Operator s Manual. minibht Audiometry Android App. Team 2. Samir Dahmani, Nihit Mody, Joseph Wolanski. Client: Dr. Oliver

Transcription

1 Operator s Manual minibht Audiometry Android App Team 2 Samir Dahmani, Nihit Mody, Joseph Wolanski Client: Dr. Oliver Farmington, CT UConn Health Center Table Of Contents:

2 1 Introduction 1.1 General Overview 1.2 Operating Instructions 2 Maintenance 3 Technical Description 1. Introduction

3 At the most basic level an audiogram is a screening test like that which is used in schools. A series of tones at fixed volumes are presented to the listener who then indicates which ones he or she can detect. PTA is a subjective and behavioral measurement of hearing threshold, because it relies on patient initiation of a response to acoustic stimuli. PTA is designed for clinical use on adults and children old enough to understand and execute the test procedure. Like the majority of clinical tests, calibration of the test environment, the equipment and the stimuli to ISO standards is pivotal, as PTA measures thresholds of hearing only (in contrast with other methods which delineate sound localization). Békésy audiometry is such that the patient, by pressing a signal button, traces monaural thresholds for pure tones: the intensity of the tone decreases as long as the button is depressed and increases when it is released; both continuous and interrupted tones are used. The Apps that are currently available on the various online stores bear little resemblance to the accuracy of a professional audiogram. This application presents the user with a reliable and clinically viable hearing screen for the user. This is thanks to measures taken to ensure calibration and standardization across testing conditions for the test.

4 pure tone audiometry 1.1 General Overview When the app is opened, a pure tone at a midrange frequency will come through the earphone. The subject will control the intensity of the stimulus by pressing a button while listening to a pulsing (0.5s) pure tone whose frequency slowly moves through the entire audible range. This is what is called an interrupted tone. The intensity diminishes as long as the button is depressed. When the intensity is too low for the subject to hear the tone, the button will be released and the intensity will start to increase. When the subject again hears the tone, the button will be pressed again, producing a zigzag trace. The test will involve diagnostics on each ear, after which the tracings of both the left and the right ear will be compared. The test will be usable to differentiate between cochlear and neural hearing losses. Below is a graph of the calibrated 250hz signal that was used for the test. The

5 testing set up includes a nexus 4 phone, and a pair of apple earbuds.

6 All of the signals are calibrated to generate a flat output. The user begins the test by opening the app and depressing the red button on the screen. Clicking the red button set the pulsating tones. The tones pulse at 0.4 second intervals. Pressing the button attenuates the volume of the pulsating tone gradually,

7 starting at a large interval and incrementing in smaller steps asymptotically towards 0dB. The user is asked to hold the button down until he/she can no longer hear the tone; once the tone is no longer audible, release the button until the pulse becomes audible again, then depress once again until the tone is again in-audible. Repeating this for the duration of the test, the test cycles through 6 frequencies, starting with the left ear, and then moving to the left ear. 1.2 Operating Instructions This test is a basic hearing test similar to what an audiologist would run. Your hearing will be tested, one ear at a time, for tones at six frequencies. After you press the red button, you will hear a low frequency tone in your left earphone only. It will be a repeating pulse at level that is easy to hear. Once you hear this sound, press the red button and hold it down. As you continue to hold down the red button, you will notice that the level of the sound will gradually decrease. The level will reach a point that is barely audible and then it will vanish. Just at the point you can no longer hear the sound, release the red button. Listen carefully, because the level of the sound will increase and it will emerge again. Do not wait for it to reach the easy-to-hear level. As soon as it is audible, hold down the red button to make it vanish again and release the red button just as it vanishes. You will repeat this process several times for the tone. After a few of these cycles of making the tone just vanish and re-emerge, your threshold for hearing that frequency will be recorded by the application and the next

8 higher frequency will be heard in in the earphone at an easy-to-hear starting level. The entire routine will be carried out for all six frequencies. After thresholds for all six frequencies have been recorded using your left ear, the entire process will be repeated for your right ear. In plain English, you hold the red button down until you just can t hear the sound anymore and you release the red button until you just can hear it again. Unpressed

9 Pressed The test takes minutes. When it has been completed, the screen changes and sound presentations cease.

10 After the test concludes, the you can view the results by clicking the results button. If the plot lines for each fall within the normal hearing range (-20db and 20db) then you have normal hearing. Points on the line falling out of the normal hearing range will denote a hearing drop off in those frequencies. 2. Maintenance THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 3. Technical Description the source code is listed below

11 import android.media.audiomanager; import android.media.mediaplayer; import android.media.soundpool; import android.os.bundle; import android.os.handler; import android.app.activity; import android.content.context; import android.content.intent; import android.util.log; import android.view.menu; import android.view.motionevent; import android.view.view; import android.view.view.onclicklistener; import android.widget.button; public class MainActivity extends Activity SoundPool sp; MediaPlayer mp; int _toneselector; int tone1 = 0; int tone2 = 0; int tone3 = 0; int tone4 = 0; int tone5 = 0; int tone6 = 0; Handler handler = new Handler(); public void oncreate(bundle b) AudioManager audiomanager = (AudioManager) getsystemservice(context.audio_service); audiomanager.setstreamvolume(audiomanager.stream_music, 9, 0); super.oncreate(b); setcontentview(r.layout.main); Button b1 = (Button) findviewbyid(r.id.button); Button b2 = (Button) findviewbyid(r.id.button1); b1.setontouchlistener(handler1); Handler handler = new Handler(); Button buttonstart = (Button) findviewbyid(r.id.button1); buttonstart.setonclicklistener(startlistener); sp = new SoundPool(5, AudioManager.STREAM_MUSIC, 0); tone1 = sp.load(this, R.raw.f250hz, 1); tone2 = sp.load(this, R.raw.f500hz, 1); tone3 = sp.load(this, R.raw.f1000hz, 1); tone4 = sp.load(this, R.raw.f2000hz, 1); tone5 = sp.load(this, R.raw.f4000hz, 1); tone6 = sp.load(this, R.raw.f8000hz, 1);

12 View.OnTouchListener handler1 = new public boolean ontouch(view v, MotionEvent event) if (event.getaction() == android.view.motionevent.action_down) _downpress = true; storedvolumesl[0][numberofpress] = numberofpress; storedvolumesl[1][numberofpress] = voll; storedvolumesr[0][numberofpress] = numberofpress; storedvolumesr[1][numberofpress] = volr; numberofpress++; if (_firsttime == true) _toneselector = tone1; looptone(); else if (event.getaction() == android.view.motionevent.action_up) _downpress = false; storedvolumesl[0][numberofpress] = numberofpress; storedvolumesl[1][numberofpress] = voll; storedvolumesr[0][numberofpress] = numberofpress; storedvolumesr[1][numberofpress] = volr; numberofpress++; System.out.println(volL); return false; ; public void looptone() _firsttime = false; Thread thread = new public void run() while (_flag == false) channelswitcher(); // check to see if left ear is done, if // so switch channel freqcount(); sp.play(_toneselector, voll, volr, 0, 0, 1);

13 if (_downpress == true) incrementer = 2 / 3; else incrementer = 3 / 2; System.out.println("Left volume: " + voll + ", " + " Right volume: " + volr); try sleep(1000); attenuatevolume(); getsystemservice(context.audio_service); // calls attenuate volume method // below AudioManager audiomanager = (AudioManager) audiomanager.setstreamvolume(audiomanager.stream_music, 9, 0); // from 0-15? System.gc(); catch (InterruptedException e) if (numberofpress >= 12 * _intervals+2) break; /*for (int i = 0; i < 6; i++) System.out.println(critpointsL[i]); System.out.println(critpointsR[i]); */ ; thread.start(); public void freqcount() System.out.println("NUMBER OF PRESSES: " + numberofpress); // System.out.println("NUMBER OF INTERVALS: " + _intervals); if (_launch250hz == true) // System.out.println("NUMPRESSES: " + numberofpress); _toneselector = tone1; _globalvol = _250hzVol; voll = _globalvol;

14 _launch250hz = false; // test rotate if (numberofpress == _intervals) totalnum = totalnum + storedvolumesl[1][i + 2]; critpointsl[0] = totalnum / 4; _toneselector = tone2; _globalvol = _500hzVol; voll = _globalvol; if (numberofpress == 2 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[1] = totalnum / 4; _toneselector = tone3; _globalvol = _1000hzVol; voll = _globalvol; if (numberofpress == 3 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[2] = totalnum / 4; _toneselector = tone4; _globalvol = _2000hzVol; voll = _globalvol; if (numberofpress == 4 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[3] = totalnum / 4;

15 _toneselector = tone5; _globalvol = _4000hzVol; voll = _globalvol; if (numberofpress == 5 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[4] = totalnum / 4; _toneselector = tone6; _globalvol = _8000hzVol; voll = _globalvol; /* * this is when the left ear is done and switches to the right ear this * is when the left ear is done and switches to the right ear this is * when the left ear is done and switches to the right ear */ if (numberofpress == 6 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[5] = totalnum / 4; _toneselector = tone1; _globalvol = _250hzVol; if (numberofpress == 7 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[0] = totalnum / 4; _toneselector = tone2; _globalvol = _500hzVol;

16 if (numberofpress == 8 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[1] = totalnum / 4; _toneselector = tone3; _globalvol = _1000hzVol; if (numberofpress == 9 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[2] = totalnum / 4; _toneselector = tone4; _globalvol = _2000hzVol; if (numberofpress == 10 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[3] = totalnum / 4; _toneselector = tone5; _globalvol = _4000hzVol; if (numberofpress == 11 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[4] = totalnum / 4; _toneselector = tone6; _globalvol = _8000hzVol;

17 if(numberofpress == 12*_intervals +1) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[5] = totalnum / 4; for (int i = 0; i < 6; i++) System.out.println(critpointsL[i]); System.out.println(critpointsR[i]); sp.stop(_toneselector); sp.release(); public void attenuatevolume() if (_lefteardone == false) // if left ear running if ((_downpress == true) && ((numberofpress%6)<2)) System.out.println("TRUEEEEEEEEEEEEE!!!!!!!!!!!!!!!!"); voll = (float) (voll * 1 / 2); if ((_downpress == true) && (numberofpress%6)>=2) voll = (float) (voll * 9 / 10); if ((_downpress!= true) && ((numberofpress%6)<2)) voll = (float) (voll * 2 / 1); if ((_downpress!= true) && ((numberofpress%6)>=2)) voll = (float) (voll * 10 / 9); if (numberofpress >= 6 * _intervals) // _toneselector = tone1; // _intervals =0; _lefteardone = true; // numberofpress = 0; if ((_downpress == true) && ((numberofpress%6)<2)) System.out.println("DOWNPRESSED");

18 volr = (float) (volr * 1 / 2); if ((_downpress == true) && ((numberofpress%6)>=2)) volr = (float) (volr * 9 / 10); if ((_downpress!= true) && ((numberofpress%6)<2)) System.out.println("UP PRESSED"); volr = (float) (volr * 2 / 1); if ((_downpress!= true) && ((numberofpress%6)>=2)) volr = (float) (volr * 10 / 9); if (voll <= 0) voll = 0; if (voll >= _globalvol) voll = _globalvol; if (volr <= 0) volr = 0; if (volr >= _globalvol) boolean _rightearstarted; public void channelswitcher() if (_lefteardone == true && oneshot == 0) voll = 0; _rightearstarted = false; oneshot++; if (_rightearstarted == false && oneshot == 1) System.out.println("FALSE"); _rightearstarted = true; oneshot++; System.out.println(oneShot); View.OnTouchListener handler2 = new public boolean ontouch(view v, MotionEvent event) if (event.getaction() == android.view.motionevent.action_down)

19 sp.play(_toneselector, voll, volr, 0, 0, 1); // System.out.println("CURRENT VOLUME: " + voll); else if (event.getaction() == android.view.motionevent.action_up) return false; ; private OnClickListener startlistener = new OnClickListener() public void onclick(view view) System.out.println("BUTTON PRESSED!"); Intent myintent = new Intent(view.getContext(), XYPlotter.class); startactivityforresult(myintent, 0); ; public static double[] getvaluesl() return critpointsl; public static double[] getvaluesr() return critpointsr; private final double duration = 0.4; // seconds private final int samplerate = 8000; private final double numsamples = duration * samplerate; private final double sample[] = new double[(int) numsamples]; private double freqoftone = 250; int freqcounter = 0; /** hz **/ // BOOLEANS private boolean _freq1; private float _channel = 1; boolean _lefteardone = false; boolean _launch250hz = true; // ****************** private byte generatedsnd[] = new byte[(int) (2 * numsamples)]; // volumes float voll = (float) 0; float volr = (float) 0; double decrvol; double incrementer = 2 / 3; double _attenuationamount = 0.09; float _globalvol; // frequency volumes for earbud offset

20 float _250hzVol = (float) 0.45; float _500hzVol = (float) 0.37; float _1000hzVol = (float) 0.36; float _2000hzVol = (float) 0.24; float _4000hzVol = (float) 0.16; float _8000hzVol = (float) 0.78; int numberofpress = 0; int numbeeps = 6; // BOOLEANS boolean _downpress; boolean _flag = false; boolean _firsttime = true; boolean leftearcomplete = false; private int idx; private double storedvalues[] = new double[(int) duration]; private static double critpointsl[] = new double[6]; private static double critpointsr[] = new double[6]; private int _intervals = 6; private double totalnum = 0; private double totalnum1 = 0; int count = 0; int _touchdowncounter = 0; int _touchcounter = 0; int _freqcounter = 0; private double _datapoints[] = new double[4000]; private double storedvolumesl[][] = new double[2][1000]; private double storedvolumesr[][] = new double[2][1000]; int oneshot = 0; int _teststage = 0; /* * protected void onresume() super.onresume(); final Thread thread = new * Thread(new Runnable() public void run() * * // gentone(); handler.post(new Runnable() public void run() * * // playsound(); ); ); thread.start(); */

21 import android.media.audiomanager; import android.media.mediaplayer; import android.media.soundpool; import android.os.bundle; import android.os.handler; import android.app.activity; import android.content.context; import android.content.intent; import android.util.log; import android.view.menu; import android.view.motionevent; import android.view.view; import android.view.view.onclicklistener; import android.widget.button; public class MainActivity extends Activity SoundPool sp; MediaPlayer mp; int _toneselector; int tone1 = 0; int tone2 = 0; int tone3 = 0; int tone4 = 0; int tone5 = 0; int tone6 = 0; Handler handler = new Handler(); public void oncreate(bundle b) AudioManager audiomanager = (AudioManager) getsystemservice(context.audio_service); audiomanager.setstreamvolume(audiomanager.stream_music, 9, 0); super.oncreate(b); setcontentview(r.layout.main); Button b1 = (Button) findviewbyid(r.id.button); Button b2 = (Button) findviewbyid(r.id.button1); b1.setontouchlistener(handler1); Handler handler = new Handler(); Button buttonstart = (Button) findviewbyid(r.id.button1); buttonstart.setonclicklistener(startlistener); sp = new SoundPool(5, AudioManager.STREAM_MUSIC, 0); tone1 = sp.load(this, R.raw.f250hz, 1); tone2 = sp.load(this, R.raw.f500hz, 1); tone3 = sp.load(this, R.raw.f1000hz, 1); tone4 = sp.load(this, R.raw.f2000hz, 1); tone5 = sp.load(this, R.raw.f4000hz, 1); tone6 = sp.load(this, R.raw.f8000hz, 1);

22 View.OnTouchListener handler1 = new public boolean ontouch(view v, MotionEvent event) if (event.getaction() == android.view.motionevent.action_down) _downpress = true; storedvolumesl[0][numberofpress] = numberofpress; storedvolumesl[1][numberofpress] = voll; storedvolumesr[0][numberofpress] = numberofpress; storedvolumesr[1][numberofpress] = volr; numberofpress++; if (_firsttime == true) _toneselector = tone1; looptone(); else if (event.getaction() == android.view.motionevent.action_up) _downpress = false; storedvolumesl[0][numberofpress] = numberofpress; storedvolumesl[1][numberofpress] = voll; storedvolumesr[0][numberofpress] = numberofpress; storedvolumesr[1][numberofpress] = volr; numberofpress++; System.out.println(volL); return false; ; public void looptone() _firsttime = false; Thread thread = new public void run() while (_flag == false) channelswitcher(); // check to see if left ear is done, if // so switch channel

23 freqcount(); sp.play(_toneselector, voll, volr, 0, 0, 1); if (_downpress == true) incrementer = 2 / 3; else incrementer = 3 / 2; System.out.println("Left volume: " + voll + ", " + " Right volume: " + volr); try sleep(1000); attenuatevolume(); getsystemservice(context.audio_service); // calls attenuate volume method // below AudioManager audiomanager = (AudioManager) audiomanager.setstreamvolume(audiomanager.stream_music, 9, 0); // from 0-15? System.gc(); catch (InterruptedException e) if (numberofpress >= 12 * _intervals+2) break; /*for (int i = 0; i < 6; i++) System.out.println(critpointsL[i]); System.out.println(critpointsR[i]); */ ; thread.start(); public void freqcount() System.out.println("NUMBER OF PRESSES: " + numberofpress); // System.out.println("NUMBER OF INTERVALS: " + _intervals); if (_launch250hz == true) // System.out.println("NUMPRESSES: " + numberofpress); _toneselector = tone1;

24 _globalvol = _250hzVol; voll = _globalvol; _launch250hz = false; // test rotate if (numberofpress == _intervals) totalnum = totalnum + storedvolumesl[1][i + 2]; critpointsl[0] = totalnum / 4; _toneselector = tone2; _globalvol = _500hzVol; voll = _globalvol; if (numberofpress == 2 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[1] = totalnum / 4; _toneselector = tone3; _globalvol = _1000hzVol; voll = _globalvol; if (numberofpress == 3 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[2] = totalnum / 4; _toneselector = tone4; _globalvol = _2000hzVol; voll = _globalvol; if (numberofpress == 4 * _intervals) totalnum = totalnum + storedvolumesl[1][i ];

25 critpointsl[3] = totalnum / 4; _toneselector = tone5; _globalvol = _4000hzVol; voll = _globalvol; if (numberofpress == 5 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[4] = totalnum / 4; _toneselector = tone6; _globalvol = _8000hzVol; voll = _globalvol; /* * this is when the left ear is done and switches to the right ear this * is when the left ear is done and switches to the right ear this is * when the left ear is done and switches to the right ear */ if (numberofpress == 6 * _intervals) totalnum = totalnum + storedvolumesl[1][i ]; critpointsl[5] = totalnum / 4; _toneselector = tone1; _globalvol = _250hzVol; if (numberofpress == 7 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[0] = totalnum / 4; _toneselector = tone2; _globalvol = _500hzVol;

26 if (numberofpress == 8 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[1] = totalnum / 4; _toneselector = tone3; _globalvol = _1000hzVol; if (numberofpress == 9 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[2] = totalnum / 4; _toneselector = tone4; _globalvol = _2000hzVol; if (numberofpress == 10 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[3] = totalnum / 4; _toneselector = tone5; _globalvol = _4000hzVol; if (numberofpress == 11 * _intervals) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[4] = totalnum / 4; _toneselector = tone6; _globalvol = _8000hzVol;

27 if(numberofpress == 12*_intervals +1) totalnum = totalnum + storedvolumesr[1][i ]; critpointsr[5] = totalnum / 4; for (int i = 0; i < 6; i++) System.out.println(critpointsL[i]); System.out.println(critpointsR[i]); sp.stop(_toneselector); sp.release(); public void attenuatevolume() if (_lefteardone == false) // if left ear running if ((_downpress == true) && ((numberofpress%6)<2)) System.out.println("TRUEEEEEEEEEEEEE!!!!!!!!!!!!!!!!"); voll = (float) (voll * 1 / 2); if ((_downpress == true) && (numberofpress%6)>=2) voll = (float) (voll * 9 / 10); if ((_downpress!= true) && ((numberofpress%6)<2)) voll = (float) (voll * 2 / 1); if ((_downpress!= true) && ((numberofpress%6)>=2)) voll = (float) (voll * 10 / 9); if (numberofpress >= 6 * _intervals) // _toneselector = tone1; // _intervals =0; _lefteardone = true; // numberofpress = 0; if ((_downpress == true) && ((numberofpress%6)<2))

28 System.out.println("DOWNPRESSED"); volr = (float) (volr * 1 / 2); if ((_downpress == true) && ((numberofpress%6)>=2)) volr = (float) (volr * 9 / 10); if ((_downpress!= true) && ((numberofpress%6)<2)) System.out.println("UP PRESSED"); volr = (float) (volr * 2 / 1); if ((_downpress!= true) && ((numberofpress%6)>=2)) volr = (float) (volr * 10 / 9); if (voll <= 0) voll = 0; if (voll >= _globalvol) voll = _globalvol; if (volr <= 0) volr = 0; if (volr >= _globalvol) boolean _rightearstarted; public void channelswitcher() if (_lefteardone == true && oneshot == 0) voll = 0; _rightearstarted = false; oneshot++; if (_rightearstarted == false && oneshot == 1) System.out.println("FALSE"); _rightearstarted = true; oneshot++; System.out.println(oneShot); View.OnTouchListener handler2 = new public boolean ontouch(view v, MotionEvent event)

29 if (event.getaction() == android.view.motionevent.action_down) sp.play(_toneselector, voll, volr, 0, 0, 1); // System.out.println("CURRENT VOLUME: " + voll); else if (event.getaction() == android.view.motionevent.action_up) return false; ; private OnClickListener startlistener = new OnClickListener() public void onclick(view view) System.out.println("BUTTON PRESSED!"); Intent myintent = new Intent(view.getContext(), XYPlotter.class); startactivityforresult(myintent, 0); ; public static double[] getvaluesl() return critpointsl; public static double[] getvaluesr() return critpointsr; private final double duration = 0.4; // seconds private final int samplerate = 8000; private final double numsamples = duration * samplerate; private final double sample[] = new double[(int) numsamples]; private double freqoftone = 250; int freqcounter = 0; /** hz **/ // BOOLEANS private boolean _freq1; private float _channel = 1; boolean _lefteardone = false; boolean _launch250hz = true; // ****************** private byte generatedsnd[] = new byte[(int) (2 * numsamples)]; // volumes float voll = (float) 0; float volr = (float) 0; double decrvol; double incrementer = 2 / 3; double _attenuationamount = 0.09;

30 float _globalvol; // frequency volumes for earbud offset float _250hzVol = (float) 0.45; float _500hzVol = (float) 0.37; float _1000hzVol = (float) 0.36; float _2000hzVol = (float) 0.24; float _4000hzVol = (float) 0.16; float _8000hzVol = (float) 0.78; int numberofpress = 0; int numbeeps = 6; // BOOLEANS boolean _downpress; boolean _flag = false; boolean _firsttime = true; boolean leftearcomplete = false; private int idx; private double storedvalues[] = new double[(int) duration]; private static double critpointsl[] = new double[6]; private static double critpointsr[] = new double[6]; private int _intervals = 6; private double totalnum = 0; private double totalnum1 = 0; int count = 0; int _touchdowncounter = 0; int _touchcounter = 0; int _freqcounter = 0; private double _datapoints[] = new double[4000]; private double storedvolumesl[][] = new double[2][1000]; private double storedvolumesr[][] = new double[2][1000]; int oneshot = 0; int _teststage = 0; /* * protected void onresume() super.onresume(); final Thread thread = new * Thread(new Runnable() public void run() * * // gentone(); handler.post(new Runnable() public void run() * * // playsound(); ); ); thread.start(); */

31