perf(*): 调整音频取样最大值计算规则

Author: AndroidCoderPeng

app/src/main/java/com/pengxh/kt/lib/MainActivity.kt

@@ -93,7 +93,7 @@ class MainActivity : KotlinBaseActivity<ActivityMainBinding>(),
                                 initHub(createAudioFile())
                                 startRecord(object : AudioRecordHub.OnAudioStatusUpdateListener {
                                     override fun onUpdate(db: Double, time: Long) {
-                                        imageView.drawable.level = (3000 + 6000 * db / 100).toInt()
+                                        imageView.drawable.level = (1000 + 60 * db).toInt()
                                         textView.text = time.millsToTime()
                                     }
 

lite/src/main/java/com/pengxh/kt/lite/widget/audio/AudioRecordHub.kt

@@ -104,12 +104,13 @@ class AudioRecordHub private constructor(private val context: Context) {
      * 更新麦克状态
      */
     private fun updateMicStatus() {
-        val ratio = mediaRecorder?.maxAmplitude
-        val db = if (ratio == null) {
+        //调用时音频采样的最大绝对振幅
+        val amplitude = mediaRecorder?.maxAmplitude
+        val db = if (amplitude == null) {
             0.0
         } else {
-            if (ratio > 1) {
-                30 * log10(ratio.toDouble())
+            if (amplitude > 1) {
+                20 * log10(amplitude / 0.1)
             } else {
                 0.0
             }