AudioRecord.Builder

Class Overview

Builder class for AudioRecord objects. Use this class to configure and create an AudioRecord instance. By setting the recording source and audio format parameters, you indicate which of those vary from the default behavior on the device.

Here is an example where Builder is used to specify all AudioFormat parameters, to be used by a new AudioRecord instance:

 AudioRecord recorder = new AudioRecord.Builder()
         .setAudioSource(MediaRecorder.AudioSource.VOICE_COMMUNICATION)
         .setAudioFormat(new AudioFormat.Builder()
                 .setEncoding(AudioFormat.ENCODING_PCM_16BIT)
                 .setSampleRate(32000)
                 .setChannelMask(AudioFormat.CHANNEL_IN_MONO)
                 .build())
         .setBufferSize(2*minBuffSize)
         .build();
 

If the audio source is not set with setAudioSource(int), DEFAULT is used.
If the audio format is not specified or is incomplete, its sample rate will be the default output sample rate of the device (see PROPERTY_OUTPUT_SAMPLE_RATE), its channel configuration will be CHANNEL_IN_MONO, and the encoding will be ENCODING_PCM_16BIT.
If the buffer size is not specified with setBufferSizeInBytes(int), the minimum buffer size for the source is used.

Summary

[Expand] Inherited Methods

From class java.lang.Object Object clone() Creates and returns a copy of this Object. boolean equals(Object o) Compares this instance with the specified object and indicates if they are equal. void finalize() Invoked when the garbage collector has detected that this instance is no longer reachable. final Class<?> getClass() Returns the unique instance of Class that represents this object's class. int hashCode() Returns an integer hash code for this object. final void notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up. final void notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up. String toString() Returns a string containing a concise, human-readable description of this object. final void wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object. final void wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires. final void wait(long millis) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.