PyAudioを使ったPython録音処理

pip install pyaudio

sudo apt install python3-pyaudio

import pyaudio
import wave

REC_TIME = 10 # sec
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 2**12

audio = pyaudio.PyAudio()
stream = audio.open(format=FORMAT,
                    channels=CHANNELS,
                    rate=RATE,
                    input=True,
                    frames_per_buffer=CHUNK)
print("recording now...")

# 録音処理
frames = []
for i in range(0, int((RATE / CHUNK) * REC_TIME)):
    data = stream.read(CHUNK)
    frames.append(data)
#;

# 録音終了
stream.stop_stream()
stream.close()
audio.terminate()

# 保存
wave_file = wave.open('output.wav', 'wb')
wave_file.setnchannels(CHANNELS)
wave_file.setsampwidth(audio.get_sample_size(FORMAT))
wave_file.setframerate(RATE)
wave_file.writeframes(b''.join(frames))
wave_file.close()

import pyaudio
import wave

REC_TIME = 10 # sec
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 2**12
DEVICE_INDEX = 2

audio = pyaudio.PyAudio()
stream = audio.open(format=FORMAT,
                    channels=CHANNELS,
                    rate=RATE,
                    input=True,
                    input_device_index=DEVICE_INDEX,
                    frames_per_buffer=CHUNK)
print("recording now...")

# 録音処理
frames = []
for i in range(0, int((RATE / CHUNK) * REC_TIME)):
    data = stream.read(CHUNK)
    frames.append(data)
#;

# 録音終了
stream.stop_stream()
stream.close()
audio.terminate()

# 保存
wave_file = wave.open('output.wav', 'wb')
wave_file.setnchannels(CHANNELS)
wave_file.setsampwidth(audio.get_sample_size(FORMAT))
wave_file.setframerate(RATE)
wave_file.writeframes(b''.join(frames))
wave_file.close()