Method of generating test tone signal and test-tone-signal...

Details Method of generating test tone signal and test-tone-signal... Method of generating test tone signal and test-tone-signal...

2006-04-19

2010-06-29

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Including frequency control

Automatic tone control

C381S061000, C333S02800T

Reexamination Certificate

active

07747027

ABSTRACT:
A method of generating a test tone signal includes generating a fundamental tone signal, which is a sinusoidal signal having a predetermined frequency; generating a first group of harmonic tone signals having different frequencies that are integral multiples of the predetermined frequency; generating a second group of the harmonic tone signals having different frequencies that are integral multiples of the predetermined frequency, at least part of the second group of the harmonic tone signals having frequencies different from frequencies of the first group of the harmonic tone signals; adding the fundamental tone signal to the first group of the harmonic tone signals to generate a first test tone signal; adding the fundamental tone signal to the second group of the harmonic tone signals to generate a second test tone signal; and outputting the first and second test tone signals at predetermined intervals.

REFERENCES:
patent: 4215614 (1980-08-01), Chibana
patent: 6134330 (2000-10-01), De Poortere et al.
patent: 6751323 (2004-06-01), Poldy
patent: 6798830 (2004-09-01), Tharakan
patent: 6856796 (2005-02-01), Ding et al.
patent: 7394908 (2008-07-01), Katou et al.
patent: 7550977 (2009-06-01), Quan
patent: 2001/0038702 (2001-11-01), Lavoie et al.
patent: 2005/0058305 (2005-03-01), Yamaki
patent: 2008/0031480 (2008-02-01), Barthel et al.
patent: 1180896 (2002-02-01), None
patent: 1578170 (2005-09-01), None
patent: 2239140 (1991-06-01), None
patent: 2001346299 (2001-12-01), None
European Search Report, EP 06 25 2048, Apr. 9, 2008.

Affiliated with

Also associated with

Rating

Method of generating test tone signal and test-tone-signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of generating test tone signal and test-tone-signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of generating test tone signal and test-tone-signal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4178180