Gurkengewuerz/audio-reactive-led-strip
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Updated visualize.py to reflect changes in DSP module

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This commit is contained in:
Scott Lawson 2016-11-07 17:43:12 -08:00
parent cb34b6353d
commit 404a216272
1 changed files with 13 additions and 9 deletions
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22
python/visualize.py
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@ -31,11 +31,11 @@ class Beat:
# Exponentially decay the brightness over time
# The decay helps to direct viewer's focus to newer and brighter beats
self.pixels *= np.exp(2. * np.log(.1) / (self.speed * config.N_PIXELS))
self.pixels *= np.exp(2. * np.log(.5) / (self.speed * config.N_PIXELS))
self.pixels = np.round(self.pixels, decimals=2)
self.pixels = np.clip(self.pixels, 0, 255)
self.speed *= np.exp(2. * np.log(.8) / config.N_PIXELS)
self.speed *= np.exp(2. * np.log(.95) / config.N_PIXELS)
def finished(self):
return np.array_equal(self.pixels, self.pixels * 0.0)
@ -56,7 +56,7 @@ def rainbow(speed=10.0 / 5.0):
return x
def radiate(beats, energy, beat_speed=1.0, max_length=7, min_beats=1):
def radiate(beats, energy, beat_speed=.6, max_length=7, min_beats=1):
N_beats = len(beats[beats == True])
if N_beats > 0 and N_beats >= min_beats:
@ -108,12 +108,16 @@ def microphone_update(stream):
y_roll[-1, :] = np.copy(y)
y_data = np.concatenate(y_roll, axis=0)
# Take the real FFT with logarithmic bin spacing
xs, ys = dsp.rfft_log_partition(y_data,
subbands=config.N_SUBBANDS,
window=np.hamming,
fmin=1,
fmax=14000)
# Visualize the result
xs, ys = dsp.rfft(y_data, window=np.hamming)
ys = ys[(xs >= config.MIN_FREQUENCY) * (xs <= config.MAX_FREQUENCY)]
xs = xs[(xs >= config.MIN_FREQUENCY) * (xs <= config.MAX_FREQUENCY)]
xs, ys = dsp.log_partition(xs, ys, config.N_SUBBANDS)
# xs, ys = dsp.rfft_log_partition(y_data,
# subbands=config.N_SUBBANDS,
# window=np.hamming,
# fmin=1,
# fmax=14000)
# # Visualize the result
beats, energy, variance = dsp.beat_detect(ys)
radiate(beats, energy)