Pydub

import numpy as np import torch import torchaudio import torchaudio.transforms as T ''' in: pydub.AudioSegment out: torch.Tensor (float32) ''' def to_tensor(audio): sample_width = audio.sample_width sample_bits = 8 * sample_width sample_max_int = 2 ** sample_bits sample_channels = audio.channels samples = np.asarray(audio.get_array_of_samples()) samples = samples.reshape((-1, 2)).transpose((1, 0)) # LRLR -> Channel, Samples samples = samples.astype('f') / sample_max_int samples = torch.from_numpy(samples).type(torch.float32) return samples

PortAudio: PortAudio API Overview Host API ALSA (Ubuntu) Core Audio (Mac) Device Speaker Mic Stream sample rate (num of samples per second) sample format (num of bytes of a sample, integer or float) PyAudio Documentation — PyAudio 0.2.11 documentation Audio device detection w/ pyaudio brew install portaudio pip3 install pyaudio macOSにpyaudioをインストールする - Qiita Check Host APIs import pyaudio pa = pyaudio.PyAudio() api_count = pa.get_host_api_count() print('Host API:', api_count) for i in range(api_count): api_info = pa.get_host_api_info_by_index(i) print(api_info) device_count = api_info['deviceCount'] for j in range(device_count): device_info = pa.get_device_info_by_host_api_device_index(i, j) print(device_info) pa.terminate() Host API: 1 {'index': 0, 'structVersion': 1, 'type': 5, 'name': 'Core Audio', 'deviceCount': 2, 'defaultInputDevice': 0, 'defaultOutputDevice': 1} {'index': 0, 'structVersion': 2, 'name': 'Built-in Microphone', 'hostApi': 0, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.0029478458049886623, 'defaultLowOutputLatency': 0.01, 'defaultHighInputLatency': 0.01310657596371882, 'defaultHighOutputLatency': 0.1, 'defaultSampleRate': 44100.0} {'index': 1, 'structVersion': 2, 'name': 'Built-in Output', 'hostApi': 0, 'maxInputChannels': 0, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.01, 'defaultLowOutputLatency': 0.007800453514739229, 'defaultHighInputLatency': 0.1, 'defaultHighOutputLatency': 0.017959183673469388, 'defaultSampleRate': 44100.0} Check Devices import pyaudio pa = pyaudio.PyAudio() device_count = pa.get_device_count() print('Device:', device_count) for i in range(device_count): device_info = pa.get_device_info_by_index(i) print(device_info) pa.terminate() Device: 2 {'index': 0, 'structVersion': 2, 'name': 'Built-in Microphone', 'hostApi': 0, 'maxInputChannels': 2, 'maxOutputChannels': 0, 'defaultLowInputLatency': 0.0029478458049886623, 'defaultLowOutputLatency': 0.01, 'defaultHighInputLatency': 0.01310657596371882, 'defaultHighOutputLatency': 0.1, 'defaultSampleRate': 44100.0} {'index': 1, 'structVersion': 2, 'name': 'Built-in Output', 'hostApi': 0, 'maxInputChannels': 0, 'maxOutputChannels': 2, 'defaultLowInputLatency': 0.01, 'defaultLowOutputLatency': 0.007800453514739229, 'defaultHighInputLatency': 0.1, 'defaultHighOutputLatency': 0.017959183673469388, 'defaultSampleRate': 44100.0} Stream ※ waveだけ鳴らせればいい場合はwaveモジュールを使ってください（参照） ...