在 Python 中使用 pyaudio 添加錄音持續時間

Question

我正在用 Python 編寫一個程序，使用 pyaudio 創建和錄制音頻文件。 音頻文件創建已成功完成，但在錄制時，我遇到了麻煩，因為它沒有捕獲任何內容。

import pyaudio
import wave
import time
import sys
from datetime import datetime

CHUNK = 1024
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
RECORD_SECONDS = 5

WAVE_OUTPUT_FILENAME = 'Audio.wav'

p = pyaudio.PyAudio()
stream = p.open(format=FORMAT,
                channels=CHANNELS,
                rate=RATE,
                input=True,
                frames_per_buffer=CHUNK)


frames = []
print('* done recording')

stream.stop_stream()
stream.close()
p.terminate()

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

如何在錄音中添加持續時間？

Answer 1

我得到了答案，我在這里分享

import pyaudio, wave, sys

CHUNK = 8192
FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
RECORD_SECONDS = 10

WAVE_OUTPUT_FILENAME = 'Audio_.wav'
p = pyaudio.PyAudio()
stream = p.open(format=FORMAT,
                channels = CHANNELS,
                rate = RATE,
                input = True,
                input_device_index = 0,
                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("* done recording")

stream.stop_stream()
stream.close()
p.terminate()

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

Answer 2

實際上你必須調用stream.read來開始捕獲，看來你已經明白了哈哈