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mindspore.dataset.audio.DBToAmplitude
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.. py:class:: mindspore.dataset.audio.DBToAmplitude(ref, power)
将音频波形从分贝转换为功率或振幅。
参数：
- **ref** (float) - 输出波形的缩放系数。
- **power** (float) - 如果 `power` 等于1，则将分贝值转为功率；如果为0.5，则将分贝值转为振幅。