Title :
An MPEG-4 AAC decoder FPGA implementation for the Brazilian digital television
Author :
Renner, Adriano ; Susin, Altamiro Amadeu
Author_Institution :
PPGEE, UFRGS, Porto Alegre, Brazil
Abstract :
This paper presents an MPEG-4 AAC decoder described in VHDL language and compliant with the Brazilian Digital Television standard (SBTVD). It has been synthesized to an Altera Cyclone II 2C35 FPGA using 26549 logic elements and 248704 memory bits. The implemented architecture has been verified using an Altera DE2 prototyping board, being capable of decoding stereo signals coded as MPEG-4 AAC Low Complexity audio objects. The minimum operating frequency required for real time decoding of a stereo audio stream with a sampling rate of 48 kHz is 4 MHz and the implemented decoder is capable of running at 56 MHz, meeting the requirements. This decoder design is intended to be integrated with a system on chip for the SBTVD set-top box.
Keywords :
audio coding; audio streaming; computational complexity; digital television; field programmable gate arrays; hardware description languages; logic design; system-on-chip; 248704 memory bits; 26549 logic elements; Altera Cyclone II 2C35 FPGA; Altera DE2 prototyping board; Brazilian digital television standard; MPEG-4 AAC decoder FPGA implementation; MPEG-4 AAC low complexity audio objects; SBTVD set-top box; VHDL language; decoder design; frequency 4 MHz; frequency 48 kHz; frequency 56 MHz; minimum operating frequency; sampling rate; stereo audio stream; stereo signals decoding; storage capacity 248704 bit; system on chip; Audio coding; Decoding; Filter banks; Quantization; Standards; Transform coding; Transforms; AAC LC; Audio Decoder; MPEG-4 AAC; SBTVD;
Conference_Titel :
Programmable Logic (SPL), 2012 VIII Southern Conference on
Conference_Location :
Bento Goncalves
Print_ISBN :
978-1-4673-0184-8
DOI :
10.1109/SPL.2012.6211796
