README.md

librosapp

About

This repository is a transplant of librosa by C++.

The following functions are supported in this repository after end-to-end testing.

• librosa::stft
• librosa::filters::mel
• librosa::feature::melspectrogram
• librosa::feature::inverse::mel_to_stft

Requirement

1. install submodules

$ git submodule update --init

2. build kissfft

This is done to build kissfft. If you want to build by other methods, skip this step.
NOTE: If you are a Windows user, use an absolute path for -voption.
$ docker run -v C:\workspace\librosapp:/app -it gcc:12.1 bash /app/build_kissfft.sh

3. Run sample code

You can run the sample code by executing $ ./run_test.sh or $ docker-compose up --build

Usage

stft

    librosa::stft_arg stft_arg;
    stft_arg.y = audio;

    auto result = librosa::stft(&stft_arg);

_spectgram

    librosa::core::spectrum::_spectrogram_arg spec_arg;
    spec_arg.y = audio;

    auto result = librosa::core::spectrum::_spectrogram(&spec_arg);

filters::mel

    librosa::filters::mel_arg mel_arg;

    auto mel_basis = librosa::filters::mel(&mel_arg);

melspectrogram

    librosa::feature::melspectrogram_arg melspec_arg;
    melspec_arg.y = audio;

    auto melspec = librosa::feature::melspectrogram(&melspec_arg);

mel_to_stft

    librosa::feature::melspectrogram_arg melspec_arg;
    melspec_arg.y = audio;
    auto melspec = librosa::feature::melspectrogram(&melspec_arg);

    librosa::feature::inverse::mel_to_stft_arg arg;
    arg.M = melspec;
    arg.n_fft = melspec_arg.n_fft;
    arg.power = 2.0;
    arg.sr = melspec_arg.sr;

    auto spec = librosa::feature::inverse::mel_to_stft(&arg);

related project

librosa
kissfft
Eigen
LBFGSpp