eurorack/stereo_mix/resources/lookup_tables.py

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2019-12-03 23:00:54 +00:00
import numpy
lookup_tables = []
lookup_tables_32 = []
# linear to exponential conversion
values = []
size = 1024.0
for x in range(int(size)):
if x == 0:
values.append(0)
else:
values.append((x ** 2) / x)
lookup_tables.append(('linear_to_exp', values))
# Left pan Lookup table
l_pan = numpy.arange(0, 1024)
r_pan = numpy.arange(0, 1024)
l_pan = numpy.sin((l_pan / 1024.0) * (numpy.pi / 2.0))
r_pan = numpy.cos((r_pan / 1024.0) * (numpy.pi / 2.0))
l_pan = numpy.round(l_pan * 1024)
r_pan = numpy.round(r_pan * 1024)
r_pan[1023] = 0 # dirty fix
lookup_tables.append(('left_sin_pan', l_pan))
lookup_tables.append(('right_cos_pan', r_pan))