[파이썬] 마이크 녹음(puaudio)

마이크 녹음

마이크 인덱스 번호 확인., 아래 결과에서 INDEX=12, RATE=48000을 확인

import pyaudio

po = pyaudio.PyAudio()
for index in range(po.get_device_count()): 
    desc = po.get_device_info_by_index(index)
    print("DEVICE: %s  INDEX:  %s  RATE:  %s " %  (desc["name"], index,  int(desc["defaultSampleRate"])))

녹음

위에서 확인된 index와 rate를 사용.

import pyaudio
import wave

FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 48000
CHUNK = 1024
RECORD_SECONDS = 5
DEVICE_IDX = 12
WAVE_OUTPUT_FILENAME = "E:/RnD/temp/micFile.wav"

audio = pyaudio.PyAudio()

# start Recording
stream = audio.open(format=pyaudio.paInt16,channels=CHANNELS,rate=RATE,input=True,input_device_index=DEVICE_IDX,frames_per_buffer=CHUNK)
# input_device를 설정하지 않아도 됨
# stream = audio.open(format=pyaudio.paInt16,channels=CHANNELS,rate=RATE,input=True,frames_per_buffer=CHUNK)

print("recording...")
frames = []

for i in range(0, int(RATE / CHUNK * RECORD_SECONDS)):
    data = stream.read(CHUNK)
    frames.append(data)

print("finished recording")


# stop Recording
stream.stop_stream()
stream.close()
audio.terminate()

waveFile = wave.open(WAVE_OUTPUT_FILENAME, 'wb')
waveFile.setnchannels(CHANNELS)
waveFile.setsampwidth(audio.get_sample_size(FORMAT))
waveFile.setframerate(RATE)
waveFile.writeframes(b''.join(frames))
waveFile.close()