simpleaudiostretch

A simple python package to stretch audio files and change their speed.

Installation

You can install the package by running the command pip install simpleaudiostretch

Features

• Supports many different audio formats, including mp3, wav, and also raw audio data in the form of numpy ndarrays.
• Its really fast, especially when working with raw audio data.

Documentation

The full documentation for this package can be found here.

Usage/Examples

Python

This is an example on how you might use this library
In this example we take a file called song.mp3 and make it twice as long:

import simplestretch

# A factor of 2 means the song becomes twice as long
simplestretch.stretch_audio("song.mp3", 2, "out.wav")

You might also have the raw audio data, in which case you could do the following:

import simplestretch, soundfile

# In this example we use soundfile to get the audio data
# But you can use any numpy ndarray representing audio
audio_data, samplerate = soundfile.read("song.mp3")

# When working with raw audio data
# You will also need to pass the audio's sample rate to the function
simplestretch.stretch_audio(audio_data, 2, output="out.wav", samplerate=samplerate)

You can also work with changes in speed rather than changes in length through the speedup_audio method:

import simplestretch

# In this example we make the song twice as fast rather than twice as long
simplestretch.speedup_audio("song.mp3", 2, "out.wav")

CLI

You can also use the command line interface to stretch your audios, through the simplestretch command.

Required Arguments

Short	Long	Description	Type
-a	--audio	Path to the audio file	String
-f	--factor	Factor for the change in audio length/speed	Float
-o	--output	Path for the output file	String

Optional Arguments

Short	Long	Description	Type
-s	--speed	Use this flag to target audio speed instead of length	Boolean

Example Commands

To stretch an audio file to 1.5 times its original size and save it:

simplestretch -a path/to/audio/file -f 1.5 -o path/to/output/file

To speed up an audio file to 2 times speed and save it:

simplestretch -a path/to/audio/file -f 2 -o path/to/output/file -s

Support

If you have any issues using this package or would like to request features, you can open an issue or contact me through my discord!