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| # `FeatureExtractors`的工具 | |
| 此页面列出了音频 [`FeatureExtractor`] 可以使用的所有实用函数，以便使用常见的算法（如 *Short Time Fourier Transform* 或 *log mel spectrogram*）从原始音频中计算特殊特征。 | |
| 其中大多数仅在您研究库中音频processors的代码时有用。 | |
| ## 音频转换 | |
| [[autodoc]] audio_utils.hertz_to_mel | |
| [[autodoc]] audio_utils.mel_to_hertz | |
| [[autodoc]] audio_utils.mel_filter_bank | |
| [[autodoc]] audio_utils.optimal_fft_length | |
| [[autodoc]] audio_utils.window_function | |
| [[autodoc]] audio_utils.spectrogram | |
| [[autodoc]] audio_utils.power_to_db | |
| [[autodoc]] audio_utils.amplitude_to_db | |