Digital tone control arrangement

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G06F 738

Patent

active

045802378

ABSTRACT:
Digital tone control arrangement for a digital audio signal, comprising a recursive digital filter whose transfer function contains as many poles as there are zeros, the recursive filter also comprising a recursive portion and a non-recursive portion each receiving filter coefficients which are stored in a memory means. So as to limit the total number of filter coefficients the memory means is divided into a first memory field for storing a first sub-group of filter coefficients and into a number of second memory fields in each of which a second subgroup of filter coefficients is stored. By means of a switching device the first subgroup of the filter coefficients is applied either to the non-recursive portion or to the recursive portion and a selected second subgroup of filter coefficients is applied to that portion (recursive and the non-recursive) to which the first subgroup of filter coefficients is not applied.

REFERENCES:
patent: 3619586 (1971-11-01), Hoff, Jr. et al.
patent: 4034196 (1977-07-01), Butterweck et al.
patent: 4117541 (1978-09-01), Ali
patent: 4223389 (1980-09-01), Amada et al.
patent: 4305133 (1981-12-01), Amada et al.
patent: 4322810 (1982-03-01), Nakayama
patent: 4422156 (1983-12-01), Sano
patent: 4467440 (1984-08-01), Sano et al.
patent: 4489391 (1984-12-01), Morikawa
McNally: "Microprocessor Mixing and Processing of Digital Audio Signals"; Journal of the Audio Engineering Society, vol. 27, No. 10, pp. 793-803, Oct. 1979.
Hirata: "Digitalization of Conventional Analog Filters for Recording Use"; Journal of the Audio Engineering Society, vol. 29, No. 5, pp. 333-337; May 1981.
Oppenheim et al.: Digital Signal Processing; Inc. (1975), Prentice Hall.
Rabiner et al.: "Terminology in Digital Signal Processing"; IEEE Trans. on Audio and Electroacoustics, vol. AU-20, pp. 322-337, Dec. 1972.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Digital tone control arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital tone control arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital tone control arrangement will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1088537

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.