pip install audioread
python -c "import audioread; print(audioread.__version__)"
sudo apt-get install ffmpeg
audioread.audio_open
函数打开音频文件,可轻松获取时长、采样率、声道数等信息:import audioread
with audioread.audio_open('example.mp3') as f:
print(f"文件时长:{f.duration:.2f} 秒")
print(f"采样率:{f.samplerate} Hz")
print(f"声道数:{f.channels}")
文件时长:180.00 秒
采样率:44100 Hz
声道数:2
with audioread.audio_open('example.mp3') as f:
for frame in f:
# 处理每一帧数据,例如转换为 NumPy 数组
samples = np.frombuffer(frame, dtype=np.int16)
# 进一步分析或保存
np.reshape
转换为二维数组:with audioread.audio_open('stereo.wav') as f:
audio_data = b''.join(frame for frame in f)
samples = np.frombuffer(audio_data, dtype=np.int16)
if f.channels == :
samples = samples.reshape(-, ) # 重塑为(时间点,声道)格式
import soundfile as sf
from scipy.signal import butter, filtfilt
# 读取音频并加噪(示例)
with audioread.audio_open('noisy_audio.wav') as f:
audio_data = b''.join(f)
noisy_samples = np.frombuffer(audio_data, dtype=np.int16)
# 设计低通滤波器
def butter_lowpass(cutoff, fs, order=):
nyq = 0.5 * fs
normal_cutoff = cutoff / nyq
b, a = butter(order, normal_cutoff, btype='low', analog=False)
return b, a
b, a = butter_lowpass(, f.samplerate)
filtered_samples = filtfilt(b, a, noisy_samples)
# 保存降噪后的音频
sf.write('clean_audio.wav', filtered_samples, f.samplerate)
import wave
with audioread.audio_open('input.mp3') as f:
with wave.open('output.wav', 'wb') as wav_file:
wav_file.setnchannels(f.channels)
wav_file.setsampwidth() # 16-bit PCM
wav_file.setframerate(f.samplerate)
for frame in f:
wav_file.writeframes(frame)
from concurrent.futures import ThreadPoolExecutor
def process_audio(file_path):
with audioread.audio_open(file_path) as f:
# 处理逻辑
pass
files = ['file1.mp3', 'file2.mp3', 'file3.mp3']
with ThreadPoolExecutor() as executor:
executor.map(process_audio, files)
from functools import lru_cache
@lru_cache(maxsize=)
def get_audio_info(file_path):
with audioread.audio_open(file_path) as f:
return {
'duration': f.duration,
'samplerate': f.samplerate,
'channels': f.channels
}
# 导出为 WAV 供 Audacity 使用
with audioread.audio_open('processed_audio.mp3') as f:
sf.write('audacity_input.wav', audio_data, f.samplerate)
from gtts import gTTS
# 生成语音文件
text = "欢迎收听今天的播客节目..."
tts = gTTS(text=text, lang='en')
tts.save('podcast_script.mp3')
# 使用 Audioread 读取并处理
with audioread.audio_open('podcast_script.mp3') as f:
# 调整语速或音量(示例)
# 这里可添加音频特效或混音
pass
# 生成 RSS 源示例
rss_template = """
My Podcast
-
Episode 1
"""
with open('podcast.rss', 'w') as f:
f.write(rss_template)
sudo apt-get install ffmpeg # Ubuntu
brew install ffmpeg # macOS
available_backends()
函数,确认支持的格式,或转换文件格式。librosa
进行特征提取,soundfile
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