Re: creating status sounds in python
[[wow]], that is a great explination, I can totally see the sounds now! So, in the example, why is there a call to numpy and what is special about the arrays they are calling?
btw, here is the working sound file with comments. Import this module and use it like:
import beap_sound
sound = beap_sound.sound_creator(duration=1.0, frequency=440, left=0.7, right=0.3)
sound.play()
pygame.time.wait(1500)
#our imports, numpy is required for pygame.sndarray to run and math is used for the sin and pi functions
import pygame, numpy, math
def sound_creator(duration=1.0, frequency=440, left=0.5, right=0.5, sr=44100, bits=16):
#initialize the pygame's mixer module with default values.
pygame.mixer.init(frequency = sample_rate, size = -bits, channels = 2)
#This gives a number of samples in our file. Don't try to print this number, it is really big! I'm not sure why the "round" function #is there
n_samples = int(round(duration*sample_rate))
#This is creating our lovely array. I'm not sure what all of it means, but the n_samples is the amount of items in our list (That #really big number that we got above!) and the 2 there means that we are wanting 2 channels. I don't know what the other #number is.
buf = numpy.zeros((n_samples, 2), dtype = numpy.int16)
#This is making sure our intijure buffer formats are inbetween -1 and 1, it is making sure we don't have a clipping sound
max_sample = 2**(bits - 1) - 1
#Now we are appending samples to the array we made above. I'm not sure why we didn't just do this with "buffer = [[], []]" #above, but what ever!
for i in xrange(n_samples):
#This is where we create the type of wave it is.
#t is the time we have in seconds
t = i/float(sr)
#This is appending the wave type numbers to the first array which on 2 channels is the left
buf[i][0] = int(round(max_sample*left*math.sin(2*math.pi*frequency*t)))
#Now we are doing the same to the second array which is the right
buf[i][1] = int(round(max_sample*right*math.sin(2*math.pi*frequency*t)))
# Now we are creating the sound through pygame's sndarray module
sound = pygame.sndarray.make_sound(buf)
#Now we are returning a sound that is the same as a sound object in the mixer module
return sound
#This will only run if you run this module, it is a nice example that will play quietly in the left speaker
if __name__ == ('__main__'):
#Change these values to suit your needs
duration = 1.0 #in seconds
sample_rate = 44100
bits = 16
frequency = 440
left = 0.1
right = 0.03
#Sound is a tipical sound file like "bird.ogg"
sound = sound_creator(duration, frequency, left, right, sample_rate, bits)
sound.play()
#If you don't wait the program will exit. If you wait the duration of the sound you will get some popping when the sound is #done. That is why I'm waiting 1.5 seconds, rather than 1.
pygame.time.wait(1500)
pygame.mixer.quit()_______________________________________________ Audiogames-reflector mailing list Audiogames-reflector@sabahattin-gucukoglu.com https://sabahattin-gucukoglu.com/cgi-bin/mailman/listinfo/audiogames-reflector
