Synth_test_serialized.py

import os, math, wave, array
import sound
import ui
import photos
import console
from scene import *
import time



def saw(t):
	return (t*(65534.0/44100.0))%65534.0 - 32767.0

name= 'serialize_non_real_time_synth.wav'
f= 440*math.pow(2, (30-30.0)/12.0)
duration = 5
volume =50
out = array.array('h') # signed short integer (-32768 to 32767) data
sampleRate = 44100.0 # of samples per second (standard)
numChan = 1 # of channels (1: mono, 2: stereo)
dataSize = 2 # 2 bytes because of using signed short integers => bit depth = 16
numSamples= int(sampleRate * duration)
filterbuffers = array.array('h')
for i in range(16):
	filterbuffers.append(0)
n= 44100.0/60.0
t=0
fade=0
notes=[0.0,0.0,0.0]
q=0.8
tps=time.time()
print(0)
for i in range(numSamples):
	if i<numSamples/2:
		fade+=0.01*(1-fade)
	else:
		fade*=0.99
	x= (i%n)/n
	t+=f
	#Chords/Unison:
	notes[0] = (0.25*saw(t)+0.25*saw(0.2+t*1.011)+0.25*saw(0.479+t*1.007)+0.25*saw(0.753+t*1.003))*0.5
	notes[1] = (0.25*saw(2*t)+0.25*saw(0.2+2*t*1.011)+0.25*saw(0.479+2*t*1.007)+0.25*saw(0.753+2*t*1.003)) *0.5
	notes[2] = (0.25*saw(1.5*t)+0.25*saw(0.2+1.5*t*1.011)+0.25*saw(0.479+1.5*t*1.007)+0.25*saw(0.753+1.5*t*1.003)) *0.5
	sample= 0.33*fade*(notes[0]+notes[1]+notes[2])
	#Filter:
	for j in range(16):
		filterbuffers[j]=int(q*filterbuffers[j]+(1-q)*sample)
		sample=filterbuffers[j]
	
	out.append(int(sample))
	#Delay/Reverb:
	'''
	if i>= int(sampleRate*0.5):
		out[2*i]+= int(0.75* out[2*i-int(sampleRate)])
		out[2*i+1]+= int(0.8* out[2*i+1-int(0.8*sampleRate)])
	'''
print(time.time()-tps)

f = wave.open(name, 'w')
f.setparams((numChan, dataSize, sampleRate, numSamples, "NONE", "Uncompressed"))
f.writeframes(out.tostring())
f.close()
print(time.time()-tps)
sound.play_effect(name)
os.remove(name)