Is it possible to receive base64 conversion audio file with less than 30 seconds through TCP comm.? any exp related this..

it just depents on your internet speed. But propably yes. Im downloading with 5mb/s and a normal audiofile in mp3 is normaly just 3Mb. But its way easier to just transmit it normaly without Base64 since You wouldnt save a byte but maybe even make it larger.