Title :
Audio-Specific Signal Processor(ASSP) for High-Quality Audio Codec
Author :
Ryu, Jeong Hun ; Yoon, Suk Hyun ; Sunwoo, Myung Hoon ; Moon, Jong Ha
Author_Institution :
Sch. of Electr. & Comput. Eng., Ajou Univ., Suwon
Abstract :
This paper proposes an audio-specific signal processor for a high-quality audio codec. Filter bank calculation and Huffman decoding require massive computation in MPEG-2/4 AAC decoding. Therefore, the proposed architecture is specially designed for these tasks. The proposed architecture has two optimized units for the IMDCT (inverse modified discrete cosine transform) and Huffman decoding. Performance comparisons show significant improvement compared with other commercial DSPs. The proposed ASSP has been synthesized using the Samsung SEC 0.18 mum standard cell library. The proposed ASSP core consists of 120,283 gates and runs at 200 MHz
Keywords :
Huffman codes; audio coding; channel bank filters; discrete cosine transforms; 0.18 micron; 200 MHz; ASSP; Huffman decoding; IMDCT; MPEG-2/4 AAC decoding; audio-specific signal processor; filter bank calculation; high-quality audio codec; inverse modified discrete cosine transform; standard cell library; Application specific integrated circuits; Codecs; Computer architecture; Decoding; Digital signal processing; Digital signal processing chips; Filter bank; Signal processing; Signal processing algorithms; Transform coding;
Conference_Titel :
Asian Solid-State Circuits Conference, 2005
Conference_Location :
Hsinchu
Print_ISBN :
0-7803-9163-2
Electronic_ISBN :
0-7803-9163-2
DOI :
10.1109/ASSCC.2005.251757