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mimic2
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Make power a hyperparameter

pull/2/head
Keith Ito 2017-09-03 12:36:09 -07:00
parent 6a793ba8c4
commit 0894cd9bf2
2 changed files with 4 additions and 3 deletions
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3
hparams.py
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@ -31,7 +31,8 @@ hparams = tf.contrib.training.HParams(
# Eval:
max_iters=200,
griffin_lim_iters=60
griffin_lim_iters=60,
power=1.5, # Power to raise magnitudes to prior to Griffin-Lim
)

4
util/audio.py
View File

@ -23,7 +23,7 @@ def spectrogram(y):
def inv_spectrogram(spectrogram):
S = _db_to_amp(_denormalize(spectrogram) + hparams.ref_level_db) # Convert back to linear
return _inv_preemphasis(_griffin_lim(S ** 1.5)) # Reconstruct phase
return _inv_preemphasis(_griffin_lim(S ** hparams.power)) # Reconstruct phase
def melspectrogram(y):
@ -34,7 +34,7 @@ def melspectrogram(y):
def inv_melspectrogram(melspectrogram):
S = _mel_to_linear(_db_to_amp(_denormalize(melspectrogram))) # Convert back to linear
return _inv_preemphasis(_griffin_lim(S ** 1.5)) # Reconstruct phase
return _inv_preemphasis(_griffin_lim(S ** hparams.power)) # Reconstruct phase
# Based on https://github.com/librosa/librosa/issues/434