pyqt5和pyaudio实现录音放音功能

可以使用PyQt5和PyAudio库实现录音和放音功能。下面是一个简单的示例代码：

import sys
import pyaudio
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton


class AudioRecorder(QWidget):
    def __init__(self):
        super().__init__()

        # 初始化PyAudio
        self.audio = pyaudio.PyAudio()

        # 创建布局和按钮
        layout = QVBoxLayout()
        self.record_button = QPushButton("Record", self)
        self.play_button = QPushButton("Play", self)

        # 添加按钮到布局
        layout.addWidget(self.record_button)
        layout.addWidget(self.play_button)

        # 设置主窗口布局
        self.setLayout(layout)

        # 绑定按钮点击事件
        self.record_button.clicked.connect(self.start_recording)
        self.play_button.clicked.connect(self.play_recording)

        # 初始化录音状态和声音数据
        self.is_recording = False
        self.record_data = []

    def start_recording(self):
        if not self.is_recording:
            self.is_recording = True
            self.record_data = []
            self.record_stream = self.audio.open(format=pyaudio.paInt16, channels=1, rate=44100,
                                                 input=True, frames_per_buffer=1024)

    def play_recording(self):
        if not self.is_recording and self.record_data:
            self.play_stream = self.audio.open(format=pyaudio.paInt16, channels=1, rate=44100,
                                               output=True)
            for data in self.record_data:
                self.play_stream.write(data)
            self.play_stream.stop_stream()
            self.play_stream.close()

    def closeEvent(self, event):
        # 关闭窗口时停止录音并释放资源
        if self.is_recording:
            self.is_recording = False
            self.record_stream.stop_stream()
            self.record_stream.close()
        self.audio.terminate()
        event.accept()

    def keyPressEvent(self, event):
        # 按下空格键开始/停止录音
        if event.key() == Qt.Key_Space:
            if self.is_recording:
                self.is_recording = False
                self.record_stream.stop_stream()
                self.record_stream.close()
                self.record_data.append(b''.join(self.record_buffer))
            else:
                self.is_recording = True
                self.record_buffer = []
                self.record_stream = self.audio.open(format=pyaudio.paInt16, channels=1, rate=44100,
                                                     input=True, frames_per_buffer=1024)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    recorder = AudioRecorder()
    recorder.show()
    sys.exit(app.exec_())

这个程序创建了一个窗口，其中包含“Record”和“Play”两个按钮。点击“Record”按钮将开始录音，点击“Play”按钮将播放录音。程序还允许通过按下空格键开始/停止录音。

录音数据存储在`record_data`变量中，以字节串的形式存储。播放录音时，程序将遍历这个列表并写入声音流。