(This is not an official Google product!)
Multichannel Audio Tools contains common signal processing building blocks, vectorized for multichannel processing using Eigen.
A non-exhaustive list of libraries in this repo:
- biquad filters
- ladder filters (with time-varying coefficients and enforced stability)
- filter design libraries
- lowpass, highpass, etc.
- 2 way crossover, N-way crossover
- auditory cascade filterbank
- parametric equalizer
- perceptual loudness filters for implementing ITU standards
- dynamic range control
- compression
- limiter
- noise gate
- expanders
- multiband dynamic range control
- envelope detectors
- gmock matchers for vector/Eigen types
- some other single-channel tools:
- a fast rational factor resampler
- spectrograms
- a mel-frequency cepstral coefficient calculator
Contact multichannel-audio-tools-maintainers@google.com with questions/issues.
This library is intended to be built with Bazel. See command below regarding running tests and building with the proper flags.
bazel test -c opt --cxxopt="-fext-numeric-literals" \
--cxxopt="-Wno-sign-compare" \
--cxxopt="-fpermissive" \
--cxxopt="-std=c++11" \
audio/... \