Compare commits
7 Commits
Author | SHA1 | Date | |
---|---|---|---|
144b8eb676 | |||
d3d7def833 | |||
c61e56c3b5 | |||
f2b85fb4e7 | |||
32decab687 | |||
f98a3580a6 | |||
5b920359a1 |
@ -2,6 +2,7 @@
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.greenwatch">
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<uses-permission android:name="android.permission.RECORD_AUDIO" />
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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@ -9,6 +10,9 @@
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/Theme.GreenWatch">
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<activity
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android:name=".Mikrofon"
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android:exported="false" />
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<activity
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android:name=".MainActivity"
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android:exported="true">
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@ -0,0 +1,23 @@
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package com.example.greenwatch;
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public class GleitenderMittelwert {
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private final float wichtungNeuerWert;
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private final float wichtungAlterWert;
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private float mittelwert = 0;
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private boolean istMittelwertGesetzt = false;
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GleitenderMittelwert(float wichtungNeuerWert) {
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this.wichtungNeuerWert = wichtungNeuerWert;
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this.wichtungAlterWert = 1 - this.wichtungNeuerWert;
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}
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float mittel(float wert) {
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if (istMittelwertGesetzt) {
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mittelwert = wert * wichtungNeuerWert + mittelwert * wichtungAlterWert;
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} else {
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mittelwert = wert;
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istMittelwertGesetzt = true;
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}
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return mittelwert;
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}}
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@ -2,7 +2,10 @@ package com.example.greenwatch;
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import androidx.appcompat.app.AppCompatActivity;
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import android.content.Intent;
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import android.os.Bundle;
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import android.view.View;
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import android.widget.Button;
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public class MainActivity extends AppCompatActivity {
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@ -10,5 +13,13 @@ public class MainActivity extends AppCompatActivity {
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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((Button)findViewById(R.id.buttonstartmicdetection)).setOnClickListener(new View.OnClickListener(){
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@Override
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public void onClick(View view) {
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Intent i = new Intent(MainActivity.this, Mikrofon.class);
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startActivity(i);
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}
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});
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}
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}
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@ -1,4 +1,254 @@
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package com.example.greenwatch;
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public class Mikrofon {
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import androidx.appcompat.app.AppCompatActivity;
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import androidx.core.app.ActivityCompat;
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import androidx.core.content.ContextCompat;
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import android.Manifest;
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import android.content.Context;
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import android.content.SharedPreferences;
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import android.content.pm.PackageManager;
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import android.media.AudioFormat;
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import android.media.AudioRecord;
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import android.media.MediaRecorder;
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import android.os.AsyncTask;
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import android.os.Bundle;
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import android.widget.TextView;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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public class Mikrofon extends AppCompatActivity {
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private AufnahmeTask aufnahmeTask;
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private TextView textViewMaxAmp;
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private TextView textViewMaxAmpdb;
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private TextView textViewZeitstempel;
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private static final int RECHTEANFORDERUNG_MIKROFON = 1;
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private boolean detection_mic = false;
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private String zeit = "0";
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private boolean kalibrierung_do = true;
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private float threshold = 40;
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private float sensitivity = 5;
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private final static String KEY_WERT = "KEY_WERT_" + Mikrofon.class.getSimpleName();
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private final static String KEY_KALIBRIERUNG = "KEY_KALIBRIERUNG_" + Mikrofon.class.getSimpleName();
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_mikrofon);
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textViewMaxAmp = (TextView) findViewById(R.id.textViewMaxAmp);
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textViewMaxAmpdb = (TextView) findViewById(R.id.textViewMaxAmpdb);
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textViewZeitstempel = (TextView) findViewById(R.id.textViewZeitstempel);
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//kalibrierung_do = true;
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}
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@Override
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protected void onResume() {
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super.onResume();
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SharedPreferences p = getPreferences(Context.MODE_PRIVATE);
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threshold = p.getFloat(KEY_WERT, 40);
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kalibrierung_do = p.getBoolean(KEY_KALIBRIERUNG, true);
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if (!istZugriffAufMikrofonErlaubt()) {
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zugriffAufMikrofonAnfordern();
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}
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if (istZugriffAufMikrofonErlaubt()) {
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aufnahmeTask = new AufnahmeTask();
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aufnahmeTask.execute();
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}
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}
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@Override
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protected void onPause() {
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super.onPause();
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SharedPreferences p = getPreferences(Context.MODE_PRIVATE);
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SharedPreferences.Editor editor = p.edit();
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editor.putFloat(KEY_WERT, threshold);
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if(isFinishing()==true){
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editor.putBoolean(KEY_KALIBRIERUNG, true);
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}else {
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editor.putBoolean(KEY_KALIBRIERUNG, false);
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}
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editor.commit();
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if(aufnahmeTask!=null) {
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aufnahmeTask.cancel(true);
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aufnahmeTask = null;
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}
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}
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private boolean istZugriffAufMikrofonErlaubt() {
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if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
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return false;
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} else {
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return true;
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}
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}
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private void zugriffAufMikrofonAnfordern() {
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ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, RECHTEANFORDERUNG_MIKROFON);
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}
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public static String Zeitpunkt(){
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Long tslong = System.currentTimeMillis();
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SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
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Date date = new Date(tslong);
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String resultdate = sdf.format(date);
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return resultdate;
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}
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class AufnahmeTask extends AsyncTask<Long, Verarbeitungsergebnis, Void> {
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private AudioRecord recorder;
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private final int sampleRateInHz = 44100;
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private final int channelConfig = AudioFormat.CHANNEL_IN_MONO;
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private final int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
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private int minPufferGroesseInBytes;
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private int pufferGroesseInBytes;
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private RingPuffer ringPuffer = new RingPuffer(10);
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private boolean erlaubt_rise = true;
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private boolean erlaubt_fall = true;
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AufnahmeTask() {
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minPufferGroesseInBytes = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
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pufferGroesseInBytes = minPufferGroesseInBytes * 2;
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recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, pufferGroesseInBytes);
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}
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//hi
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public float kalibrieren(short[] puffer){
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try {
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Thread.sleep(3000);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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int anzahlIterationen = 100;
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float sum = 0;
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for(int i = 0; i < anzahlIterationen; i++){
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int z = recorder.read(puffer, 0, puffer.length);
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Verarbeitungsergebnis kalibrierung = verarbeiten(puffer, z);
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sum += (float) kalibrierung.db;
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System.out.println("Aktueller_Wert Kalibrierung" +kalibrierung.db);
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}
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System.out.println("Summe:"+sum);
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return sum/anzahlIterationen;
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}
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public void Detektion(Verarbeitungsergebnis ergebnis){
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if(ergebnis.db >= (threshold+sensitivity)){
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detection_mic = true;
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erlaubt_fall = true;
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while(erlaubt_rise){
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erlaubt_rise = false;
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zeit = Zeitpunkt() + " - " + ergebnis.db + " - " + (threshold+sensitivity); //Überschreiben des Zeitpunkts beim Erkennen der Detektion
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//nur zum Testen in zeit noch ergebnis.db und threshold ausgegeben -> muss am Ende nur Zeitpunkt() rein, Rest weg
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}
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} else if (ergebnis.db <= (threshold)) {
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detection_mic = false;
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erlaubt_rise = true;
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while(erlaubt_fall){
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erlaubt_fall = false;
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zeit = Zeitpunkt(); //erneutes Überschreiben des Zeitpunkts beim Verschwinden der Detektion
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}
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}
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}
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@Override
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protected Void doInBackground(Long... params) {
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recorder.startRecording();
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short[] puffer = new short[pufferGroesseInBytes / 2];
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GleitenderMittelwert gleitenderMittelwertdB = new GleitenderMittelwert(0.2f);
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float db = 0;
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//kalibrierung
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if(kalibrierung_do){
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threshold = kalibrieren(puffer);
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kalibrierung_do = false;
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}
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for (; ; ) {
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if (isCancelled()) {
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break;
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} else {
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//ergebnis ermitteln
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int n = recorder.read(puffer, 0, puffer.length);
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Verarbeitungsergebnis ergebnis = verarbeiten(puffer, n);
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//Mittelwertberechnnung
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db = (float) ergebnis.db;
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db = gleitenderMittelwertdB.mittel(db);
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ergebnis.db = (int) db;
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//Db Wert mit Schwellwert vergleichen und Warnung setzen
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Detektion(ergebnis);
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publishProgress(ergebnis);
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try {
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Thread.sleep(10);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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recorder.release();
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return null;
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}
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private Verarbeitungsergebnis verarbeiten(short[] daten, int n) {
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String status;
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short maxAmp = -1;
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int db = 0, db_wert = 0;
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if (n == AudioRecord.ERROR_INVALID_OPERATION) {
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status = "ERROR_INVALID_OPERATION";
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} else if (n == AudioRecord.ERROR_BAD_VALUE) {
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status = "ERROR_BAD_VALUE";
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} else {
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status = "OK";
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short max = 0;
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for (int i = 0; i < n; i++) {
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if (daten[i] > max) {
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max = daten[i];
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}
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}
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ringPuffer.hinzufuegen(max);
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maxAmp = ringPuffer.maximum();
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}
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//Umwandlung Amplitudenwert in dB
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db_wert = (int) (20*Math.log10(maxAmp));
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if (db_wert > 0){
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db = db_wert;
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}
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return new Verarbeitungsergebnis(status, maxAmp, db);
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}
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/////////////////////////////////////////////
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@Override
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protected void onProgressUpdate(Verarbeitungsergebnis... progress) {
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super.onProgressUpdate(progress);
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System.out.println(detection_mic);
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System.out.println(zeit);
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textViewZeitstempel.setText(zeit);
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textViewMaxAmpdb.setText("" + progress[0].db);
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textViewMaxAmp.setText("" + progress[0].maxAmp);
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}
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}
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/////////////////////////////////////////////
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}
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|
63
app/src/main/java/com/example/greenwatch/RingPuffer.java
Normal file
63
app/src/main/java/com/example/greenwatch/RingPuffer.java
Normal file
@ -0,0 +1,63 @@
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package com.example.greenwatch;
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public class RingPuffer {
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private short[] puffer;
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private final int laenge;
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private int anzahlEnthaltenerDaten;
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private int position;
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public RingPuffer(int n) {
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laenge = n;
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anzahlEnthaltenerDaten = 0;
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position = 0;
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puffer = new short[laenge];
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}
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public void hinzufuegen(short wert) {
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puffer[position] = wert;
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position++;
|
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if (position >= laenge) {
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position = 0;
|
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}
|
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if (anzahlEnthaltenerDaten < laenge) {
|
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anzahlEnthaltenerDaten++;
|
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}
|
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}
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|
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/*public void hinzufuegen(short[] daten) {
|
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for (short d : daten) {
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puffer[position] = d;
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position++;
|
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if (position >= laenge) {
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position = 0;
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}
|
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}
|
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if (anzahlEnthaltenerDaten < laenge) {
|
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anzahlEnthaltenerDaten += daten.length;
|
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if (anzahlEnthaltenerDaten >= laenge) {
|
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anzahlEnthaltenerDaten = laenge;
|
||||
}
|
||||
}
|
||||
}*/
|
||||
|
||||
public short maximum() {
|
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short max = 0;
|
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for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
|
||||
if (puffer[i] > max) {
|
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max = puffer[i];
|
||||
}
|
||||
}
|
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return max;
|
||||
}
|
||||
|
||||
/* public float mittelwert() {
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float summe = 0;
|
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for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
|
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summe += puffer[i];
|
||||
}
|
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return summe / anzahlEnthaltenerDaten;
|
||||
}*/
|
||||
}
|
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|
@ -0,0 +1,13 @@
|
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package com.example.greenwatch;
|
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|
||||
public class Verarbeitungsergebnis {
|
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String status;
|
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short maxAmp;
|
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int db;
|
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//
|
||||
Verarbeitungsergebnis(String status, short maxAmp, int db) {
|
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this.status = status;
|
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this.maxAmp = maxAmp;
|
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this.db = db;
|
||||
}
|
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}
|
@ -6,13 +6,13 @@
|
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android:layout_height="match_parent"
|
||||
tools:context=".MainActivity">
|
||||
|
||||
<TextView
|
||||
<Button
|
||||
android:id="@+id/buttonstartmicdetection"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:text="Hello World!"
|
||||
android:text="Starte Mikrofon Detection"
|
||||
app:layout_constraintBottom_toBottomOf="parent"
|
||||
app:layout_constraintLeft_toLeftOf="parent"
|
||||
app:layout_constraintRight_toRightOf="parent"
|
||||
app:layout_constraintEnd_toEndOf="parent"
|
||||
app:layout_constraintStart_toStartOf="parent"
|
||||
app:layout_constraintTop_toTopOf="parent" />
|
||||
|
||||
</androidx.constraintlayout.widget.ConstraintLayout>
|
78
app/src/main/res/layout/activity_mikrofon.xml
Normal file
78
app/src/main/res/layout/activity_mikrofon.xml
Normal file
@ -0,0 +1,78 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<RelativeLayout
|
||||
xmlns:android="http://schemas.android.com/apk/res/android"
|
||||
xmlns:tools="http://schemas.android.com/tools"
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
android:paddingBottom="16dp"
|
||||
android:paddingLeft="16dp"
|
||||
android:paddingRight="16dp"
|
||||
android:paddingTop="16dp"
|
||||
tools:activity="com.example.greenwatch">
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:text="max. Amp: "
|
||||
android:id="@+id/labelMaxAmp"
|
||||
android:layout_alignParentTop="true"
|
||||
android:layout_alignParentStart="true"/>
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:id="@+id/textViewMaxAmp"
|
||||
android:text=" "
|
||||
android:layout_alignBaseline="@+id/labelMaxAmp"
|
||||
android:layout_toEndOf="@+id/labelMaxAmpdb"/>
|
||||
|
||||
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:text="max. Amp in dB: "
|
||||
android:id="@+id/labelMaxAmpdb"
|
||||
android:layout_below="@+id/labelMaxAmp"
|
||||
android:layout_alignParentStart="true"/>
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:id="@+id/textViewMaxAmpdb"
|
||||
android:text=" "
|
||||
android:layout_alignBaseline="@+id/labelMaxAmpdb"
|
||||
android:layout_toEndOf="@+id/labelMaxAmpdb"/>
|
||||
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:text="Meldung: "
|
||||
android:id="@+id/labelZeitstempel"
|
||||
android:layout_below="@+id/labelMaxAmpdb"
|
||||
android:layout_alignParentStart="true"/>
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:id="@+id/textViewZeitstempel"
|
||||
android:text=" "
|
||||
android:layout_alignBaseline="@+id/labelZeitstempel"
|
||||
android:layout_toEndOf="@+id/labelMaxAmpdb"/>
|
||||
|
||||
|
||||
|
||||
<ScrollView
|
||||
android:layout_width="match_parent"
|
||||
android:layout_height="match_parent"
|
||||
android:id="@+id/scrollView3"
|
||||
android:layout_below="@+id/labelMaxAmpdb"
|
||||
android:layout_alignParentStart="true">
|
||||
|
||||
<TextView
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:id="@+id/textViewLogger"/>
|
||||
</ScrollView>
|
||||
|
||||
</RelativeLayout>
|
Loading…
x
Reference in New Issue
Block a user