noise_reduction

See test results on: https://dodiku.github.io/noise_reduction/

Audio enhancements feature tests in Python3

Installation

To install:

$ brew install sox
$ brew install vorbis-tools
Create a virtualenv
Install dependencies in one of two options:

manually (recommended):
$ pip3 install librosa
$ pip3 install pysndfx
or automatically using pip:
$ pip3 install -r requirements.txt

To run:
$ python3 noise.py

Interesting resources:

LibROSA (documentation + repository + paper)
Think DSP (book + repository)
Pyo (blog post + repository)
pysndfx (repository)

A bit less relevant papers:

Noise Cancellation Method for Robust Speech Recognition (PDF)
Robust Features for Noisy Speech Recognition using MFCC Computation from Magnitude Spectrum of Higher Order Autocorrelation Coefficients (PDF)
Improving the Noise-Robustness of Mel-Frequency Cepstral Coefficients for Speech Processing (PDF)