📅  最后修改于: 2022-03-11 14:47:00.977000             🧑  作者: Mango
import math #import needed modules
import pyaudio #Sudo apt-get install python-pyaudio
PyAudio = pyaudio.PyAudio #initialize pyaudio
#See https://en.wikipedia.org/wiki/Bit_rate#Audio
BITRATE = 16000 #number of frames per second/frameset.
FREQUENCY = 500 #Hz, waves per second, 261.63=C4-note.
LENGTH = 1 #seconds to play sound
if FREQUENCY > BITRATE:
BITRATE = FREQUENCY+100
NUMBEROFFRAMES = int(BITRATE * LENGTH)
RESTFRAMES = NUMBEROFFRAMES % BITRATE
WAVEDATA = ''
#generating wawes
for x in xrange(NUMBEROFFRAMES):
WAVEDATA = WAVEDATA+chr(int(math.sin(x/((BITRATE/FREQUENCY)/math.pi))*127+128))
for x in xrange(RESTFRAMES):
WAVEDATA = WAVEDATA+chr(128)
p = PyAudio()
stream = p.open(format = p.get_format_from_width(1),
channels = 1,
rate = BITRATE,
output = True)
stream.write(WAVEDATA)
stream.stop_stream()
stream.close()
p.terminate()