librosa.load(path, sr=16000)

and use it further as per your requirement.

edited Feb 09 '22 at 00:08

Bao Huynh Lam

answered Feb 08 '22 at 19:51

Naman Palliwal

2 Answers2