Skip to main content

Simple API for reading / writing soundfiles

Project description

This package provides a simple and unified API to read and write sound-files to and from numpy arrays.

Documentation

https://sndfileio.readthedocs.io/en/latest/

API

sndread

  • reads all the samples (or a fragment) from a soundfile and returns a tuplet (data, samplerate)

  • Data will always be as a numpy.float64, between -1 and 1, independently of bit-rate

sndread_chunked

  • reads chunks of frames, avoiding the allocation of all the samples in memory

sndinfo

  • returns SndInfo, a namedtuple with all the information of the sound-file

sndwrite

  • writes the samples.

  • samples need to be a numpy.float64 array with data between -1 and 1

sndwrite_chunked

  • allows you to write to the file as samples become available

resample

Resample a numpy array to a new samplerate

Examples

# Normalize and save as flac
from sndfileio import sndread, sndwrite
samples, sr = sndread("in.wav")
maxvalue = max(samples.max(), -samples.min())
samples *= 1/maxvalue
sndwrite(samples, sr, "out.flac")
# Process a file in chunks
from sndfileio import *
from sndfileio.dsp import
with sndwrite_chunked(44100, "out.flac") as writer:
    for buf in sndread_chunked("in.flac"):
        # do some processing, like changing the gain
        buf *= 0.5
        writer.write(buf)

Installation

Make sure that you have libsamplerate installed.

pip install sndfileio

Dependencies

  • libsamplerate (apt install libsndfile1-dev)

All python dependencies are installed by pip

License

See the LICENSE file for license rights and limitations (MIT).

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

sndfileio-1.4.0.tar.gz (19.3 kB view hashes)

Uploaded Source

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page