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MASP ::: Multichannel Acoustic Signal Processing Library for Python

License PyPI

Python port of the following wonderful MATLAB libraries from A. Politis>

  • shoebox-roomsim: Fast Implementation of the Image Source Method

    • Convex 3D rooms.
    • Arbitrary number of sources and receivers, with arbitrary positions, orientations and directivities.
    • ISM expansion limited by order or time.
    • Frequency-dependent wall absorption.
    • RIR spherical harmonic expansion.
  • array-response-simulator: Simulation of spherical microphone arrays

    • Rigid/open configurations.
    • Scattering simulation.
    • Arbitrary capsule distances, positions and directivities.
  • spherical-array-processing: Methods for the transformation and analysis of signals measured with a spherical microphone array

    • A2B conversion with theoretical or measured filters.
    • Signal-independent beamforming. (TODO)
    • Signal-dependent and adaptive beamforming. (TODO)
    • Direction of Arrival estimation. (TODO)
    • Diffuseness estimation. (TODO)
  • spherical-harmonic-transform: Mathematical convenience tools.

Tested in OSX python3.7. It should work on python versions >=3.6.

Installation

Using pypi: pip install masp

Examples

Example implementations can be found in the /examples folder.

Test

Test files are located in masp/tests/. Numeric assertion of the algorithms is performed using the python-Matlab wrapper. Each method is compared against the Matlab reference implementation.

Therefore, in order to run the tests, a working copy of Matlab is required (with the signal processing toolbox), along with the Matlab engine API for Python.


Comparison with pyroomacoustics

Feature masp pra
masp.shoebox_room_model
--------------------------------------------------
Convex 3D room
Non-convex 3D room -
Arbitrary #sources
Arbitrary #receivers, arrays
ISM by max_order
ISM by max_time -
Wall absorption
Frequency-dependent absorption -
Plot methods -
RIR rendering
Audio simulation
Acoustic descriptor estimation -
Microphone orientation -
Custom microphone directivity -
RIR Spherical Harmonic Expansion -
masp.array_response_simulator
--------------------------------------------------
Rigid microphone arrays -
Scattering simulation -
Spherical arrays with arbitrary capsule distances -
Custom/measured array IRs into room simulation -
masp.spherical_array_processing
--------------------------------------------------
A2B theoretical conversion -
A2B measurement-based conversion -
Beamforming
Plane-wave decomposition -
Nullformer -
Adaptive Beamforming -
Adaptive Filtering -
DoA Estimation
Diffuseness Estimation -
Diffuse-field coherence -
Blind Source Separation -
additions?
--------------------------------------------------
source counting?

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Multichannel Acoustic Signal Processing library

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