dsptoolbox

Readme

This is a toolbox in form of a python package that contains algorithms to be used in dsp (digital signal processing) research projects.

This is kind of a “sandbox” project with many different experimental implementations across a variety of DSP-related topics. Some parts are more thoroughly tested and validated than others, so “caution” is advised. Please feel free to reach out in case you find bugs or want to talk about certain functionality.

It is under active development and it will take some time until it reaches a certain level of maturity. Beware that backwards compatibility is not an actual concern and significant changes to the API might come in the future. If you find some implementations interesting or useful, please feel free to use it for your projects and expand or change functionalities.

Getting Started

Refer to the documentation for the complete description of classes and functions.

import dsptoolbox as dsp

signal = dsp.Signal.from_file("recording.wav")
signal = signal.set_spectrum_parameters(method=dsp.SpectrumMethod.FFT)
frequencies_hz, spectrum = signal.get_spectrum()

lowpass = dsp.Filter.iir_filter(
    order=8,
    frequency_hz=2000.0,
    type_of_pass=dsp.FilterPassType.Lowpass,
    sampling_rate_hz=signal.sampling_rate_hz,
)
filtered = lowpass.filter_signal(signal)
filtered.plot_magnitude()
dsp.plots.show()

Installation

Use pip to install dsptoolbox

$ pip install dsptoolbox

# Or this for activating numba parallelization
$ pip install "dsptoolbox[use-numba]"

(Requires Python 3.11 or higher)

On Linux, install the native audio libraries used by the audio dependencies manually. sounddevice uses PortAudio for live audio input and output, while soundfile uses libsndfile for reading and writing audio files. Install them with the following command:

$ sudo apt-get install libasound-dev libportaudio2 libsndfile1

If this does not work properly for some reason, refer to the documentation for sounddevice, soundfile, or PortAudio.

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dsptoolbox 0.11.1

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