def player(self, value):
# Also initialize playing thread
self._player = value
self.volume_ctrl = ControlStream(.2)
self.carrier_ctrl = ControlStream(220)
self.mod_ctrl = ControlStream(440)
sound = sinusoid(freq=self.carrier_ctrl * Hz,
phase=sinusoid(self.mod_ctrl * Hz)) * self.volume_ctrl
self.playing_thread = player.play(sound)
def player(self, value):
# Also initialize playing thread
self._player = value
self.volume_ctrl = ControlStream(.2)
self.carrier_ctrl = ControlStream(220)
self.mod_ctrl = ControlStream(440)
sound = sinusoid(freq=self.carrier_ctrl * Hz,
phase=sinusoid(self.mod_ctrl * Hz)
) * self.volume_ctrl
self.playing_thread = player.play(sound)
def ks_synth(freq):
"""
Synthesize the given frequency into a Stream by using a model based on
Karplus-Strong.
"""
ks_mem = (sum(lz.sinusoid(x * freq) for x in [1, 3, 9]) +
lz.white_noise() + lz.Stream(-1, 1)) / 5
return lz.karplus_strong(freq, memory=ks_mem)
def ks_synth(freq):
"""
Synthesize the given frequency into a Stream by using a model based on
Karplus-Strong.
"""
ks_mem = (sum(lz.sinusoid(x * freq) for x in [1, 3, 9]) +
lz.white_noise() + lz.Stream(-1, 1)) / 5
return lz.karplus_strong(freq, memory=ks_mem)
def partial():
smix.add(octave_duration, partial_cached()) # Next track/partial event
# Octave-based frequency values sequence
scale = 2 ** line(duration, finish=True)
partial_freq = (scale - 1) * (max_freq - min_freq) + min_freq
# Envelope to "hide" the partial beginning/ending
env = [k ** 2 for k in window.hamming(int(round(duration)))]
# The generator, properly:
for el in env * sinusoid(partial_freq) / noctaves:
data.append(el)
yield el
def partial():
smix.add(octave_duration, partial_cached()) # Next track/partial event
# Octave-based frequency values sequence
scale = 2**line(duration, finish=True)
partial_freq = (scale - 1) * (max_freq - min_freq) + min_freq
# Envelope to "hide" the partial beginning/ending
env = [k**2 for k in window.hamming(int(round(duration)))]
# The generator, properly:
for el in env * sinusoid(partial_freq) / noctaves:
data.append(el)
yield el
def unpitched_low(dur, idx):
"""
Non-harmonic bass/lower frequency sound as a list (due to memoization).
Parameters
----------
dur:
Duration, in samples.
idx:
Zero or one (integer), for a small difference to the sound played.
Returns
-------
A list with the synthesized note.
"""
env = sinusoid(lag2freq(dur * 2)).limit(dur)**2
freq = 40 + 20 * sinusoid(1000 * Hz, phase=uniform(-pi, pi)) # Hz
result = (low_table(freq * Hz) + low_table(freq * 1.1 * Hz)) * env * .5
return list(result)
def unpitched_low(dur, idx):
"""
Non-harmonic bass/lower frequency sound as a list (due to memoization).
Parameters
----------
dur:
Duration, in samples.
idx:
Zero or one (integer), for a small difference to the sound played.
Returns
-------
A list with the synthesized note.
"""
env = sinusoid(lag2freq(dur * 2)).limit(dur) ** 2
freq = 40 + 20 * sinusoid(1000 * Hz, phase=uniform(-pi, pi)) # Hz
result = (low_table(freq * Hz) + low_table(freq * 1.1 * Hz)) * env * 0.5
return list(result)
LPTV (Linear Periodically Time Variant) filter example (a.k.a. PLTV)
"""
from audiolazy import sHz, sinusoid, Stream, AudioIO, z, pi, chunks
import time, sys
# Basic initialization
rate = 44100
s, Hz = sHz(rate)
# Some time-variant coefficients
cycle_a1 = [.1, .2, .1, 0, -.1, -.2, -.1, 0]
cycle_a2 = [.1, 0, -.1, 0, 0]
a1 = Stream(*cycle_a1)
a2 = Stream(*cycle_a2) * 2
b1 = sinusoid(18 * Hz) # Sine phase
b2 = sinusoid(freq=7 * Hz, phase=pi / 2) # Cosine phase
# The filter
filt = (1 + b1 * z**-1 + b2 * z**-2 + .7 * z**-5)
filt /= (1 - a1 * z**-1 - a2 * z**-2 - .1 * z**-3)
# A really simple input
input_data = sinusoid(220 * Hz)
# Let's play it!
api = sys.argv[1] if sys.argv[1:] else None # Choose API via command-line
chunks.size = 1 if api == "jack" else 16
with AudioIO(api=api) as player:
th = player.play(input_data, rate=rate)
time.sleep(1) # Wait a sec
LPTV (Linear Periodically Time Variant) filter example (a.k.a. PLTV) """ from audiolazy import sHz, sinusoid, Stream, AudioIO, z, pi import time # Basic initialization rate = 44100 s, Hz = sHz(rate) # Some time-variant coefficients cycle_a1 = [.1, .2, .1, 0, -.1, -.2, -.1, 0] cycle_a2 = [.1, 0, -.1, 0, 0] a1 = Stream(*cycle_a1) a2 = Stream(*cycle_a2) * 2 b1 = sinusoid(18 * Hz) # Sine phase b2 = sinusoid(freq=7 * Hz, phase=pi/2) # Cosine phase # The filter filt = (1 + b1 * z ** -1 + b2 * z ** -2 + .7 * z ** -5) filt /= (1 - a1 * z ** -1 - a2 * z ** -2 - .1 * z ** -3) # A really simple input input_data = sinusoid(220 * Hz) # Let's play it! with AudioIO() as player: th = player.play(input_data, rate=rate) time.sleep(1) # Wait a sec th.stop() time.sleep(1) # One sec "paused"
def ks_mem(freq):
""" Alternative memory for Karplus-Strong """
return (sum(lz.sinusoid(x * freq) for x in [1, 3, 9]) +
lz.white_noise() + lz.Stream(-1, 1)) / 5