mirror of https://github.com/coqui-ai/TTS.git
48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
import tensorflow as tf
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from TTS.vocoder.tf.models.melgan_generator import MelganGenerator
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from TTS.vocoder.tf.layers.pqmf import PQMF
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class MultibandMelganGenerator(MelganGenerator): # pylint: disable=too-many-ancestors
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def __init__(self,
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in_channels=80,
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out_channels=4,
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proj_kernel=7,
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base_channels=384,
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upsample_factors=(2, 8, 2, 2),
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res_kernel=3,
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num_res_blocks=3):
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super(MultibandMelganGenerator,
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self).__init__(in_channels=in_channels,
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out_channels=out_channels,
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proj_kernel=proj_kernel,
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base_channels=base_channels,
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upsample_factors=upsample_factors,
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res_kernel=res_kernel,
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num_res_blocks=num_res_blocks)
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self.pqmf_layer = PQMF(N=4, taps=62, cutoff=0.15, beta=9.0)
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def pqmf_analysis(self, x):
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return self.pqmf_layer.analysis(x)
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def pqmf_synthesis(self, x):
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return self.pqmf_layer.synthesis(x)
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# def call(self, c, training=False):
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# if training:
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# raise NotImplementedError()
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# return self.inference(c)
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def inference(self, c):
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c = tf.transpose(c, perm=[0, 2, 1])
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c = tf.expand_dims(c, 2)
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# FIXME: TF had no replicate padding as in Torch
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# c = tf.pad(c, [[0, 0], [self.inference_padding, self.inference_padding], [0, 0], [0, 0]], "REFLECT")
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o = c
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for layer in self.model_layers:
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o = layer(o)
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o = tf.transpose(o, perm=[0, 3, 2, 1])
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o = self.pqmf_layer.synthesis(o[:, :, 0, :])
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return o
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