def __init__(self):
# Register 0 ($400C)
self.length_ctr_halt: bool = False
self.constant_volume: bool = False
self.volume_envelope: int = 0
# Register 1 ($400E)
self.mode: int = 0
self.period: int = 0
# Register 2 ($400F)
self.length_ctr_load: int = 0
self._length_ctr: int = 0
# Nasty tricks will have to be used here...
print("Generating noise wave tables...")
seq_0 = []
sr = 1
prev_val = -1
for i in range(0, 32767 * 2, 2):
val = (sr & 1) ^ 1
if val != prev_val:
seq_0.append((i, val))
seq_0.append((i + 1, val))
feedback = ((sr & 1) ^ ((sr >> 1) & 1)) % 2
sr = (sr >> 1) | (feedback << 14)
seq_1 = []
prev_val = -1
for i in range(0, 93 * 2, 2):
val = (sr & 1) ^ 1
if val != prev_val:
seq_1.append((i, val))
seq_1.append((i + 1, val))
feedback = ((sr & 1) ^ ((sr >> 6) & 1)) % 2
sr = (sr >> 1) | (feedback << 14)
self.table = []
self.table.append(pyo.LinTable(seq_0, 32767 * 2))
self.table.append(pyo.LinTable(seq_1, 93 * 2))
print("...done!")
self.output = pyo.Osc(self.table[0], freq=0, phase=0, interp=1, mul=0)
def __init__(self):
# Register 0: $4000 / $4004
self.duty_cycle: int = 0
self.length_ctr_halt: bool = False
self.constant_volume: bool = False
self.volume_envelope: int = 0
# Register 1: $4001 / $4005
self.sweep_enabled: bool = False
self.sweep_period: int = 0
self.sweep_negate: bool = False
self.sweep_shift: int = 0
# Register 2: $4002 / $4006
self.timer_low: int = 0
# Register 3: $4003 / $4007
self.timer_high: int = 0
self.length_ctr_load = 0
self._length_ctr: int = 0
# Create one table per duty cycle value
self.sequence = [
[(0, 0.), (7, 0.), (8, 1.), (16, 1.), (17, 0.)], # 12.5% Duty
[(0, 0.), (7, 0.), (8, 1.), (24, 1.), (25, 0.)], # 25% Duty
[(0, 0.), (7, 0.), (8, 1.), (40, 1.), (41, 0.)], # 50% Duty
[(0, 1.), (7, 1.), (8, 0.), (16, 0.), (17, 1.)]
] # 75% Duty
self.linear_table = pyo.LinTable(self.sequence[2], size=64)
# Pulse wave output
self.output = pyo.Osc(self.linear_table, 0, interp=1, mul=0)
def __init__(self):
self.trig = pyo.Trig()
decaytable = pyo.LinTable(list=[(0, 1.0), (8191, 0.0)])
self.env = pyo.TrigEnv(self.trig, table=decaytable, dur=0.6, mul=.25)
waveform = pyo.SquareTable()
self.osc = pyo.Osc(waveform, freq=[0.,0.], mul=self.env[0])
self.output = self.osc.out()
def create_synth_sawtooth_line(self):
'''Create a sawtooth wave synthesizer using the PYO
LinTable module.'''
self.log.debug('creating sawtooth synth [lintable]')
t = pyo.LinTable([(0, 1), (8191, -1)])
return pyo.Osc(table=t,
mul=0,
freq=[FREQ_C4, FREQ_C4])
def __init__(self):
self.trig = pyo.Trig()
decaytable = pyo.LinTable(list=[(0,0), (100, 1.0), (8191, 0.0)])
self.env = pyo.TrigEnv(self.trig, table=decaytable, dur=0.6, mul=[0,0])
self.spectrum = [1.]+[0.]*15 # 16 total
self.waveform = pyo.HarmTable(self.spectrum)
self.osc = pyo.Osc(self.waveform, freq=[0.,0.], mul=self.env)
self.filter = pyo.Biquad(self.osc, freq=[300.,300.], type=2, q=2.)
self.output = self.filter.out()
def create_synth_triangle_line(self):
'''Create a triangle wave synthesizer using the PYO
LinTable module.'''
self.log.debug('creating triangle synth [lintable]')
t = pyo.LinTable([(0, 0), (8192//4, 1), (8192//2, 0),
(3*(8192//4), -1), (8191, 0)])
return pyo.Osc(table=t,
mul=0,
freq=[FREQ_C4, FREQ_C4])
def __init__(self):
self.trig = pyo.Trig()
decaytable = pyo.LinTable(list=[(0,0), (100, 1.0), (8191, 0.0)])
self.env = pyo.TrigEnv(self.trig, table=decaytable, dur=0.3, mul=.25)
self.osc = pyo.Sine(freq=[0.,0.], mul=self.env[0])
self.output = self.osc.out()
def __init__(self, freq):
self.trig = pyo.Trig()
decaytable = pyo.LinTable(list=[(0, 1.0), (8191, 0.0)])
self.env = pyo.TrigEnv(self.trig, table=decaytable, dur=0.6, mul=0.2)
self.osc = pyo.Sine(freq=freq, mul=self.env).mix(2)
self.output = self.osc.out()