GB2277840B - Circuit for handling a speech signal - Google Patents

Circuit for handling a speech signal

Info

Publication number
GB2277840B
GB2277840B GB9408187A GB9408187A GB2277840B GB 2277840 B GB2277840 B GB 2277840B GB 9408187 A GB9408187 A GB 9408187A GB 9408187 A GB9408187 A GB 9408187A GB 2277840 B GB2277840 B GB 2277840B
Authority
GB
United Kingdom
Prior art keywords
handling
circuit
speech signal
speech
signal
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
GB9408187A
Other versions
GB2277840A (en
GB9408187D0 (en
Inventor
Jari Hagqvist
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.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones 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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Publication of GB9408187D0 publication Critical patent/GB9408187D0/en
Publication of GB2277840A publication Critical patent/GB2277840A/en
Application granted granted Critical
Publication of GB2277840B publication Critical patent/GB2277840B/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 without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/3026—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being discontinuously variable, e.g. controlled by switching
GB9408187A 1993-05-05 1994-04-25 Circuit for handling a speech signal Expired - Fee Related GB2277840B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI932021A FI97001C (en) 1993-05-05 1993-05-05 Switching to process a speech signal

Publications (3)

Publication Number Publication Date
GB9408187D0 GB9408187D0 (en) 1994-06-15
GB2277840A GB2277840A (en) 1994-11-09
GB2277840B true GB2277840B (en) 1997-05-21

Family

ID=8537860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9408187A Expired - Fee Related GB2277840B (en) 1993-05-05 1994-04-25 Circuit for handling a speech signal

Country Status (2)

Country Link
FI (1) FI97001C (en)
GB (1) GB2277840B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19606261C2 (en) * 1996-02-06 1998-04-09 Stage Tec Entwicklungsgesellsc Microphone with assigned amplifier
US6766176B1 (en) 1996-07-23 2004-07-20 Qualcomm Incorporated Method and apparatus for automatically adjusting speaker and microphone gains within a mobile telephone
EP1811660B1 (en) * 1999-03-30 2013-10-09 Qualcomm Incorporated Method and apparatus for automatically adjusting speaker gain within a mobile telephone
ATE367011T1 (en) * 1999-03-30 2007-08-15 Qualcomm Inc METHOD AND APPARATUS FOR AUTOMATICALLY ADJUSTING MICROPHONE AND SPEAKER AMPLIFIER GAIN IN A PORTABLE TELEPHONE
GB2407012B (en) * 2003-09-27 2008-04-23 Motorola Inc Speech communication unit and method of level adjustment therein
JP4241443B2 (en) 2004-03-10 2009-03-18 ソニー株式会社 Audio signal processing apparatus and audio signal processing method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149152A2 (en) * 1984-01-19 1985-07-24 Siemens Aktiengesellschaft Circuit arrangement for a digital level control
GB2166612A (en) * 1982-02-22 1986-05-08 Rca Corp Television receiver with digital AGC
WO1987004877A1 (en) * 1986-02-11 1987-08-13 Joergensen Poul Richter A method and circuit for automatic gain control of a signal
GB2189953A (en) * 1986-04-28 1987-11-04 Gen Electric Plc AGC circuit
EP0271936A1 (en) * 1986-11-14 1988-06-22 Philips Composants Analog-to-digital converter with automatic gain control
US4910515A (en) * 1987-02-25 1990-03-20 Yamaha Corporation Digital signal processing circuit
GB2243443A (en) * 1990-04-17 1991-10-30 Teleco Oilfield Services Inc Nuclear logging apparatus
GB2253314A (en) * 1990-08-24 1992-09-02 Motorola Inc Dual mode automatic gain control

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166612A (en) * 1982-02-22 1986-05-08 Rca Corp Television receiver with digital AGC
EP0149152A2 (en) * 1984-01-19 1985-07-24 Siemens Aktiengesellschaft Circuit arrangement for a digital level control
WO1987004877A1 (en) * 1986-02-11 1987-08-13 Joergensen Poul Richter A method and circuit for automatic gain control of a signal
GB2195847A (en) * 1986-02-11 1988-04-13 Joergensen Poul Richter A method and circuit for automatic gain control of a signal
US4859964A (en) * 1986-02-11 1989-08-22 Jorgensen Poul R Method and circuit for automatic gain control of a signal
GB2189953A (en) * 1986-04-28 1987-11-04 Gen Electric Plc AGC circuit
EP0271936A1 (en) * 1986-11-14 1988-06-22 Philips Composants Analog-to-digital converter with automatic gain control
US4910515A (en) * 1987-02-25 1990-03-20 Yamaha Corporation Digital signal processing circuit
GB2243443A (en) * 1990-04-17 1991-10-30 Teleco Oilfield Services Inc Nuclear logging apparatus
GB2253314A (en) * 1990-08-24 1992-09-02 Motorola Inc Dual mode automatic gain control

Also Published As

Publication number Publication date
FI97001C (en) 1996-09-25
GB2277840A (en) 1994-11-09
FI932021A0 (en) 1993-05-05
FI932021A (en) 1994-12-01
GB9408187D0 (en) 1994-06-15
FI97001B (en) 1996-06-14

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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