以任何信噪比(SNR)将音频文件与噪声文件混合_Python_下载.zip

# Mixing an audio file with a noise file at any Signal-to-Noise Ratio The script `create_mixed_audio_file.py` and `create_mixed_audio_file_with_soundfile.py` can mix an audio file with a noise file at any Signal-to-Noise Ratio (SNR). You can listen to the results of [mixtures](/data/16_bit/output_mixed) of the [clean voice](data/16_bit/source_clean) and the [noise](data/16_bit/source_noise). ## Installation - Python3.7+ - macOS ### Setup I recommend to install [Pipenv](https://github.com/pypa/pipenv) for making set-up easy before proceeding: If you're on macOS, you can install Pipenv easily with Homebrew: ``` $ brew install pipenv ``` After installing Pipenv, you run the following command to build a virtualenv and install packages listed in `Pipfile.lock`. ``` $ pipenv install ``` Then, you can run the following command to activate a virtualenv. ``` $ pipenv shell ``` ### File format To use this code, the format of source waveforms is as follows. - WAV file - 1 channel Additionally, the sampling rate of a clean file and that of a noise file are supposed to be the same. ## Usage There are two files for creating a mixture. - `create_mixed_audio_file.py`: - Uses wave module - Can read wav file with 16-bit PCM only - `create_mixed_audio_file_with_soundfile.py`: - Uses soundfile library - Can read wav file with various encoding types such as 16-bit PCM, 32-bit PCM, 32-bit float, and 64-bit float. After activating a virtualenv, you can run the files to mix an audio file with a noise file at any signal-to-noise ratio. Example of `create_mixed_audio_file.py`: ``` python create_mixed_audio_file.py --clean_file ~/workspace/audio-SNR/data/16_bit/source_clean/arctic_a0001.wav --noise_file ~/workspace/audio-SNR/data/16_bit/source_noise/ch01.wav --snr 0 --output_mixed_file ~/workspace/audio-SNR/data/16_bit/output_mixed/0dB.wav ``` Example of `create_mixed_audio_file_with_soundfile.py`: ``` python create_mixed_audio_file_with_soundfile.py --clean_file ~/workspace/audio-SNR/data/64_bit/source_clean/arctic_a0001_64bit.wav --noise_file ~/workspace/audio-SNR/data/64_bit/source_noise/ch01_64bit.wav --snr 0 --output_mixed_file ~/workspace/audio-SNR/data/64_bit/output_mixed/0dB.wav ``` ## Dataset I really appreciate the following public datasets. - [Voices](http://festvox.org/cmu_arctic/) - CMU_ARCTIC speech synthesis databases - [Noises](https://zenodo.org/record/1227121#.W2wUVNj7TUI) - DEMAND: a collection of multi-channel recordings of acoustic noise in diverse environments ## Detail There is a detail about `create_mixed_audio_file.py` on my post (in Japanese). [https://engineering.linecorp.com/ja/blog/voice-waveform-arbitrary-signal-to-noise-ratio-python/](https://engineering.linecorp.com/ja/blog/voice-waveform-arbitrary-signal-to-noise-ratio-python/) There is a detail about `create_mixed_audio_file.py` on my post (in Korean). [https://engineering.linecorp.com/ko/blog/voice-waveform-arbitrary-signal-to-noise-ratio-python/](https://engineering.linecorp.com/ko/blog/voice-waveform-arbitrary-signal-to-noise-ratio-python/)