83 lines
2.4 KiB
Python
83 lines
2.4 KiB
Python
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import array
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from ulab import numpy as np
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from math import sin, pi, ceil
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from audiocore import get_buffer
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from synthio import Note, LFO, MathOperation, Synthesizer
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bend_out = array.array("h", [0, 32767])
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bend_in = array.array("h", [32767, 0])
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sweep = array.array("h", [-32767, 32767])
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triangle = array.array("h", [0, 32767, 0, -32767])
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sine = array.array("h", [int(32767 * sin(i * 2 * pi / 600)) for i in range(600)])
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def print_result(*blocks):
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for i in range(48000 / 256):
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print(*lfo_tick(*blocks))
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def mathop_test(kind):
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v = LFO(sweep, rate=1, scale=2, once=True)
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varying_a = kind(v, 2, -3)
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varying_b = kind(-3, v, 2)
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varying_c = kind(2, -3, v)
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print_result(v, varying_a, varying_b, varying_c)
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def synth_test(_gen=None, **kw):
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kw.setdefault("waveform", sine)
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kw.setdefault("channel_count", 1)
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kw.setdefault("sample_rate", 8000)
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def func(gen):
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synth = Synthesizer(**kw)
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t = 0
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dt = 1 / kw["sample_rate"]
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channel_count = kw["channel_count"]
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g = gen(synth)
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blocks = list(next(g))
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for st in g:
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nframes = ceil(st / dt / 256)
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for i in range(nframes):
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samples = np.frombuffer(get_buffer(synth)[1], dtype=np.int16) / 32768.0
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block_values = [b.value for b in blocks]
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for k in range(0, len(samples), channel_count):
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print(t * dt, *(list(samples[k : k + channel_count]) + block_values))
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t += 1
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if _gen is None:
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return func
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else:
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func(_gen)
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def rms(seq):
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return np.sqrt(np.mean(seq**2))
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def synth_test_rms(_gen=None, **kw):
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kw.setdefault("waveform", sine)
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kw.setdefault("channel_count", 1)
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kw.setdefault("sample_rate", 8192)
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def func(gen):
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synth = Synthesizer(**kw)
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t = 0
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dt = 256 / kw["sample_rate"]
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channel_count = kw["channel_count"]
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g = gen(synth)
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blocks = list(next(g))
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for st in g:
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nframes = ceil(st / dt)
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for i in range(nframes):
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samples = np.frombuffer(get_buffer(synth)[1], dtype=np.int16) / 32768.0
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rms_values = [rms(samples[i::2]) for i in range(channel_count)]
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block_values = [b.value for b in blocks]
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print(t * dt, *(rms_values + block_values))
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t += 1
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if _gen is None:
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return func
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else:
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func(_gen)
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