84 lines
3 KiB
Python
84 lines
3 KiB
Python
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from .util import *
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from .bq import *
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import numpy as np
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_bq2a = 1/.76536686473017945
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_bq2b = 1/1.8477590650225735
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_bq2a_bw = isqrt2/_bq2a
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_bq2b_bw = isqrt2/_bq2b
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cascades = {
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'1770': [
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(1501, HS2(toA(4), toQ(1)), 0),
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(38.135457, HP2(0, 0.5003268), np.log10(1.004995)*20),
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],
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# "neon pink"
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'raw': [
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nf(LP1, 20, 0, 1, 29),
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nf(HS1, 800, 12, 1, 0),
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( 45, HP2( 0, 1.32), 0.5), # roughly estimates
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( 45, HP2( 0, 0.54), 0.5), # a 4-pole butterworth highpass
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nf(LP2, 14000, 0, 1.33, 0),
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],
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# like neon pink but for feeding into RMS
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'raw2': [
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(10000, HP1(0,0), 26),
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( 750, HS2(toA(-10), toQ(1.33)), 0),
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( 45, HP2(0, 1.32), 0.5),
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( 45, HP2(0, 0.54), 0.5),
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(14000, LP2(0, toQ(1.33)), 0),
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( 250, PE2(toA(3), toQ(1.33)), -1),
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( 4000, PE2(toA(3), toQ(1.33)), -1),
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],
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# loosely based on the equal loudness contour at 60dB or something
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'raw_ELC': [
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( 40, HP2(0, toQ(1.33)), 0),
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( 400, HP1(0,0), 6),
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( 1400, PE2(toA(-3), toQ(1.33)), 1),
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( 4000, PE2(toA(5), toQ(1.00)),-1.5),
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( 4000, LP2(0, toQ(1.33)), 1.5),
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],
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# here's the ideas written out:
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# low (<40) freqs dont contribute much to ears (feel doesnt count.)
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# high (>14000) freqs are mostly unheard. 14000 is the top for someone with bad hearing.
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# 750 Hz isn't too painful to the ears, but cutting them would give
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# overly-produced songs not enough gain to hear vocals, so keep it flat.
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# we're supposedly less sensitive to 1400 Hz, but i need to
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# boost high freqs so the RMS even catches it, so keep that flat too.
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'raw3': [
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( 40, HP2(0, toQ(1.33)), 0.0),
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( 400, HP1(0, 0), 4.5),
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( 1400, PE2(toA(-2), toQ(1.33)), 0.0),
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( 8000, PE2(toA(3), toQ(1.00)), 0.0),
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(10000, LP2(0, toQ(0.50)),-0.5),
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],
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'tilt_test': [
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(10000, HP1(0,0), 30),
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( 1000, HS1(toA(-16), 0), 1.5),
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( 40, HP2(0, toQ(1.00)), 0.0),
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(10000, LP1(0, 0), 0.0),
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],
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# tested against your 227 top-rated songs
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'np2': [
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nf(LP1, 20, 0, 1, 32),
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nf(HS1, 800, 9, 1, -4.5),
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nf(LP2, 14000, 0, 1.33, 0),
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nf(LP2, 14000, 0, 0.90, 0),
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nf(HP2, 77, 0, 1.00, 0),
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nf(LS2, 38, -9, 1.00, 0),
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nf(PE2, 64, 4.5, 1.20, 0),
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],
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# side channel
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'np2s': [
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nf(LP1, 20, 0, 1, 32),
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nf(HS1, 800, 9, 1, -4.5),
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nf(LP2, 14000, 0, 1.33, 0),
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nf(HP2, 90, 0, 1.11, 0),
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nf(PE2, 30, -9.5, 1.00, 0),
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#(17500, LP2(0, _bq2a), 0),
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#(17500, LP2(0, _bq2b), 0),
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],
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}
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