通信システムにおける適応信号利得制御のための方法及び装置 - Telefon Akti Bora Get Elm Ericson (Pubble)

Title:

通信システムにおける適応信号利得制御のための方法及び装置

Document Type and Number:

Japanese Patent JP4204754

Kind Code:

B2

Abstract:

Adaptive gain control techniques provide correctly adjusted audio signal levels during the entirety of an Internet telephony conversation and are resilient to background noise and loudspeaker echo. Disclosed techniques can account for multiple near-end speakers, as well as changes in near-end environment. In an exemplary embodiment, an adaptive gain controller includes a gain control processor configured to adjust an analog gain for a microphone output signal based on measurements of the microphone output signal and on measurements of a loudspeaker input signal.

More Like This:

JPS59115629	OUTPUT AMPLIFIER FOR ACTIVE REDUCTION PROTECTING CIRCUIT
WO/2003/107701	METHOD AND DEVICE FOR BACKGROUND MONITORING OF AN AUDIO SOURCE
WO/2016/208797	HEADSET AND METHOD FOR CONTROLLING SAME

Inventors:

Selkvist, patrick
Thomas Svenson
Sundqvist, gym
Ericsson, Andels

Application Number:

JP2000591777A

Publication Date:

January 07, 2009

Filing Date:

December 07, 1999

Export Citation:

Click for automatic bibliography generation Help

Assignee:

Telefon Akti Bora Get Elm Ericson (Pubble)

International Classes:

H04M1/60; H04M1/00; H04M9/08

Domestic Patent References:

JP9172396A
JP8293820A
JP9321833A
JP10098344A

Foreign References:

US5668871
US4700382
US5357567

Attorney, Agent or Firm:

Sonoda Yoshitaka
Kobayashi Yoshinori

Previous Patent: 容器およびその内容物の情報処理検査装置を結合し得る装置

Next Patent: DEVICE AND METHOD OF DETECTING SURFACE POTENTIAL