forked from mindspore-Ecosystem/mindspore
103 lines
3.6 KiB
ReStructuredText
103 lines
3.6 KiB
ReStructuredText
mindspore.dataset.audio
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=======================
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.. include:: dataset_audio/mindspore.dataset.audio.rst
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数据增强算子可以放入数据处理Pipeline中执行，也可以Eager模式执行：
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- Pipeline模式一般用于处理数据集，示例可参考 `数据处理Pipeline介绍 <https://www.mindspore.cn/docs/zh-CN/master/api_python/mindspore.dataset.html#数据处理pipeline介绍>`_。
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- Eager模式一般用于零散样本，音频预处理举例如下：
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.. code-block::
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import numpy as np
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import mindspore.dataset.audio as audio
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from mindspore.dataset.audio import ResampleMethod
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# 音频输入
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waveform = np.random.random([1, 30])
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# 增强操作
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resample_op = audio.Resample(orig_freq=48000, new_freq=16000,
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resample_method=ResampleMethod.SINC_INTERPOLATION,
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lowpass_filter_width=6, rolloff=0.99, beta=None)
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waveform_resampled = resample_op(waveform)
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print("waveform reampled: {}".format(waveform_resampled), flush=True)
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变换
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-----
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.. mscnautosummary::
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:toctree: dataset_audio
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:nosignatures:
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:template: classtemplate.rst
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mindspore.dataset.audio.AllpassBiquad
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mindspore.dataset.audio.AmplitudeToDB
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mindspore.dataset.audio.Angle
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mindspore.dataset.audio.BandBiquad
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mindspore.dataset.audio.BandpassBiquad
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mindspore.dataset.audio.BandrejectBiquad
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mindspore.dataset.audio.BassBiquad
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mindspore.dataset.audio.Biquad
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mindspore.dataset.audio.ComplexNorm
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mindspore.dataset.audio.ComputeDeltas
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mindspore.dataset.audio.Contrast
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mindspore.dataset.audio.DBToAmplitude
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mindspore.dataset.audio.DCShift
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mindspore.dataset.audio.DeemphBiquad
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mindspore.dataset.audio.DetectPitchFrequency
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mindspore.dataset.audio.Dither
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mindspore.dataset.audio.EqualizerBiquad
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mindspore.dataset.audio.Fade
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mindspore.dataset.audio.Flanger
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mindspore.dataset.audio.FrequencyMasking
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mindspore.dataset.audio.Gain
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mindspore.dataset.audio.GriffinLim
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mindspore.dataset.audio.HighpassBiquad
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mindspore.dataset.audio.InverseMelScale
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mindspore.dataset.audio.LFilter
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mindspore.dataset.audio.LowpassBiquad
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mindspore.dataset.audio.Magphase
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mindspore.dataset.audio.MaskAlongAxis
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mindspore.dataset.audio.MaskAlongAxisIID
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mindspore.dataset.audio.MelScale
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mindspore.dataset.audio.MuLawDecoding
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mindspore.dataset.audio.MuLawEncoding
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mindspore.dataset.audio.Overdrive
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mindspore.dataset.audio.Phaser
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mindspore.dataset.audio.PhaseVocoder
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mindspore.dataset.audio.Resample
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mindspore.dataset.audio.RiaaBiquad
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mindspore.dataset.audio.SlidingWindowCmn
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mindspore.dataset.audio.SpectralCentroid
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mindspore.dataset.audio.Spectrogram
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mindspore.dataset.audio.TimeMasking
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mindspore.dataset.audio.TimeStretch
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mindspore.dataset.audio.TrebleBiquad
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mindspore.dataset.audio.Vad
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mindspore.dataset.audio.Vol
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工具
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-----
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.. mscnautosummary::
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:toctree: dataset_audio
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:nosignatures:
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:template: classtemplate.rst
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mindspore.dataset.audio.BorderType
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mindspore.dataset.audio.DensityFunction
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mindspore.dataset.audio.FadeShape
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mindspore.dataset.audio.GainType
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mindspore.dataset.audio.Interpolation
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mindspore.dataset.audio.MelType
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mindspore.dataset.audio.Modulation
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mindspore.dataset.audio.NormMode
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mindspore.dataset.audio.NormType
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mindspore.dataset.audio.ResampleMethod
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mindspore.dataset.audio.ScaleType
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mindspore.dataset.audio.WindowType
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mindspore.dataset.audio.create_dct
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mindspore.dataset.audio.melscale_fbanks
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