JPH0586719B2 - - Google Patents

Info

Publication number
JPH0586719B2
JPH0586719B2 JP59123064A JP12306484A JPH0586719B2 JP H0586719 B2 JPH0586719 B2 JP H0586719B2 JP 59123064 A JP59123064 A JP 59123064A JP 12306484 A JP12306484 A JP 12306484A JP H0586719 B2 JPH0586719 B2 JP H0586719B2
Authority
JP
Japan
Prior art keywords
howling
output
frequency
low
pass filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP59123064A
Other languages
English (en)
Japanese (ja)
Other versions
JPS612496A (ja
Inventor
Satoru Ibaraki
Hiromoto Furukawa
Hiroyuki Naono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP59123064A priority Critical patent/JPS612496A/ja
Priority to US06/719,740 priority patent/US4747132A/en
Publication of JPS612496A publication Critical patent/JPS612496A/ja
Publication of JPH0586719B2 publication Critical patent/JPH0586719B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/21—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a set of bandfilters

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Circuit For Audible Band Transducer (AREA)
JP59123064A 1984-04-09 1984-06-15 ハウリング抑圧装置 Granted JPS612496A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP59123064A JPS612496A (ja) 1984-06-15 1984-06-15 ハウリング抑圧装置
US06/719,740 US4747132A (en) 1984-04-09 1985-04-03 Howling canceller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59123064A JPS612496A (ja) 1984-06-15 1984-06-15 ハウリング抑圧装置

Publications (2)

Publication Number Publication Date
JPS612496A JPS612496A (ja) 1986-01-08
JPH0586719B2 true JPH0586719B2 (enrdf_load_stackoverflow) 1993-12-14

Family

ID=14851301

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59123064A Granted JPS612496A (ja) 1984-04-09 1984-06-15 ハウリング抑圧装置

Country Status (1)

Country Link
JP (1) JPS612496A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3875189B2 (ja) * 2002-12-17 2007-01-31 ティーオーエー株式会社 ハウリング抑制装置

Also Published As

Publication number Publication date
JPS612496A (ja) 1986-01-08

Similar Documents

Publication Publication Date Title
US4908855A (en) Electronic telephone terminal having noise suppression function
KR100715139B1 (ko) 마이크로폰의 캘리브레이션을 위한 장치 및 방법
JPH09135194A (ja) 電話装置及び該電話装置により再生される音の品質と明瞭度とを改善する方法
KR20040019362A (ko) 후처리기로서 멀티 마이크로폰 에코 억제기를 가지는 음향보강 시스템
EP1860911A1 (en) System and method for improving communication in a room
US4747132A (en) Howling canceller
JPH10341190A (ja) エコー消去システム及び方法、並びに移動通信装置
WO2005064908A1 (en) System and method for enchanced subjective stereo audio
US20070172080A1 (en) Acoustic feedback suppression
CN108429996A (zh) 有源噪声控制方法、电路及相关设备
CN112840670A (zh) 媒体补偿直通装置中的动态环境叠加不稳定性检测及抑制
JP4189042B2 (ja) 拡声通話機
EP1730992A1 (en) Hearing aid with anti feedback system
JPH0586719B2 (enrdf_load_stackoverflow)
JPH05241582A (ja) ノイズキャンセラ
JP2894001B2 (ja) 消音装置
EP0929174A2 (en) Voice switching system capable of improving a quality of conversation
JPS631296A (ja) ハウリング抑圧装置
JP3358463B2 (ja) 拡声装置
JPH0586718B2 (enrdf_load_stackoverflow)
Reas et al. On The Achievable Amplification of the Low Order NLMS Based Adaptive Feedback Canceller for Public Address System
JPH0830959B2 (ja) 消音装置
JPH0564290A (ja) 収音装置
JPH0586720B2 (enrdf_load_stackoverflow)
CN118233799A (zh) 一种主动降噪调节方法和耳机