You can use the 3rd party pywin32 library along with the Microsoft Speech SDK to perform voice recognition in Python.
1) Download and install the
pywin32 library.
2) Download and install the
Microsoft Speech SDK.
3) Run the makepy script and select the
Microsoft Speech Object Library from the list and click OK. The makepy script should be located in your "[Vizard]\bin\lib\site-packages\win32com\client" folder.
4) You should now be able to run the following sample script which allows you to change the background color by saying the name of the color:
Code:
from win32com.client import constants
import win32com.client
import pythoncom
VOICE_COLORS = { "Red" : viz.RED
,"Green" : viz.GREEN
,"Blue" : viz.BLUE
,"Yellow" : viz.YELLOW
,"White" : viz.WHITE
,"Black" : viz.BLACK
,"Purple" : viz.PURPLE
,"Orange" : viz.ORANGE }
"""Sample code for using the Microsoft Speech SDK 5.1 via COM in Python.
Requires that the SDK be installed (it's a free download from
http://www.microsoft.com/downloads/details.aspx?FamilyId=5E86EC97-40A7-453F-B0EE-6583171B4530&displaylang=en
and that MakePy has been used on it (in PythonWin,
select Tools | COM MakePy Utility | Microsoft Speech Object Library 5.1).
After running this, then saying "One", "Two", "Three" or "Four" should
display "You said One" etc on the console. The recognition can be a bit
shaky at first until you've trained it (via the Speech entry in the Windows
Control Panel."""
class SpeechRecognition:
""" Initialize the speech recognition with the passed in list of words """
def __init__(self, wordsToAdd):
# For speech recognition - first create a listener
self.listener = win32com.client.Dispatch("SAPI.SpSharedRecognizer")
# Then a recognition context
self.context = self.listener.CreateRecoContext()
# which has an associated grammar
self.grammar = self.context.CreateGrammar()
# Do not allow free word recognition - only command and control
# recognizing the words in the grammar only
self.grammar.DictationSetState(0)
# Create a new rule for the grammar, that is top level (so it begins
# a recognition) and dynamic (ie we can change it at runtime)
self.wordsRule = self.grammar.Rules.Add("wordsRule", constants.SRATopLevel + constants.SRADynamic, 0)
# Clear the rule (not necessary first time, but if we're changing it
# dynamically then it's useful)
self.wordsRule.Clear()
# And go through the list of words, adding each to the rule
[ self.wordsRule.InitialState.AddWordTransition(None, word) for word in wordsToAdd ]
# Set the wordsRule to be active
self.grammar.Rules.Commit()
self.grammar.CmdSetRuleState("wordsRule", 1)
# Commit the changes to the grammar
self.grammar.Rules.Commit()
# And add an event handler that's called back when recognition occurs
self.eventHandler = ContextEvents(self.context)
"""The callback class that handles the events raised by the speech object.
See "Automation | SpSharedRecoContext (Events)" in the MS Speech SDK
online help for documentation of the other events supported. """
class ContextEvents(win32com.client.getevents("SAPI.SpSharedRecoContext")):
"""Called when a word/phrase is successfully recognized -
ie it is found in a currently open grammar with a sufficiently high
confidence"""
def OnRecognition(self, StreamNumber, StreamPosition, RecognitionType, Result):
newResult = win32com.client.Dispatch(Result)
print "You said: ",newResult.PhraseInfo.GetText()
viz.clearcolor(VOICE_COLORS[newResult.PhraseInfo.GetText()])
if __name__=='__main__':
speechReco = SpeechRecognition(VOICE_COLORS.keys())
import viz
viz.go()
import vizact
vizact.ontimer(0,pythoncom.PumpWaitingMessages)
speaker = win32com.client.Dispatch("SAPI.SpVoice")
speaker.Speak('This script shows how to use the Microsoft Speech SDK with Vizard')