Equalization based on digital signal processing in...

Details Equalization based on digital signal processing in... Equalization based on digital signal processing in...

2006-06-09

2010-10-19

Flanders, Andrew C (Department: 2614)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Digital audio data processing system

Reexamination Certificate

active

07818079

ABSTRACT:
This invention relates to a device, a method, a software application program, a software application program product and an audio device for processing a digital signal, wherein the digital signal is separated and downsampled into at least two downsampled subband signals, wherein at least one of the at least two downsampled subband signals is equalized, and wherein the at least two downsampled subband signals are upsampled and combined into a digital output signal.

REFERENCES:
patent: 5892833 (1999-04-01), Maag et al.
patent: 7519538 (2009-04-01), Villemoes et al.
Multi-Level IIR Digital Filters; R. Ansari; IEEE Transactions on Circuits and Systems, vol. CAS-33, No. 3, Mar. 1986.
“Tunable Digital Frequency Response Equalization Filters;” P. Regalia et al; IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASSP-35, No. 1, Jan. 1987.

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