clap sound detection in android

Question

I've searched StackOverflow and the web for many questions on whistle detection, etc, and many people did explain as much as they could as to how they can go about detecting their stuff.

Detect Whistle sound in android

Detect the beginning of a sound or voice in Android

But I don't get how to detect "Jack Hammer sound count" in android app? Required counter can count atleast 33 strike/sec(or 2000 strike/min).

Can any one suggest some solution?

This is my doInBackground method

    @Override
    protected Integer doInBackground(AudioCilpListener... listeners) {

        if (listeners.length == 0) {

            return 0;

        }
        AudioCilpListener listener = listeners[0];        
        AudioClipRecorder recorder = new AudioClipRecorder(listener, this);
//        boolean heard = false;
        int count = 0;        
        for (int i = 0; i < 10; i++) {

            try {

                count = recorder.startRecordingForTime(30,
                                AudioClipRecorder.RECORDER_SAMPLERATE_CD,
                                AudioFormat.ENCODING_PCM_16BIT);
                break;

            } catch (IllegalStateException ie) {

                // failed to setup, sleep and try again
                // if still can't set it up, just fail
                ie.printStackTrace();

            }

        }
        //collect the audio
        return count;

    }

Answer 1

Refer the book named "Android Sensor Programming 2012".

In Part-3 Chapter-14 "Using the Microphone", you will get all the relevant details