我目前正在使用 PySpeech 来识别语音。我正在尝试在没有 Windows Speech Recognition 的默认命令的情况下启动语音识别。
通过谷歌搜索，我发现将 speech.py 中的这一行从：
_recognizer = win32com.client.Dispatch("SAPI.SpSharedRecognizer")
至：
_recognizer = win32com.client.Dispatch("SAPI.SpInprocRecognizer")
不包括所有默认命令。当我测试识别器是否在监听时，它返回 false。在这一点上，我只是想让 pySpeech 识别我在说什么，然后回复给我。
测试代码：
import speech
speech.say("say something") #<--- says "say something"
print speech.input() #<--- gets stuck here
print speech.islistening() #<----- prints False
语音.py：
"""
speech recognition and voice synthesis module.
Please let me know if you like or use this module -- it would make my day!
speech.py: Copyright 2008 Michael Gundlach (gundlach at gmail)
License: Apache 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
For this module to work, you'll need pywin32 (http://tinyurl.com/5ezco9
for Python 2.5 or http://tinyurl.com/5uzpox for Python 2.4) and
the Microsoft Speech kit (http://tinyurl.com/zflb).
Classes:
Listener: represents a command to execute when phrases are heard.
Functions:
say(phrase): Say the given phrase out loud.
input(prompt, phraselist): Block until input heard, then return text.
stoplistening(): Like calling stoplistening() on all Listeners.
islistening(): True if any Listener is listening.
listenforanything(callback): Run a callback when any text is heard.
listenfor(phraselist, callback): Run a callback when certain text is heard.
Very simple usage example:
import speech
speech.say("Say something.")
print "You said " + speech.input()
def L1callback(phrase, listener):
print phrase
def L2callback(phrase, listener):
if phrase == "wow":
listener.stoplistening()
speech.say(phrase)
# callbacks are executed on a separate events thread.
L1 = speech.listenfor(["hello", "good bye"], L1callback)
L2 = speech.listenforanything(L2callback)
assert speech.islistening()
assert L2.islistening()
L1.stoplistening()
assert not L1.islistening()
speech.stoplistening()
"""
from win32com.client import constants as _constants
import win32com.client
import pythoncom
import time
import thread
# Make sure that we've got our COM wrappers generated.
from win32com.client import gencache
gencache.EnsureModule('{C866CA3A-32F7-11D2-9602-00C04F8EE628}', 0, 5, 0)
_voice = win32com.client.Dispatch("SAPI.SpVoice")
_recognizer = win32com.client.Dispatch("SAPI.SpInprocRecognizer")
_listeners = []
_handlerqueue = []
_eventthread=None
class Listener(object):
"""Listens for speech and calls a callback on a separate thread."""
_all = set()
def __init__(self, context, grammar, callback):
"""
This should never be called directly; use speech.listenfor()
and speech.listenforanything() to create Listener objects.
"""
self._grammar = grammar
Listener._all.add(self)
# Tell event thread to create an event handler to call our callback
# upon hearing speech events
_handlerqueue.append((context, self, callback))
_ensure_event_thread()
def islistening(self):
"""True if this Listener is listening for speech."""
return self in Listener._all
def stoplistening(self):
"""Stop listening for speech. Returns True if we were listening."""
try:
Listener._all.remove(self)
except KeyError:
return False
# This removes all refs to _grammar so the event handler can die
self._grammar = None
if not Listener._all:
global _eventthread
_eventthread = None # Stop the eventthread if it exists
return True
_ListenerBase = win32com.client.getevents("SAPI.SpSharedRecoContext")
class _ListenerCallback(_ListenerBase):
"""Created to fire events upon speech recognition. Instances of this
class automatically die when their listener loses a reference to
its grammar. TODO: we may need to call self.close() to release the
COM object, and we should probably make goaway() a method of self
instead of letting people do it for us.
"""
def __init__(self, oobj, listener, callback):
_ListenerBase.__init__(self, oobj)
self._listener = listener
self._callback = callback
def OnRecognition(self, _1, _2, _3, Result):
# When our listener stops listening, it's supposed to kill this
# object. But COM can be funky, and we may have to call close()
# before the object will die.
if self._listener and not self._listener.islistening():
self.close()
self._listener = None
if self._callback and self._listener:
newResult = win32com.client.Dispatch(Result)
phrase = newResult.PhraseInfo.GetText()
self._callback(phrase, self._listener)
def say(phrase):
"""Say the given phrase out loud."""
_voice.Speak(phrase)
def input(prompt=None, phraselist=None):
"""
Print the prompt if it is not None, then listen for a string in phraselist
(or anything, if phraselist is None.) Returns the string response that is
heard. Note that this will block the thread until a response is heard or
Ctrl-C is pressed.
"""
def response(phrase, listener):
if not hasattr(listener, '_phrase'):
listener._phrase = phrase # so outside caller can find it
listener.stoplistening()
if prompt:
print prompt
if phraselist:
listener = listenfor(phraselist, response)
else:
listener = listenforanything(response)
while listener.islistening():
time.sleep(.1)
return listener._phrase # hacky way to pass back a response...
def stoplistening():
"""
Cause all Listeners to stop listening. Returns True if at least one
Listener was listening.
"""
listeners = set(Listener._all) # clone so stoplistening can pop()
returns = [l.stoplistening() for l in listeners]
return any(returns) # was at least one listening?
def islistening():
"""True if any Listeners are listening."""
return not not Listener._all
def listenforanything(callback):
"""
When anything resembling English is heard, callback(spoken_text, listener)
is executed. Returns a Listener object.
The first argument to callback will be the string of text heard.
The second argument will be the same listener object returned by
listenforanything().
Execution takes place on a single thread shared by all listener callbacks.
"""
return _startlistening(None, callback)
def listenfor(phraselist, callback):
"""
If any of the phrases in the given list are heard,
callback(spoken_text, listener) is executed. Returns a Listener object.
The first argument to callback will be the string of text heard.
The second argument will be the same listener object returned by
listenfor().
Execution takes place on a single thread shared by all listener callbacks.
"""
return _startlistening(phraselist, callback)
def _startlistening(phraselist, callback):
"""
Starts listening in Command-and-Control mode if phraselist is
not None, or dictation mode if phraselist is None. When a phrase is
heard, callback(phrase_text, listener) is executed. Returns a
Listener object.
The first argument to callback will be the string of text heard.
The second argument will be the same listener object returned by
listenfor().
Execution takes place on a single thread shared by all listener callbacks.
"""
# Make a command-and-control grammar
context = _recognizer.CreateRecoContext()
grammar = context.CreateGrammar()
if phraselist:
grammar.DictationSetState(0)
# dunno why we pass the constants that we do here
rule = grammar.Rules.Add("rule",
_constants.SRATopLevel + _constants.SRADynamic, 0)
rule.Clear()
for phrase in phraselist:
rule.InitialState.AddWordTransition(None, phrase)
# not sure if this is needed - was here before but dupe is below
grammar.Rules.Commit()
# Commit the changes to the grammar
grammar.CmdSetRuleState("rule", 1) # active
grammar.Rules.Commit()
else:
grammar.DictationSetState(1)
return Listener(context, grammar, callback)
def _ensure_event_thread():
"""
Make sure the eventthread is running, which checks the handlerqueue
for new eventhandlers to create, and runs the message pump.
"""
global _eventthread
if not _eventthread:
def loop():
while _eventthread:
pythoncom.PumpWaitingMessages()
if _handlerqueue:
(context,listener,callback) = _handlerqueue.pop()
# Just creating a _ListenerCallback object makes events
# fire till listener loses reference to its grammar object
_ListenerCallback(context, listener, callback)
time.sleep(.5)
_eventthread = 1 # so loop doesn't terminate immediately
_eventthread = thread.start_new_thread(loop, ())