pyqt5 音频可视化
时间: 2023-11-07 22:58:56 浏览: 170
要使用PyQt5进行音频可视化,需要使用PyQtGraph库。以下是一个简单的例子:
```python
import pyqtgraph as pg
import numpy as np
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtCore import Qt
import sys
import soundfile as sf
class AudioVisualizer(QMainWindow):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.setWindowTitle("Audio Visualizer")
self.setGeometry(100, 100, 800, 600)
self.centralwidget = pg.GraphicsLayoutWidget(self)
self.setCentralWidget(self.centralwidget)
self.plot = self.centralwidget.addPlot(title="Audio Signal", row=0, col=0)
self.plot.setLabel('left', 'Amplitude')
self.plot.setLabel('bottom', 'Time', units='s')
self.plot.setYRange(-1, 1)
self.plot.showGrid(x=True, y=True)
self.plot.setMouseEnabled(x=False, y=False)
self.plot.hideButtons()
self.audio_data, self.sample_rate = sf.read('audio_file.wav')
self.audio_data = self.audio_data[:, 0] # get only one channel
self.time = np.arange(0, len(self.audio_data)) / self.sample_rate
self.curve = self.plot.plot(self.time, self.audio_data)
timer = pg.QtCore.QTimer(self)
timer.timeout.connect(self.update)
timer.start(10)
def update(self):
self.audio_data, self.sample_rate = sf.read('audio_file.wav')
self.audio_data = self.audio_data[:, 0] # get only one channel
self.time = np.arange(0, len(self.audio_data)) / self.sample_rate
self.curve.setData(self.time, self.audio_data)
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = AudioVisualizer()
ex.show()
sys.exit(app.exec_())
```
这个例子会打开一个窗口,并在窗口中显示一个波形图,该波形图显示一个音频文件的振幅随时间变化的情况。程序将每隔10毫秒更新一次波形图,以显示音频的实时振幅情况。
要对波形图进行更详细的控制,可以使用PyQtGraph提供的其他功能,例如添加多个波形图、显示频谱等。
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