Digital signal processor for audio applications

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

364768, G06F 738, G06F 750

Patent

active

055174361

ABSTRACT:
A digital signal processor for efficiently handling audio applications is disclosed. The single chip digital signal processor includes an on-chip instruction memory for outputting instructions representing an audio application program. Four busses, W, X, Y and Z, provide communication within the processor. An ALU performs a plurality of arithmetic and logical functions according to the instruction memory. Specialized implementations for functions have been specially developed for audio applications, for example, a single cycle average instruction, a jump on condition code instruction, a repeat instruction, a limit instruction. A Multiplier Accumulator/Barrel Shifter performs a plurality of MAC and shifting functions according to the instruction memory. The MAC/BS is coupled in parallel with the ALU and an Address Generator. The Address Generator performs a plurality of address calculation functions according to the instruction memory. Some of the data storage areas include: 1) a GPR memory for writing data to the X and Y busses and reading data from the Z bus; 2) an AOR memory for writing data to the W, X, and Y busses and reading data from the Z bus; and 3) an SPR memory for writing data to and reading data from the X, Y and Z busses and for outputting control information to the ALU, the MAC/BS and the AGEN.

REFERENCES:
patent: 4811267 (1989-03-01), Ando et al.
patent: 4817047 (1989-03-01), Nishitani et al.
patent: 5140543 (1992-08-01), Tanaka
patent: 5208770 (1993-05-01), Ito
patent: 5260897 (1993-11-01), Toriumi et al.
patent: 5311458 (1994-05-01), Haines
patent: 5347480 (1994-04-01), Asghar et al.
Philips brochure of Electronic components and materials, "PCB 5010/PCB 5011 Programmable DSPs", cover, pp, 2-7 and p. 48 which reflcets date of Feb. 1986.
Y. Matsushita et al., "A 32/24 Bit Digital Audio Signal Processor," IEEE Transactions on Consumer Electronics, vol. 35, No. 4, at pp. 785-792 (Nov. 1989).
R. J. Gredin, "The NEC uPD77230 Advanced Signal Processor", presented at Mini/Micro Northeast-86, pp. 1-6 (1986).
"ADSP-2100 Internal Architecture" from ADSP-2100 Seminar of Analog Devices, Inc., Cover, Contents page and pp. 2-5 to 2-14 (1986).
Motorola DSP56000 Digital Signal Processor User's Manual, Chapter 3: Chip Architecture, cover, copyright page, pp. 3-1 to 3-17 (1986).
Texas Instruments TMC57000/57001 Digital Audio Signal Processor User's Manual, cover & pp. 2-1 to 2-20 (1990).
Texas Instruments TMS320C3x User's Guide, Chapter 2: Architectural Overview, cover and pp. 2-1 to 2-26 (1990).
Analog Devices ADSP-2100 User's Manual, cover, copyright page and pp. 1-1 to 2-34 (1986).
Sony Computer Audio/Video Semiconductor Data Book 1992, Index page and "CXD1160AP/AQ Digital Audio signal processing LSI" at pp. 299-300 (1992).
Dream "SAM8905 digital sound generator/processor for musical applications" User's Manual, cover and pp. 6-7 (Jun. 1991).
AT&T Preliminary Data Sheet WE DSP32 Digital Signal Processor, pp. 1-4 (Apr. 1986).

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 signal processor for audio applications 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 signal processor for audio applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital signal processor for audio applications will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1901623

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