Noise Reduction
https://github.com/ZackWalsh57/PythonNoiseReduction [unfinished]
https://github.com/ShinoharaYuuyoru/NoiseReductionUsingGRU [graduation project in BIT, 2018.]
https://github.com/jefflai108/noise_cancellation [casual project, matlab]
https://github.com/dodiku/audio_noise_clustering [An experiment]
https://github.com/dodiku/noise_reduction [An experiment]
300至3000Hz之間的電磁波譜特低頻頻帶也被稱為語音頻率 https://zh.wikipedia.org/wiki/语音频率
ffmpeg -i <input_file> -af "highpass=f=200, lowpass=f=3000" <output_file>
https://superuser.com/questions/733061/reduce-background-noise-and-optimize-the-speech-from-an-audio-clip-using-ffmpeg