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- #!/usr/bin/python2.5
- #
- # Copyright 2014 Olivier Gillet.
- #
- # Author: Olivier Gillet (ol.gillet@gmail.com)
- #
- # Permission is hereby granted, free of charge, to any person obtaining a copy
- # of this software and associated documentation files (the "Software"), to deal
- # in the Software without restriction, including without limitation the rights
- # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- # copies of the Software, and to permit persons to whom the Software is
- # furnished to do so, subject to the following conditions:
- #
- # The above copyright notice and this permission notice shall be included in
- # all copies or substantial portions of the Software.
- #
- # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- # THE SOFTWARE.
- #
- # See http://creativecommons.org/licenses/MIT/ for more information.
- #
- # -----------------------------------------------------------------------------
- #
- # Lookup table definitions.
-
- import numpy
-
- """----------------------------------------------------------------------------
- Vactrol saturation waveshaper
- ----------------------------------------------------------------------------"""
-
- WAVESHAPER_SIZE = 1024
-
- x = numpy.arange(0, WAVESHAPER_SIZE + 1) / float(WAVESHAPER_SIZE)
- x = numpy.exp(-10 * numpy.exp(-13 * x))
- # Add a slight slope
- x += 0.1 * (x ** 0.05)
- x = x - x.min()
- x /= x.max()
- waveforms = [('gompertz', 32767.0 * x)]
-
-
- """----------------------------------------------------------------------------
- Linear to dB, for display
- ----------------------------------------------------------------------------"""
-
- db = numpy.arange(0, 257)
- db[0] = 1
- db[db > 255] = 255
- db = numpy.log2(db / 16.0) * 32768 / 4
- waveforms += [('db', db)]
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