Python录音的代码

import pyaudio
import wave
import threading
import time

class Recorder:
    def __init__(self, filename='recording.wav', chunk=1024, format=pyaudio.paInt16, channels=2, rate=44100):
        self.filename = filename
        self.chunk = chunk
        self.format = format
        self.channels = channels
        self.rate = rate
        self.frames = []
        self.p = pyaudio.PyAudio()
        self.is_recording = False
        self.record_thread = None

    def start_recording(self):
        if self.is_recording:
            print("Recording is already in progress.")
            return

        print("Recording started.")
        self.is_recording = True
        self.frames = []
        self.stream = self.p.open(format=self.format,
                                  channels=self.channels,
                                  rate=self.rate,
                                  input=True,
                                  frames_per_buffer=self.chunk)
        self.record_thread = threading.Thread(target=self._record)
        self.record_thread.start()

    def stop_recording(self):
        if not self.is_recording:
            print("No recording in progress.")
            return

        print("Recording stopped.")
        self.is_recording = False
        self.stream.stop_stream()
        self.stream.close()
        self.record_thread.join()
        wf = wave.open(self.filename, 'wb')
        wf.setnchannels(self.channels)
        wf.setsampwidth(self.p.get_sample_size(self.format))
        wf.setframerate(self.rate)
        wf.writeframes(b''.join(self.frames))
        wf.close()

    def _record(self):
        while self.is_recording:
            data = self.stream.read(self.chunk)
            self.frames.append(data)

if __name__ == "__main__":
    filename = input("Enter the filename to save recording (default is 'recording.wav'): ").strip() or 'recording.wav'
    recorder = Recorder(filename=filename)
    
    print("Press 'r' to start recording, 's' to stop recording, and 'q' to quit.")
    while True:
        command = input("> ").strip().lower()
        if command == 'r':
            recorder.start_recording()
        elif command == 's':
            recorder.stop_recording()
            print("Recording saved to", filename)
        elif command == 'q':
            if recorder.is_recording:
                recorder.stop_recording()
                print("Recording saved to", filename)
            break
        else:
            print("Invalid command. Please enter 'r' to start recording, 's' to stop recording, or 'q' to quit.")
        time.sleep(0.1)  # sleep to avoid high CPU usage in the loop