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note wavelength one or less

This commit is contained in:
Frank DeMarco 2019-04-13 01:36:21 -04:00
parent db873683d3
commit e16edef965
1 changed files with 19 additions and 13 deletions
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32
pgfw/Note.py
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@ -1,8 +1,12 @@
# adapted from Pythoven
# https://github.com/phiresky/pythoven
from random import randint
from math import sin, log, pi
from array import array
from pygame.mixer import Sound, get_init, version
from pygame import version
from pygame.mixer import Sound, get_init
class Samples(Sound):
@ -17,7 +21,7 @@ class Samples(Sound):
self.amplitude = (1 << (self.get_sample_width() * 8 - 1)) - 1
def get_sample_width(self):
return abs(get_init()[1] / 8)
return abs(int(get_init()[1] / 8))
def build(self):
pass
@ -89,32 +93,34 @@ class Note(Samples):
def store_triangle_wave(self, samples, period):
amplitude = self.amplitude
coefficient = 4 * amplitude / float(period - 1)
for time in xrange(int(round(period / 2.0))):
y = int((coefficient * time) - amplitude)
samples[time] = y
samples[-time - 1] = y
if period > 1:
coefficient = 4 * amplitude / float(period - 1)
for time in range(int(round(period / 2.0))):
y = int((coefficient * time) - amplitude)
samples[time] = y
samples[-time - 1] = y
def store_saw_wave(self, samples, period):
amplitude = self.amplitude
for time in xrange(period):
samples[time] = int(2 * amplitude / float(period - 1) * time - \
amplitude)
if period > 1:
for time in range(period):
samples[time] = int(2 * amplitude / float(period - 1) * time - \
amplitude)
def store_sine_wave(self, samples, period):
amplitude = self.amplitude
for time in xrange(period):
for time in range(period):
samples[time] = int(round(sin(time / (period / pi / 2)) * \
amplitude))
def store_dirty_wave(self, samples):
amplitude = self.amplitude
for time in xrange(len(samples)):
for time in range(len(samples)):
samples[time] = randint(-amplitude, amplitude)
def store_square_wave(self, samples, period):
amplitude = self.amplitude
for time in xrange(period):
for time in range(period):
if time < period / 2:
samples[time] = amplitude
else: