Conversion of G722 Audio codec to PCM resulted in noise in the channel and audio quality degrade.

[royranadeep]

### We have used the following block of code to convert the G722 data to PCM format :

public static byte[] DecodeG722(byte[] g722Data, int bitRate)
        {
            var codec = new G722Codec();
            var state = new G722CodecState(bitRate, G722Flags.SampleRate8000);
            var decodedLength = g722Data.Length * 2;
            var outputBuffer = new byte[decodedLength];
            var wb = new WaveBuffer(outputBuffer);
            var length = codec.Decode(state, wb.ShortBuffer, g722Data, g722Data.Length) * 2;

            if (length != outputBuffer.Length)
            {
                var outputBuffer2 = new byte[length];
                Buffer.BlockCopy(outputBuffer, 0, outputBuffer2, 0, length);
                outputBuffer = outputBuffer2;
            }

            return outputBuffer;
        }

audioCodecBitrate: 64000 sampleRate: 8000 channels: 1 bitRate: 16 packetizationTime: 20

Could you help us how to go about reducing noise and raise the quality of the audio.

[markheath]

I suggest that you create only one codec and codec state object and pass each encrypted block in, rather than creating a new instance of each every block you receive.