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Expressed triangular wave as a function of the associated sawtooth-shape wave

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This commit is contained in:
Fabio Manganiello 2018-12-27 17:33:05 +01:00
parent debf9a017b
commit 2e82651dbf
1 changed files with 3 additions and 4 deletions
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7
platypush/plugins/sound/core.py
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@ -145,12 +145,11 @@ class Sound(object):
if self.shape == WaveShape.SQUARE: if self.shape == WaveShape.SQUARE:
wave[wave < 0] = -1 wave[wave < 0] = -1
wave[wave >= 0] = 1 wave[wave >= 0] = 1
elif self.shape == WaveShape.SAWTOOTH: elif self.shape == WaveShape.SAWTOOTH or self.shape == WaveShape.TRIANG:
wave = 2 * (self.frequency*x - wave = 2 * (self.frequency*x -
np.floor(0.5 + self.frequency*x)) np.floor(0.5 + self.frequency*x))
elif self.shape == WaveShape.TRIANG: if self.shape == WaveShape.TRIANG:
wave = 2 * np.abs(2 * (self.frequency*x - wave = 2 * np.abs(wave) - 1
np.floor(0.5 + self.frequency*x))) -1
else: else:
raise RuntimeError('Unsupported wave shape: {}'.format(self.shape)) raise RuntimeError('Unsupported wave shape: {}'.format(self.shape))