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An analytical formula for the design of quadrature mirror filters

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2 Author(s)
Pirani, G. ; Centro Studi e Laboratori Telecomunicazioni, Torino, Italy ; Zingarelli, V.

Quadrature mirror filters have an outstanding relevance in the implementation of filter banks for dividing the speech signal into frequency bands and for reconstructing it from these subbands. An analytical formula is given, which allows one to optimize the design of the basic low-pass FIR filter by means of a straight nonlinear minimization procedure.

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Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:32 ,  Issue: 3 )