Title :
FPGA Implementation of a Modulated Complex Lapped Transform for Watermarking Systems
Author :
Garcia-Hernandez, Jose Juan ; Feregrino-Uribe, Claudia ; Cumplido, Rene
Author_Institution :
Dept.of Opt. & Electron., Nat. Inst. for Astrophys., Puebla
Abstract :
The modulated complex lapped transform (MCLT) is a 2times oversampled DFT filter bank. The MCLT has showed to be a good selection in audio compression and watermarking systems. It has been demonstrated that a length-M MCLT can be mapped to a length-2M fast Fourier transform plus M butterfly-like stages without data shuffling, therefore, the MCLT is appropriate for efficient hardware implementations. This paper presents an efficient implementation of the MCLT in a field programmable gate array (FPGA). Results are presented and discussed.
Keywords :
audio coding; channel bank filters; data compression; fast Fourier transforms; field programmable gate arrays; watermarking; DFT filter bank; FPGA implementation; audio compression; audio watermarking; data shuffling; fast Fourier transform; field programmable gate array; modulated complex lapped transform; Astrophysics; Discrete cosine transforms; Discrete transforms; Field programmable gate arrays; Hardware; Optical computing; Optical filters; Real time systems; Signal processing algorithms; Watermarking; FPGA; MCLT; Watermarking Systems;
Conference_Titel :
Reconfigurable Computing and FPGAs, 2008. ReConFig '08. International Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-3748-1
Electronic_ISBN :
978-0-7695-3474-9
DOI :
10.1109/ReConFig.2008.35
