private String Audio(byte b)
        {
            byte[] msg = new byte[19];
            byte[] message = new byte[] { 0x01, 0x30, 0x41, 0x30, 0x45, 0x30, 0x3A, 0x02, 0x30, 0x32, 0x32, 0x3E, 0x30, 0x30, 0x30, b, 0x03 };