Title :
On fast algorithms for computing the inverse modified discrete cosine transform
Author :
Fan, Yun-Hui ; Madisetti, Vijay K. ; Mersereau, Russell M.
Author_Institution :
Center for Signal & Image Process., Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
3/1/1999 12:00:00 AM
Abstract :
Two new fast algorithms for computing the inverse modified discrete cosine transform (IMDCT) as used in the adaptive spectral entropy coder (ASPEC) (Brandenburg et al. 1991) are proposed. A fixed-point error analysis is presented to determine the number of significant bits required for fixed-point implementations.
Keywords :
adaptive codes; audio coding; discrete cosine transforms; entropy codes; error analysis; flow graphs; inverse problems; IMDCT; adaptive spectral entropy coder; fast algorithms; fixed-point error analysis; fixed-point implementations; inverse modified discrete cosine transform; Audio coding; Discrete cosine transforms; Discrete transforms; Entropy; Equations; Error analysis; Quantization; Signal processing algorithms; Signal reconstruction;
Journal_Title :
Signal Processing Letters, IEEE
