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update 19

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This commit is contained in:
Connor Olding 2015-11-05 04:04:42 -08:00
parent aadc623326
commit 96f3250148
2 changed files with 5 additions and 3 deletions
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6
lib/__init__.py
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@ -53,9 +53,9 @@ def c_render(cascade, precision=4096):
def c_render2(xs, cascade, phase=False): def c_render2(xs, cascade, phase=False):
"""c_render optimized and specifically for first/second-order filters""" """c_render optimized and specifically for first/second-order filters"""
if phase: if phase:
return c_render(xs, cascade, mode='phase') return c_render3(xs, cascade, mode='phase')
else: else:
return c_render(xs, cascade, mode='magnitude') return c_render3(xs, cascade, mode='magnitude')
def c_render3(xs, cascade, mode='magnitude'): def c_render3(xs, cascade, mode='magnitude'):
"""c_render optimized and specifically for first/second-order filters""" """c_render optimized and specifically for first/second-order filters"""
@ -71,7 +71,7 @@ def c_render3(xs, cascade, mode='magnitude'):
elif mode == 'phase' or mode == 'group delay': elif mode == 'phase' or mode == 'group delay':
fmt = '-arctan2(imag({0}), real({0}))' # gross fmt = '-arctan2(imag({0}), real({0}))' # gross
else: else:
raise Exception("c_render(): unknown mode: {}".format(mode)) raise Exception("c_render3(): unknown mode: {}".format(mode))
ys = np.zeros(len(xs)) ys = np.zeros(len(xs))
for f in cascade: for f in cascade:

2
lib/piir.py
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@ -4,6 +4,8 @@ import numpy as np
# coefficients via https://gist.github.com/notwa/3be345efb6c97d757398 # coefficients via https://gist.github.com/notwa/3be345efb6c97d757398
# which is a port of http://ldesoras.free.fr/prod.html#src_hiir # which is a port of http://ldesoras.free.fr/prod.html#src_hiir
# i don't think my terminology is correct.
halfband_c = {} halfband_c = {}
halfband_c['16,0.1'] = [ halfband_c['16,0.1'] = [