File size: 2,732 Bytes
387c3d6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 | import sounddevice as sd
import wave
import numpy as np
from PyQt6.QtCore import QObject, pyqtSignal
class AudioWorker(QObject):
"""
音频录制工作线程
"""
audio_recorded = pyqtSignal(bytes) # 录制完成后发送音频数据
error_occurred = pyqtSignal(str) # 发生错误时发射
def __init__(self):
super().__init__()
self.is_recording = False
self.frames = []
self.sample_rate = 48000 # 采样率
self.channels = 2 # 双声道
self.stream = None
def start_recording(self):
"""
开始录制音频
"""
if self.is_recording:
self.error_occurred.emit("录制已在进行中")
return
self.is_recording = True
self.frames = []
try:
# 开始录制
self.stream = sd.InputStream(callback=self.audio_callback,
samplerate=self.sample_rate,
channels=self.channels)
self.stream.start()
except Exception as e:
self.is_recording = False
self.error_occurred.emit(f"录制失败: {e}")
def stop_recording(self):
"""
停止录制音频
"""
if not self.is_recording:
self.error_occurred.emit("录制未开始")
return
self.is_recording = False
# 停止流
if self.stream:
self.stream.stop()
self.stream.close()
self.stream = None
try:
# 将录制的音频数据转换为字节
audio_data = np.concatenate(self.frames, axis=0)
# 归一化音频数据
audio_data = audio_data / np.max(np.abs(audio_data), axis=0)
# 保存为 WAV 文件
with wave.open("temp_audio.wav", "wb") as wf:
wf.setnchannels(self.channels)
wf.setsampwidth(2) # 16位音频
wf.setframerate(self.sample_rate)
wf.writeframes((audio_data * 32767).astype(np.int16).tobytes())
# 读取 WAV 文件并发送数据
with open("temp_audio.wav", "rb") as f:
self.audio_recorded.emit(f.read())
except Exception as e:
self.error_occurred.emit(f"音频处理失败: {e}")
def audio_callback(self, indata, frames, time, status):
"""
音频录制回调
"""
try:
if self.is_recording:
# 将录制的音频数据存储到 frames
self.frames.append(indata.copy())
except Exception as e:
self.error_occurred.emit(f"音频回调错误: {e}") |