Explain audio encoder and decoder used in MPEG. - Ques10 i. The principle of MPEG audio compression is quantization. The values being quantized however are not the audio samples but numbers (called signals) taken from the frequency domain of the sound. ii. The fact that the compression ratio (or equivalently bit rate) is known to the encoder means that the encoder knows at any time how many bits it can allocate to the quantized signals. iii. NXTENC-2014-1-HD MPEG-2/H Encoder - NEXTOLOGIES nxtenc-2014-1-hd mpeg-2/h.264 BLOCK DIAGRAM Nextologies' Encoder is our newest broadcasting SD/HD video and audio encoding, multiplexing device with powerful functionality.