LAPPED ORTHOGONAL 'I"SF0RM WITH INTEGER COEFFICIENTS
S. C. Chan, S. Thomas Ng · 1999
in this paper. a new X-channel integer-valued lapped transform, called the Integer Lapped Orthogonal Transform (LOT), is proposed. The new transform can be implemented using simple integer arithmetic and has vcry low implementation complexity. Using 5-bits to =present its transform kernel, it was found that good coding gain and stop band auenuation, simiIar to the LOT, could be achieved. The multiplier-less fast LOT requires only 106 additions and 42 shifts and can be implemented in 32-bit integer arithmetic [ 131.