Created
December 4, 2016 20:34
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Play sinusoids with pygame/numpy
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| import pygame | |
| import numpy as np | |
| from pprint import pprint | |
| import time | |
| import math | |
| notes = { | |
| 'g3':196.00, | |
| 'gs3':207.65, | |
| 'a3':220.00, | |
| 'as3':233.08, | |
| 'b3':246.94, | |
| 'c4': 261.63, | |
| 'cs4': 277.18, | |
| 'd4': 293.66, | |
| 'ds4': 311.13, | |
| 'e4': 329.63, | |
| 'f4': 349.23, | |
| 'fs4': 369.99, | |
| 'g4': 392.00, | |
| 'gs4': 415.30, | |
| 'a4': 440.00, | |
| 'as4': 466.16, | |
| 'b4': 493.88, | |
| 'c5': 523.25, | |
| 'cs5': 554.37, | |
| 'd5': 587.33, | |
| 'ds5': 622.25, | |
| 'e5': 659.25, | |
| 'f5': 698.46, | |
| 'fs5': 739.99, | |
| 'g5': 783.99, | |
| 'gs5': 830.61, | |
| 'a5': 880.00, | |
| 'as5': 932.33, | |
| 'b5': 987.77, | |
| 'c6': 1046.50 | |
| } | |
| def getSound(freq=261.63): | |
| length = np.int(np.ceil(48000/freq)) | |
| samples = np.zeros(length, dtype=np.int16) | |
| for i in range(0,length): | |
| samples[i] = np.uint16((32768/4)*np.sin(i*2*np.pi*(freq/48000))) | |
| sound = pygame.mixer.Sound(samples) | |
| return sound | |
| pygame.mixer.init(48000, 16, 1, 1024) | |
| sounds = {} | |
| for k, v in notes.items(): | |
| sounds[k] = getSound(freq=v) | |
| print("Starting") | |
| series = ['c4', 'e4', 'g5', 'b5', 'g4', 'b4', 'd5', 'f4', 'as4', 'd4', 'f5', 'a3', 'c4', '', '', '', ''] | |
| j = 0 | |
| duration = 0.5 | |
| for i,s in enumerate(series): | |
| if not s == '': | |
| print("Starting " + str(i)) | |
| sounds[s].play(loops=-1) | |
| if i > 2: | |
| print("Stopping " + str(j)) | |
| sounds[series[j]].stop() | |
| j += 1 | |
| time.sleep(duration) |
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