def main():
"""main function"""
# times is array of values at each time slot of the whole wav file
times = wavelib.createtimes(TOTAL_DURATION)
vals = wavelib.normalize(shepard_glissando(times, FREQ_A4 * 2, FREQ_A4))
#plotlib.plot_wave_and_fft(times, vals)
vals = wavelib.play_n(vals, 2)
wavelib.write_wave_file('output/shepard_glissando_down_2x.wav', vals)
vals = wavelib.normalize(shepard_discrete(times, FREQ_A4 * 2, FREQ_A4))
#plotlib.plot_wave_and_fft(times, vals)
vals = wavelib.play_n(vals, 2)
wavelib.write_wave_file('output/shepard_discrete_down_2x.wav', vals)
vals = wavelib.normalize(shepard_glissando(times, FREQ_A4, FREQ_A4 * 2))
#plotlib.plot_wave_and_fft(times, vals)
vals = wavelib.play_n(vals, 2)
wavelib.write_wave_file('output/shepard_glissando_up_2x.wav', vals)
vals = wavelib.normalize(shepard_discrete(times, FREQ_A4, FREQ_A4 * 2))
#plotlib.plot_wave_and_fft(times, vals)
vals = wavelib.play_n(vals, 2)
wavelib.write_wave_file('output/shepard_discrete_up_2x.wav', vals)
def circle_fourths_discrete():
# keep it within one octave, so we'll invert as needed
notemin = NOTE
notemax = NOTE * 2
times = wavelib.createtimes(DURATION, SAMPLE_RATE)
# use harmonic 7th for smoother beatless chord
intervals = [
wavelib.UNISON, wavelib.MAJOR_THIRD, wavelib.PERFECT_FIFTH,
wavelib.HARMONIC_SEVENTH
]
vals = wavelib.zero(times)
for i in range(len(intervals)):
interval = intervals[i]
freq = wavelib.zero(times)
for n in range(len(NOTES)):
note = NOTES[n]
f = NOTES[n] * interval
while f >= notemax:
f = f / 2.0
while f < notemin:
f = f * 2.0
startidx = int(n * NOTE_DURATION * SAMPLE_RATE)
endidx = int(((n + 1) * NOTE_DURATION) * SAMPLE_RATE)
#print i, interval, note, f, startidx, endidx
freq[startidx:endidx] = f
#print n, note, freq
vals += wavelib.sinewave(times, freq)
vals = wavelib.normalize(vals)
vals = wavelib.play_n(vals, 5)
wavelib.write_wave_file('output/circle_fourths_chords.wav', vals)
def main():
"""main function"""
# times is array of values at each time slot of the whole wav file
times = wavelib.createtimes(DURATION)
vals = wavelib.sinewave(times, wavelib.FREQ_A4)
vals = wavelib.normalize(vals)
wavelib.write_wave_file('output/sinewave1.wav', vals)
# wavelib.plot_show(times, vals)
# wavelib.fft_plot(times, vals)
plotlib.plot_wave_and_fft(times, vals)
def main():
"""main function"""
# x is array of values at each time slot of the whole wav file
times = wavelib.createtimes(DURATION, SAMPLE_RATE)
freq = wavelib.glissando_rate(times, FREQUENCY, FREQUENCY_RATE)
vals1 = wavelib.sinewave(times, freq)
vals2 = wavelib.sinewave(times, freq * 3 / 2) # perfect fifth
vals3 = wavelib.sinewave(times, freq * 5 / 4) # perfect third
vals = vals1 + vals2 + vals3
vals = wavelib.normalize(vals)
wavelib.write_wave_file('output/fallingtriad.wav', vals)
def main():
"""main function"""
# x is array of values at each time slot of the whole wav file
times1 = wavelib.createtimes(0.1, SAMPLE_RATE)
times2 = wavelib.createtimes(0.9, SAMPLE_RATE)
# constant frequency
freq = FREQUENCY
vals1 = wavelib.square(times1, freq)
vals2 = wavelib.zero(times2)
vals1 = wavelib.normalize(vals1)
vals = np.concatenate((vals1, vals2))
vals = wavelib.play_n(vals, 10)
#wavelib.write_wave_file('output/alt_dry.wav', vals)
# vals = wavelib.fx_reverb(vals)
# vals = wavelib.normalize(vals)
# wavelib.write_wave_file('output/alt_reverb.wav', vals)
# print vals
# vals = wavelib.comb_filter(vals)
print vals
vals = wavelib.normalize(vals)
wavelib.write_wave_file('output/alt_comb.wav', vals)
def main():
"""main function"""
# x is array of values at each time slot of the whole wav file
times = wavelib.createtimes(DURATION, SAMPLE_RATE)
# constant frequency
freq = FREQUENCY
vals = wavelib.triangle(times, freq)
vals = wavelib.normalize(vals)
wavelib.write_wave_file('output/triangle.wav', vals)
# changing frequency
freq = wavelib.glissando_rate(times, FREQUENCY, FREQUENCY_RATE)
vals = wavelib.triangle(times, freq)
vals = wavelib.normalize(vals)
wavelib.write_wave_file('output/fallingtriangle.wav', vals)
def chord_scale_equal_temperament():
times = wavelib.createtimes(DURATION, SAMPLE_RATE)
intervals = [1, 3, 5, 7]
vals = wavelib.zero(times)
for interval in intervals:
freq = wavelib.zero(times)
for n in range(len(NOTES)):
idx = (n + interval - 1) % len(NOTES)
f = NOTES[idx]
startidx = int(n * NOTE_DURATION * SAMPLE_RATE)
endidx = int(((n + 1) * NOTE_DURATION) * SAMPLE_RATE)
freq[startidx:endidx] = f
vals += wavelib.sinewave(times, freq)
vals = wavelib.normalize(vals)
vals = wavelib.play_n(vals, 3)
wavelib.write_wave_file('output/chord_scale_equal_temperament.wav', vals)
def chord_scale_just_intonation():
times = wavelib.createtimes(DURATION, SAMPLE_RATE)
intervals = [1, 3, 5, 7]
vals = wavelib.zero(times)
for interval in intervals:
freq = wavelib.zero(times)
for n in range(len(NOTES)):
idx = (n + interval - 1) % len(NOTES)
interval_ratio = JI_INTERVALS[idx]
# always use intervals from the root note, so the harmonies are just
f = NOTES[0] * interval_ratio
startidx = int(n * NOTE_DURATION * SAMPLE_RATE)
endidx = int(((n + 1) * NOTE_DURATION) * SAMPLE_RATE)
freq[startidx:endidx] = f
vals += wavelib.sinewave(times, freq)
vals = wavelib.normalize(vals)
vals = wavelib.play_n(vals, 3)
wavelib.write_wave_file('output/chord_scale_just_intonation.wav', vals)
def main():
"""main function"""
# times is array of values at each time slot of the whole wav file
times = wavelib.createtimes(TOTAL_DURATION)
freq = wavelib.glissando_lin(times, wavelib.FREQ_A4, wavelib.FREQ_A3)
vals = wavelib.shepardtone(times, freq, tritone_sine, wavelib.FREQ_A3, 1, 1)
vals = wavelib.normalize(vals)
vals = wavelib.play_n(vals, 5)
wavelib.write_wave_file('output/shepard_tritone_down_5x.wav', vals)
freq = wavelib.glissando_lin(times, wavelib.FREQ_A3, wavelib.FREQ_A4)
vals = wavelib.shepardtone(times, freq, tritone_sine, wavelib.FREQ_A3, 1, 1)
vals = wavelib.normalize(vals)
vals = wavelib.play_n(vals, 5)
wavelib.write_wave_file('output/shepard_tritone_up_5x.wav', vals)
# create a crescendo, fading in from 0 to full volume at the very end
vals = wavelib.fade(vals)
wavelib.write_wave_file('output/shepard_tritone_up_5x_crescendo.wav', vals)