Equalization of speech signal in mobile phone

Details Equalization of speech signal in mobile phone Equalization of speech signal in mobile phone

1996-08-30

2000-01-04

Chang, Vivian

Electrical audio signal processing systems and devices

Monitoring of sound

381103, H04R 2900

Patent

active

060118539

ABSTRACT:
The invention relates to equalization in a digital phone, advantageously a mobile phone. According to the invention, the equalization (4) of a reproduced sound is changed according to the operating conditions of the phone. Information about the conditions is obtained by monitoring the sound volume (19) set by the user, measuring the background noise (17) in the operating environment of the phone through the phone's microphone (9) and/or monitoring the quality (16) of the connection between the phone and the communication network. The low frequency emphasis is reduced in a very noisy environment and increased in a quiet environment. The telephone according to the invention is advantageously a mobile phone in a digital cellular network.

REFERENCES:
patent: 4721923 (1988-01-01), Bares et al.
patent: 4761829 (1988-08-01), Lynk, Jr. et al.
patent: 5027410 (1991-06-01), Williamson et al.
patent: 5034984 (1991-07-01), Bose
patent: 5172417 (1992-12-01), Iwamura
patent: 5285165 (1994-02-01), Renfors et al.
patent: 5406635 (1995-04-01), Jarvinen
patent: 5450442 (1995-09-01), Umemoto et al.
patent: 5481615 (1996-01-01), Eatwell et al.
patent: 5509081 (1996-04-01), Kuusama
patent: 5606550 (1997-02-01), Jangi
patent: 5680468 (1997-10-01), Van Hout et al.
patent: 5696819 (1997-12-01), Suizu et al.
patent: 5708722 (1998-01-01), Forgues et al.
Straub A.: Digitale Signalprozessoren, Finke Bausteine in der Mobilfunktechnik Funkschau Jan. 24, 1991, pp. 96-99.
Kontro J. et al.: Digital Car Audio System, IEEE Transactions on Consumer Electronics, vol. 39, No. 3, pp. 514-521, Aug. 1993.

Affiliated with

Also associated with

Rating

Equalization of speech signal in mobile phone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Equalization of speech signal in mobile phone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equalization of speech signal in mobile phone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1078639