How did you create your WAV file? It looks like it has a high bitrate. There are only certain formats supported by the recognizer. Try: 8 bits per sample single channel mono 22,050 samples per second PCM encoding You have about 3 seconds of audio and the file size is 520 KB. That seems too big … Read more
SAPI stands for “Server API” (and API stands for “Application Programming Interface”). It is the mechanism that controls the interaction between the “outside world” and the PHP/Zend engine. So, you would always want to use it. In fact, you cannot avoid using it without a lot of effort since even CLI is considered a SAPI.
I got live speech recognition working by overriding the stream class: class SpeechStreamer : Stream { private AutoResetEvent _writeEvent; private List<byte> _buffer; private int _buffersize; private int _readposition; private int _writeposition; private bool _reset; public SpeechStreamer(int bufferSize) { _writeEvent = new AutoResetEvent(false); _buffersize = bufferSize; _buffer = new List<byte>(_buffersize); for (int i = 0; i … Read more
Perhaps you want to use the .net System.Speech namespace instead of SAPI? There is a very good article that was published a few years ago at http://msdn.microsoft.com/en-us/magazine/cc163663.aspx. It is probably the best introductory article I’ve found so far. It is a little out of date, but very helfpul. (The AppendResultKeyValue method was dropped after the … Read more