Пики формы волны ⇐ Android

[Гость]

I'm making an Android Audio Recording app and I managed to make it with a waveform however I'm having a hard time to make a formula for the spike even when the surroundings is very quiet I'm getting a big spike in my waveform

Result

WaveformView Class

Код: Выделить всё

public class WaveformView extends View {     private Paint paint = new Paint();     private List amplitudes = new ArrayList();     private List spikes = new ArrayList();     private float radius = 6f;     private float w = 9f;     private float d = 6f;     private float sw = 0f;     private float sh = 400f;     private int maxSpikes = 0;     public WaveformView(Context context, AttributeSet attrs) {         super(context, attrs);         paint.setColor(Color.rgb(244, 81, 30));         sw = getResources().getDisplayMetrics().widthPixels;         maxSpikes = (int) (sw / (w + d));     }     public void addAmplitude(float amp) {         float norm = Math.min((int) (amp / 7), 400);         amplitudes.add(norm);         spikes.clear();         List amps = new ArrayList(amplitudes.subList(Math.max(amplitudes.size() - maxSpikes, 0)                 , amplitudes.size()));         for (int i = 0; i < amps.size(); i++) {             float left = sw - i * (w + d);             float top = sh/2 - amps.get(i)/2;             float right = left + w;             float bottom = top + amps.get(i);             spikes.add(new RectF(right, top, left, bottom));         }         invalidate();     }     @Override     protected void onDraw(Canvas canvas) {         super.onDraw(canvas);         for (RectF spike : spikes) {             canvas.drawRoundRect(spike, radius, radius, paint);         }     } 

Here is the code how I call the Waveform once the recording started

Код: Выделить всё

        updateWaveformRunnable = new Runnable() {             @Override             public void run() {                 // Check if mediaRecorder is still recording                 if (isRecording) {                     // Ensure mediaRecorder is not null before getting max amplitude                     if (mediaRecorder != null) {                         float maxAmplitudeFloat = (float) mediaRecorder.getMaxAmplitude();                         Log.d("Max Amplitude", String.valueOf(maxAmplitudeFloat));                         waveformView.addAmplitude(maxAmplitudeFloat);                     } else {                         Log.e("MicFragment", "MediaRecorder is null");                     }                     // Schedule the next update after a delay                     timerHandler.postDelayed(this, 100); // Adjust the interval as needed                 }             }         }; 

Источник: https://stackoverflow.com/questions/781 ... orm-spikes