Efficient realization of biorthoganal [sic] fixed point cosine modulated filter banks

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Title: Efficient realization of biorthoganal [sic] fixed point cosine modulated filter banks
Author: Casey, Ryan
Abstract: Cosine modulated filter banks are widely researched and used in signal compression because they can provide perfect reconstruction (PR ) while maintaining a low computational cost . Their ability to provide PR can be hindered by the device that they are implemented on . Fixed -point digital signal processors require that the filter coefficients be quantized , force resultants to be rounded , and are subject to overflow . All three can lead to reconstruction errors . For the filter bank to preserve its PR properties , its realization structure must be robust to these three sources of error . This structure is then implemented on a fixed -point device , such as a TI C6201 DSP without losing a valuable property . This is validated in this thesis along with showing that the frequency response of the filters is upheld by this structure through the use of Matlab simulations supported by a DSP implementation
URI: http : / /hdl .handle .net /2346 /19312
Date: 2002-12

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Efficient realization of biorthoganal [sic] fixed point cosine modulated filter banks. Master's thesis, Texas Tech University. Available electronically from http : / /hdl .handle .net /2346 /19312 .

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