forked from platypush/platypush
Expressed triangular wave as a function of the associated sawtooth-shape wave
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1 changed files with 3 additions and 4 deletions
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@ -145,12 +145,11 @@ class Sound(object):
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if self.shape == WaveShape.SQUARE:
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wave[wave < 0] = -1
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wave[wave >= 0] = 1
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elif self.shape == WaveShape.SAWTOOTH:
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elif self.shape == WaveShape.SAWTOOTH or self.shape == WaveShape.TRIANG:
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wave = 2 * (self.frequency*x -
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np.floor(0.5 + self.frequency*x))
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elif self.shape == WaveShape.TRIANG:
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wave = 2 * np.abs(2 * (self.frequency*x -
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np.floor(0.5 + self.frequency*x))) -1
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if self.shape == WaveShape.TRIANG:
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wave = 2 * np.abs(wave) - 1
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else:
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raise RuntimeError('Unsupported wave shape: {}'.format(self.shape))
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