JPS6424662A - Voice conference equipment - Google Patents

Voice conference equipment

Info

Publication number
JPS6424662A
JPS6424662A JP18164387A JP18164387A JPS6424662A JP S6424662 A JPS6424662 A JP S6424662A JP 18164387 A JP18164387 A JP 18164387A JP 18164387 A JP18164387 A JP 18164387A JP S6424662 A JPS6424662 A JP S6424662A
Authority
JP
Japan
Prior art keywords
microphone
signal
section
maximum output
reception
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.)
Granted
Application number
JP18164387A
Other languages
Japanese (ja)
Other versions
JPH0461545B2 (en
Inventor
Hiroshi Oikawa
Masakazu Nishino
Shoji Makino
Takashi Saeki
Naohide Kushige
Shigenobu Minami
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.)
Toshiba Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Toshiba Corp
Nippon Telegraph and Telephone Corp
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 Toshiba Corp, Nippon Telegraph and Telephone Corp filed Critical Toshiba Corp
Priority to JP18164387A priority Critical patent/JPS6424662A/en
Publication of JPS6424662A publication Critical patent/JPS6424662A/en
Publication of JPH0461545B2 publication Critical patent/JPH0461545B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE:To attain proper adaptive learning corresponding to the secular change in the echo path by making only a microphone giving a voice signal of a maximum output level effective at the transmission and permitting the echo cancelling section to learn at the reception. CONSTITUTION:A switch control section 8, in case of discriminating the transmission state, sends a signal instructing a microphone outputting a voice signal of a maximum output level except a microphone with priority and the said priority microphone itself to a switch section 7 via a signal line 10A. The switch section 7 passes an output of the microphone subject to command and gives a loss so as not to pass the output of other microphones. On the other hand, in discriminating the reception state, the switching control section 8 outputs a signal representing a microphone outputting a voice signal of the maximum output level to the switch section 7 and gives a signal permitting the learning to the echo cancel section 4 via a signal line 10B corresponding to the reception input signal level more than a prescribed value.
JP18164387A 1987-07-21 1987-07-21 Voice conference equipment Granted JPS6424662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18164387A JPS6424662A (en) 1987-07-21 1987-07-21 Voice conference equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18164387A JPS6424662A (en) 1987-07-21 1987-07-21 Voice conference equipment

Publications (2)

Publication Number Publication Date
JPS6424662A true JPS6424662A (en) 1989-01-26
JPH0461545B2 JPH0461545B2 (en) 1992-10-01

Family

ID=16104336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18164387A Granted JPS6424662A (en) 1987-07-21 1987-07-21 Voice conference equipment

Country Status (1)

Country Link
JP (1) JPS6424662A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009290483A (en) * 2008-05-28 2009-12-10 Casio Hitachi Mobile Communications Co Ltd Noise canceling apparatus, noise canceling method, and computer program
JP2022528683A (en) * 2019-09-24 2022-06-15 ▲騰▼▲訊▼科技（深▲セン▼）有限公司 Voice call methods and their devices, electronic devices and computer programs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009290483A (en) * 2008-05-28 2009-12-10 Casio Hitachi Mobile Communications Co Ltd Noise canceling apparatus, noise canceling method, and computer program
JP2022528683A (en) * 2019-09-24 2022-06-15 ▲騰▼▲訊▼科技（深▲セン▼）有限公司 Voice call methods and their devices, electronic devices and computer programs
US11875808B2 (en) 2019-09-24 2024-01-16 Tencent Technology (Shenzhen) Company Limited Voice call method and apparatus, electronic device, and computer-readable storage medium

Also Published As

Publication number Publication date
JPH0461545B2 (en) 1992-10-01

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees
R154 Certificate of patent or utility model (reissue)

Free format text: JAPANESE INTERMEDIATE CODE: R154