Adjust volume of 16-bits audio buffer
Recently, I found that it is so hard to adjust volume of the audio buffer (yeah... I am new on audio). In this post, I learned how to adjust volume of 16-bits audio buffer easily. Here is the code: private byte[] adjustVolume(byte[] audioSamples, double volume) { byte[] array = new byte[audioSamples.length]; for (int i = 0; i < array.length; i+=2) { // convert byte pair to short short audioSample = (short) ((short) ((audioSamples[i+1] & 0xff) << 8) | (audioSamples[i] & 0xff)); audioSample = (short) (audioSample * volume); // convert back array[i] = (byte) audioSample; array[i+1] = (byte) (audioSample >> 8); } return array; } You can see that the code below is storing audiobuffer using "byte" datatype which is 8-bits datatype. Since our audio buffer is 16-buts datatype, you need to convert it into 16-bits datatype (I used "short") by using shift method (you can find...