音声を録音して、その音量をdbで取りたいと思っています。
しかし上記のエラーが出てしまいます。
channel configurationをどのように選べばいいのか分かっていないためだと思います。
ご指摘をください
コード package com.example.apponozawa.anasuto; /** * Created by App Onozawa on 2016/12/01. */ import java.nio.ByteBuffer; import android.media.AudioFormat; import android.media.AudioRecord; import android.media.MediaRecorder; import android.util.Log; public class SoundLevelMeter implements Runnable { private static final int SAMPLE_RATE = 8000; private int bufferSize; private AudioRecord audioRecord; private boolean isRecording; private boolean isPausing; private double baseValue; public interface SoundLevelMeterListener { void onMeasure(double db); } private SoundLevelMeterListener listener; public SoundLevelMeter() { bufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT); audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize); listener = null; isRecording = true; baseValue = 12.0; pause(); } public void setListener(SoundLevelMeterListener l) { listener = l; } @Override public void run() { android.os.Process .setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO); resume(); short[] buffer = new short[bufferSize]; while (isRecording) { if (!isPausing) { int read = audioRecord.read(buffer, 0, bufferSize); if (read < 0) { throw new IllegalStateException(); } int maxValue = 0; for (int i = 0; i < read; i++) { maxValue = Math.max(maxValue, buffer[i]); } double db = 20.0 * Math.log10(maxValue / baseValue); Log.d("SoundLevelMeter", "dB:" + db); if (listener != null) { listener.onMeasure(db); } } try { Thread.sleep(200); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } audioRecord.stop(); audioRecord.release(); } public void stop() { isRecording = false; } public void pause() { if (!isPausing) audioRecord.stop(); isPausing = true; } public void resume() { if (isPausing) audioRecord.startRecording(); isPausing = false; } public void setBaseValue(double value) { baseValue = value; } }
回答1件
あなたの回答
tips
プレビュー