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mindspore.dataset.audio.Gain
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.. py:class:: mindspore.dataset.audio.Gain(gain_db=1.0)
放大或衰减整个音频波形。
参数：
- **gain_db** (float) - 增益调整，单位为分贝（dB）。默认值：1.0。
异常：
- **TypeError** - 当 `gain_db` 的类型不为float。