GB2214013B - Sound level control equipment - Google Patents

Sound level control equipment

Info

Publication number
GB2214013B
GB2214013B GB8900754A GB8900754A GB2214013B GB 2214013 B GB2214013 B GB 2214013B GB 8900754 A GB8900754 A GB 8900754A GB 8900754 A GB8900754 A GB 8900754A GB 2214013 B GB2214013 B GB 2214013B
Authority
GB
United Kingdom
Prior art keywords
control equipment
level control
sound level
sound
equipment
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 - Fee Related
Application number
GB8900754A
Other versions
GB2214013A (en
GB8900754D0 (en
Inventor
Nigel Watterton
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.)
Hazel Grove Music Co Ltd
Original Assignee
Hazel Grove Music 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
Priority claimed from GB888800829A external-priority patent/GB8800829D0/en
Priority claimed from GB888805658A external-priority patent/GB8805658D0/en
Application filed by Hazel Grove Music Co Ltd filed Critical Hazel Grove Music Co Ltd
Publication of GB8900754D0 publication Critical patent/GB8900754D0/en
Publication of GB2214013A publication Critical patent/GB2214013A/en
Application granted granted Critical
Publication of GB2214013B publication Critical patent/GB2214013B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
GB8900754A 1988-01-14 1989-01-13 Sound level control equipment Expired - Fee Related GB2214013B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888800829A GB8800829D0 (en) 1988-01-14 1988-01-14 Sound level control equipment
GB888805658A GB8805658D0 (en) 1988-03-10 1988-03-10 Sound level control equipment

Publications (3)

Publication Number Publication Date
GB8900754D0 GB8900754D0 (en) 1989-03-08
GB2214013A GB2214013A (en) 1989-08-23
GB2214013B true GB2214013B (en) 1992-04-22

Family

ID=26293322

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8900754A Expired - Fee Related GB2214013B (en) 1988-01-14 1989-01-13 Sound level control equipment

Country Status (1)

Country Link
GB (1) GB2214013B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2238680B (en) * 1989-12-01 1994-01-26 Hazel Grove Music Co Ltd Sound level control equipment
GB2257317A (en) * 1991-06-26 1993-01-06 Damian Rupert Lindley Automatic volume control for car stereo
US6805633B2 (en) * 2002-08-07 2004-10-19 Bally Gaming, Inc. Gaming machine with automatic sound level adjustment and method therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1518574A (en) * 1976-06-02 1978-07-19 Mueller U Sound reproducing system
GB2051510A (en) * 1979-06-15 1981-01-14 Communications Patents Ltd Gain controlled audio amplifier system
US4322579A (en) * 1979-02-26 1982-03-30 U.S. Philips Corporation Sound reproduction in a space with an independent sound source

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1518574A (en) * 1976-06-02 1978-07-19 Mueller U Sound reproducing system
US4322579A (en) * 1979-02-26 1982-03-30 U.S. Philips Corporation Sound reproduction in a space with an independent sound source
GB2051510A (en) * 1979-06-15 1981-01-14 Communications Patents Ltd Gain controlled audio amplifier system

Also Published As

Publication number Publication date
GB2214013A (en) 1989-08-23
GB8900754D0 (en) 1989-03-08

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960113