'''
Module to play WAV files using PyAudio.
Author: Vasudev Ram - http://jugad2.blogspot.com
Adapted from the example at:
https://people.csail.mit.edu/hubert/pyaudio/#docs
PyAudio Example: Play a wave file.
'''
import pyaudio
import wave
import sys
import os.path
import time
CHUNK_SIZE = 1024
def play_wav(wav_filename, chunk_size=CHUNK_SIZE):
'''
Play (on the attached system sound device) the WAV file
named wav_filename.
'''
try:
print 'Trying to play file ' + wav_filename
wf = wave.open(wav_filename, 'rb')
except IOError as ioe:
sys.stderr.write('IOError on file ' + wav_filename + '\n' + \
str(ioe) + '. Skipping.\n')
return
except EOFError as eofe:
sys.stderr.write('EOFError on file ' + wav_filename + '\n' + \
str(eofe) + '. Skipping.\n')
return
# Instantiate PyAudio.
p = pyaudio.PyAudio()
# Open stream.
stream = p.open(format=p.get_format_from_width(wf.getsampwidth()),
channels=wf.getnchannels(),
rate=wf.getframerate(),
output=True)
data = wf.readframes(chunk_size)
while len(data) > 0:
stream.write(data)
data = wf.readframes(chunk_size)
# Stop stream.
stream.stop_stream()
stream.close()
# Close PyAudio.
p.terminate()
def usage():
prog_name = os.path.basename(sys.argv[0])
print "Usage: {} filename.wav".format(prog_name)
print "or: {} -f wav_file_list.txt".format(prog_name)
def main():
lsa = len(sys.argv)
if lsa < 2:
usage()
sys.exit(1)
elif lsa == 2:
play_wav(sys.argv[1])
else:
if sys.argv[1] != '-f':
usage()
sys.exit(1)
with open(sys.argv[2]) as wav_list_fil:
for wav_filename in wav_list_fil:
# Remove trailing newline.
if wav_filename[-1] == '\n':
wav_filename = wav_filename[:-1]
play_wav(wav_filename)
time.sleep(3)
if __name__ == '__main__':
main()
Then I ran it as follows:$ python pyaudio_play_wav.py chimes.wav$ python pyaudio_play_wav.py chord.wav$ python pyaudio_play_wav.py -f wav_file_list.txtwhere wav_file_list.txt contained these two lines:
chimes.wav chord.wavWorked okay and played the specified WAV files. I also ran it a few times with test cases that should trigger errors - the error cases that the current code handles. This worked okay too. You can use one or more WAV files to try out the program. Other than modules in the Python stdlib, the only dependency is PyAudio, which you can install with pip. - Enjoy. - Vasudev Ram - Online Python training and programming Signup to hear about new products and services I create. Posts about Python Posts about xtopdf My ActiveState recipes
import pyttsx
engine = pyttsx.init()
engine.setProperty('rate', 70)
voices = engine.getProperty('voices')
for voice in voices:
print "Using voice:", repr(voice)
engine.setProperty('voice', voice.id)
engine.say("Hi there, how's you ?")
engine.say("A B C D E F G H I J K L M")
engine.say("N O P Q R S T U V W X Y Z")
engine.say("0 1 2 3 4 5 6 7 8 9")
engine.say("Sunday Monday Tuesday Wednesday Thursday Friday Saturday")
engine.say("Violet Indigo Blue Green Yellow Orange Red")
engine.say("Apple Banana Cherry Date Guava")
engine.runAndWait()
# test_micawber.py
import micawber
# load up rules for some default providers, such as youtube and flickr
providers = micawber.bootstrap_basic()
# Fetch the data for 3 video URLs
for url in [ 'http://www.youtube.com/watch?v=9efHwnFAkuA',
'http://www.youtube.com/watch?v=mWB3oh1GPdo',
'http://www.youtube.com/watch?v=UYGc9joeAD0' ]:
retval = providers.request(url)
for key in ['type', 'title', 'url', 'author_name',
'author_url', 'provider_name', 'provider_url', 'height',
'width', 'thumbnail_url']:
print key, ":", retval[key]
print
# EOF
You can run it like this:python test_micawber.pyAnd here is its output:
type : video title : Andres Segovia - Asturias url : http://www.youtube.com/watch?v=9efHwnFAkuA author_name : ByTheSPiRiTs author_url : http://www.youtube.com/user/ByTheSPiRiTs provider_name : YouTube provider_url : http://www.youtube.com/ height : 344 width : 459 thumbnail_url : http://i1.ytimg.com/vi/9efHwnFAkuA/hqdefault.jpg type : video title : In Python We Trust url : http://www.youtube.com/watch?v=mWB3oh1GPdo author_name : OreillyMedia author_url : http://www.youtube.com/user/OreillyMedia provider_name : YouTube provider_url : http://www.youtube.com/ height : 270 width : 480 thumbnail_url : http://i1.ytimg.com/vi/mWB3oh1GPdo/hqdefault.jpg type : video title : Luisa Fernandez - Granada url : http://www.youtube.com/watch?v=UYGc9joeAD0 author_name : Dany Massart author_url : http://www.youtube.com/user/DJCOOLDANY provider_name : YouTube provider_url : http://www.youtube.com/ height : 344 width : 459 thumbnail_url : http://i1.ytimg.com/vi/UYGc9joeAD0/hqdefault.jpg
# pysynth-ddccbag.py
import pysynth
test = ( ('d', 4), ('d', 4), ('c', 4), ('c', 4), ('b', 4), ('a', 4), ('g', 3) )
pysynth.make_wav(test, fn = "ddccbag.wav")
For some reason the last note seems to get partially cut off on my PC. Not sure whether that is a bug or a feature :-) or something to do with my hardware. Maybe the latter, since I'm using my laptop's built-in speakers.python pysynth-ddccbag.py
Saw this recently on the Google Code blog
Tried it out some, it's quite cool and useful, IMO:
New Text-to-Speech API for Chrome extensions
As the title of the post indicates, this is about a new Text To Speech (TTS) API for Google Chrome extensions and apps.
Though the blog post title only mentions the API, the post also has links to TTS (i.e. talking) apps for Chrome. You can install them from the Chrome Web Store. There are also links to a couple of other "voices" that can be used for all such Chrome TTS (Text To Speech) apps or extensions. Even without installing the voices, you may be able to run TTS apps using the native voice support of your operating system
I tried out the TTS Demo and the Talking Alarm Clock - both were good.
The Talking Alarm Clock in particular can be useful. Apart from being useful, the audio alarm that goes off when the alarm time is reached, can be played in different ways - e.g., as a traditional ringing alarm clock, a digital alarm clock, a cuckoo clock, a grandfather clock, a "morning in the forest" tune, etc. Pretty cool ...
I had developed a simple utility something roughly like it in Delphi a while earlier
Posted via email
- Vasudev Ram @ Dancing Bison
PyAudio and PortAudio are I/O libraries for sound (i.e. audio).
I'm stretching the analogy a bit here, but they made me think:
"... like ODBC for sound". (*)
PyAudio is a Python interface to PortAudio.
PyAudio:
http://people.csail.mit.edu/hubert/pyaudio/
Excerpt:
[ PyAudio provides Python bindings for PortAudio, the cross-platform audio I/O library. With PyAudio, you can easily use Python to play and record audio on a variety of platforms. ]
PortAudio:
http://www.portaudio.com/
PortAudio apps:
http://www.portaudio.com/apps.html
I installed PyAudio for Windows. Installation was trivial. It also automatically installed the PortAudio DLL (actually, the .pyd file).
I then tried a PyAudio Python program from the docs to play a small .WAV file. It worked.
(*) That's because PyAudio and PortAudio support both:
a) different platforms (Windows, Linux, Mac, UNIX)
b) different "Host APIs" on the same platform, where the different Host API's have, obviously, different API's, but PortAudio (and hence PyAudio) hide those differences behind a uniform interface (to some extent).
UPDATE: If you interested in checking out other Python multimedia libraries, you may also like to read this earlier post of mine about pyglet:
Playing an MP3 with pyglet and Python is easy
pyglet has some of the same benefits as PyAudio - cross-platform, easy to use, etc.
Posted via email
- Vasudev Ram @ Dancing Bison
import pyglet
music = pyglet.resource.media('your_file.mp3')
music.play()
pyglet.app.run()
