Sending data to PocketSphinx for Windows desktop i

问题:

Here is my thread function

public void run() {
        recorder.start();
        d.startUtt();
        d.setRawdataSize(300000);
        byte[] b = new byte[4096];

        // Skip the first buffer, usually zeroes
        recorder.read(b, 0, b.length);
        while ((!interrupted()))
        {
            int nbytes;
            short[] s = null;
            nbytes = recorder.read(b, 0, b.length);

            ByteBuffer bb = ByteBuffer.wrap(b, 0, nbytes);
            s = new short[nbytes/2];
            bb.asShortBuffer().get(s);
            d.processRaw(s, nbytes/2, false, false);

            if (nbytes > 0)
            {
                d.processRaw(s, nbytes, false, false);

                Hypothesis hypothesis = d.hyp();

                if(hypothesis != null)
                    System.out.println(hypothesis.getHypstr());
            }
            if (this.timeoutSamples != -1) {
                this.remainingSamples -= nbytes;
            }
        }
        recorder.stopRecording();
        d.endUtt();
    }  

In this my microphone is continuously recording and i am sending the audioInputStream data to decoder.processRaw before even stopping microphone. I tried this but somehow. .dll library is not returning any logs and decoder.hyp() is also coming as null. continuously. I think that recorder thread is messing with the decoder library thread. in C library.

EDIT: initialization of decoder

 Config c = Decoder.defaultConfig();
    String acousticModelLoc = "speech\\model\\en-us-ptm";
    String dictLoc = "dictionary\\cmudict-en-us.dict";

    String kwFileLoc = "speech\\grammar\\digits.gram";


    c.setString("-hmm", acousticModelLoc);
    c.setString("-jsgf", kwFileLoc);
    c.setString("-dict", dictLoc);
    d = new Decoder(c);

PLEASE help

回答1:

This line:

 d.processRaw(s, nbytes, false, false);

is offensive, you send the data twice and you send the wrong size of the data. You need to remove it since you already send data for processing before.

        d.processRaw(s, nbytes/2, false, false);
        if (nbytes > 0)
        {
    ->>>>>  d.processRaw(s, nbytes, false, false);

            Hypothesis hypothesis = d.hyp();

            if(hypothesis != null)
                System.out.println(hypothesis.getHypstr());
        }

You can open rawdata in audacity and listen, it should be clean speech. In your case it is corrupted since you do not send data properly to the decoder.