Digital signal processing apparatus for detecting a frequency co

Details Digital signal processing apparatus for detecting a frequency co Digital signal processing apparatus for detecting a frequency co

1991-03-28

1993-02-23

Smith, Jerry

Boots, shoes, and leggings

36472417, G06F 1531

Patent

active

051896346

ABSTRACT:
A digital signal processing apparatus is disclosed. The apparatus is particularly suited for detecting a digital signal containing a frequency component in a noisy environment. It uses a distributed arithmetic concept for hardware realization. The use of specific coefficients and hardware arrangement has resulted in a reduction of memory location requirement. The invention finds the main application in the area of telephony in which detection of a variety of signal tones is required for various operations of telephone functions.

REFERENCES:
patent: 3777130 (1973-12-01), Croisier et al.
patent: 4305133 (1981-12-01), Amada et al.
patent: 4354248 (1982-10-01), Conger et al.
patent: 4450533 (1984-05-01), Petit et al.
patent: 4797846 (1989-01-01), Benkara et al.
patent: 4928258 (1990-05-01), May
IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASSP-22, No. 6, Dec. 1974, entitled "A New Hardware Realization of Digital Filters", by A. Peled and B. Liu, pp. 456-462.

Affiliated with

Also associated with

Rating

Digital signal processing apparatus for detecting a frequency co 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 processing apparatus for detecting a frequency co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital signal processing apparatus for detecting a frequency co will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2211294