BR0312826A - Circuito de controle e método para uma adaptação de resposta de frequencia dependente de informação da intensidade do sinal de um sinal de áudio para um transdutor eletrodinâmico, e, terminal de telecomunicação móvel - Google Patents

Circuito de controle e método para uma adaptação de resposta de frequencia dependente de informação da intensidade do sinal de um sinal de áudio para um transdutor eletrodinâmico, e, terminal de telecomunicação móvel

Info

Publication number
BR0312826A
BR0312826A BR0312826-1A BR0312826A BR0312826A BR 0312826 A BR0312826 A BR 0312826A BR 0312826 A BR0312826 A BR 0312826A BR 0312826 A BR0312826 A BR 0312826A
Authority
BR
Brazil
Prior art keywords
audio signal
signal
signal strength
control circuit
strength information
Prior art date
Application number
BR0312826-1A
Other languages
English (en)
Inventor
Thomas Lechner
Original Assignee
Sony Ericsson Mobile Comm Ab
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 Sony Ericsson Mobile Comm Ab filed Critical Sony Ericsson Mobile Comm Ab
Publication of BR0312826A publication Critical patent/BR0312826A/pt

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
    • H04R25/356—Amplitude, e.g. amplitude shift or compression

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Selective Calling Equipment (AREA)
  • Amplifiers (AREA)

Abstract

"CIRCUITO DE CONTROLE E MéTODO PARA UMA ADAPTAçãO DE RESPOSTA DE FREQuêNCIA DEPENDENTE DE INFORMAçãO DA INTENSIDADE DO SINAL DE UM SINAL DE áUDIO PARA UM TRANSDUTOR ELETRODINâMICO, E, TERMINAL DE TELECOMUNICAçãO MóVEL". é descrito um circuito de controle para uma adaptação de resposta de freq³ência dependente de informação de intensidade do sinal de um sinal de áudio para um transdutor eletrodinâmico (4), com um dispositivo de determinação de informação de intensidade do sinal (2, 6) para determinar uma informação de intensidade do sinal de acordo com o nível de sinal de áudio, e um dispositivo modificador (3) para modificar seletivamente a freq³ência do sinal de áudio em resposta à informação da intensidade do sinal, de maneira tal que o transdutor eletrodinâmico (4) converta o sinal de áudio em um sinal de som de baixa distorção para altos níveis de sinal de áudio, e com uma resposta de freq³ência uniforme para baixos níveis de sinal de áudio, por meio do que uma faixa de freq³ência mais baixa do sinal de áudio é modificada, com um ganho diferente de um ganho de uma faixa de freq³ência mais alta do sinal de áudio, e uma freq³ência que separa a faixa de menor freq³ência da faixa de maior freq³ência é deslocada para valores mais altos para um nível crescente do sinal de áudio, e para valores mais baixos para um nível decrescente do sinal de áudio. A presente invenção propõe adicionalmente um terminal de telecomunicação móvel com um circuito de controle projetado de maneira correspondente.
BR0312826-1A 2002-08-05 2003-05-28 Circuito de controle e método para uma adaptação de resposta de frequencia dependente de informação da intensidade do sinal de um sinal de áudio para um transdutor eletrodinâmico, e, terminal de telecomunicação móvel BR0312826A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02017613A EP1397024B1 (en) 2002-08-05 2002-08-05 Control circuit for small electrodynamic transducers in audio systems depending on the input signal characteristics
PCT/EP2003/005648 WO2004016040A1 (en) 2002-08-05 2003-05-28 Signal strength information dependent control of small electrodynamic transducers in audio systems

Publications (1)

Publication Number Publication Date
BR0312826A true BR0312826A (pt) 2005-04-19

Family

ID=31502691

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0312826-1A BR0312826A (pt) 2002-08-05 2003-05-28 Circuito de controle e método para uma adaptação de resposta de frequencia dependente de informação da intensidade do sinal de um sinal de áudio para um transdutor eletrodinâmico, e, terminal de telecomunicação móvel

Country Status (9)

Country Link
US (1) US7764796B2 (pt)
EP (1) EP1397024B1 (pt)
JP (1) JP4177328B2 (pt)
CN (1) CN1672462B (pt)
AT (1) ATE438265T1 (pt)
AU (1) AU2003282789A1 (pt)
BR (1) BR0312826A (pt)
DE (1) DE60233131D1 (pt)
WO (1) WO2004016040A1 (pt)

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Also Published As

Publication number Publication date
JP2005536096A (ja) 2005-11-24
WO2004016040A1 (en) 2004-02-19
CN1672462B (zh) 2011-10-19
JP4177328B2 (ja) 2008-11-05
ATE438265T1 (de) 2009-08-15
EP1397024A1 (en) 2004-03-10
AU2003282789A1 (en) 2004-02-25
DE60233131D1 (de) 2009-09-10
EP1397024B1 (en) 2009-07-29
US20060153403A1 (en) 2006-07-13
CN1672462A (zh) 2005-09-21
US7764796B2 (en) 2010-07-27

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