blob: 8dccf5fed6cc23e433cd3131fba2194f74a93022 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
# py/pyext - python script objects for PD and MaxMSP
#
# Copyright (c) 2002-2005 Thomas Grill (gr@grrrr.org)
# For information on usage and redistribution, and for a DISCLAIMER OF ALL
# WARRANTIES, see the file, "license.txt," in this distribution.
#
"""This is an example script for the py/pyext signal support.
For numarray see http://numeric.scipy.org
It will probably once be replaced by Numeric(3)
"""
try:
import pyext
except:
print "ERROR: This script must be loaded by the PD/Max py/pyext external"
try:
import psyco
psyco.full()
print "Using JIT compilation"
except:
# don't care
pass
import sys,math
try:
import numarray
except:
print "Failed importing numarray module:",sys.exc_value
class gain(pyext._class):
"""Just a simple gain stage"""
gain = 0
def _signal(self):
# Multiply input vector by gain and copy to output
self._outvec(0)[:] = self._invec(0)*self.gain
class pan(pyext._class):
"""Stereo panning"""
def __init__(self):
self.float_1(0.5)
def float_1(self,pos):
"""pos ranges from 0 to 1"""
x = pos*math.pi/2
self.fl = math.cos(x)
self.fr = math.sin(x)
def _signal(self):
# Multiply input vector by gain and copy to output
iv = self._invec(0)
# first process right output channel because left one could be
# identical to input
# we could also test with 'self._outvec(1)[:] is iv'
self._outvec(1)[:] = iv*self.fr
self._outvec(0)[:] = iv*self.fl
|