BRPI0518278A2 - cÁlculo e ajuste do equilÍbrio de sonoridade percebida e/ou espectral percebida de um sinal de Áudio - Google Patents
cÁlculo e ajuste do equilÍbrio de sonoridade percebida e/ou espectral percebida de um sinal de ÁudioInfo
- Publication number
- BRPI0518278A2 BRPI0518278A2 BRPI0518278-6A BRPI0518278A BRPI0518278A2 BR PI0518278 A2 BRPI0518278 A2 BR PI0518278A2 BR PI0518278 A BRPI0518278 A BR PI0518278A BR PI0518278 A2 BRPI0518278 A2 BR PI0518278A2
- Authority
- BR
- Brazil
- Prior art keywords
- perceived
- audio signal
- calculation
- adjustment
- sound balance
- Prior art date
Links
- 238000004364 calculation method Methods 0.000 title abstract 3
- 230000005236 sound signal Effects 0.000 title abstract 3
- 230000003595 spectral effect Effects 0.000 title abstract 3
- 238000004590 computer program Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000008447 perception Effects 0.000 abstract 1
Classifications
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- 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
-
- 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
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L21/0232—Processing in the frequency domain
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/21—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being power information
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- 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
-
- 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
- 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
- H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
- H03G9/14—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for gain control and tone control
-
- 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
- H03G9/20—Combinations of two or more types of control, e.g. gain control and tone control in frequency-selective amplifiers
- H03G9/24—Combinations of two or more types of control, e.g. gain control and tone control in frequency-selective amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/03—Application of parametric coding in stereophonic audio systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- Quality & Reliability (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Circuit For Audible Band Transducer (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
CÁLCULO E AJUSTE DO EQUILÍBRIO DE SONORIDADE PERCEBIDA E/OU ESPECTRAL PERCEBIDA DE UM SINAL DE ÁUDIO. A invenção refere-se à medição e ao controle do equilíbrio de intensidade sonora percebida e/ou espectral percebido de um sinal de áudio. Um sinal de áudio é modificado em resposta aos cálculos realizados, pelo menos em parte, no domínio de sonoridade (psicoacústica) de percepção. A invenção é útil, por exemplo, em um ou mais: controle de volume de compensação de sonoridade, controle de ganho automático, controle de faixa dinâmica (que inclui, por exemplo, límítadores, compressores, expansores, etc.), equalização dinâmica e compensação para interferência de ruido de fundo em um ambiente de reprodução de áudio. A invenção inclui não somente métodos, mas também programas e aparelhos computacionaís correspondentes.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US62245804P | 2004-10-26 | 2004-10-26 | |
US60/622,458 | 2004-10-26 | ||
US63860704P | 2004-12-21 | 2004-12-21 | |
US60/638,607 | 2004-12-21 | ||
PCT/US2005/038579 WO2006047600A1 (en) | 2004-10-26 | 2005-10-25 | Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal |
Publications (2)
Publication Number | Publication Date |
---|---|
BRPI0518278A2 true BRPI0518278A2 (pt) | 2008-11-11 |
BRPI0518278B1 BRPI0518278B1 (pt) | 2018-04-24 |
Family
ID=35788286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0518278-6A BRPI0518278B1 (pt) | 2004-10-26 | 2005-10-25 | Método e aparelho para controlar uma característica de sonoridade particular de um sinal de áudio |
Country Status (12)
Country | Link |
---|---|
US (23) | US8090120B2 (pt) |
EP (2) | EP2262108B1 (pt) |
JP (1) | JP5101292B2 (pt) |
KR (1) | KR101261212B1 (pt) |
CN (1) | CN101048935B (pt) |
AU (1) | AU2005299410B2 (pt) |
BR (1) | BRPI0518278B1 (pt) |
CA (1) | CA2581810C (pt) |
HK (1) | HK1103936A1 (pt) |
IL (1) | IL182097A (pt) |
MX (1) | MX2007005027A (pt) |
WO (1) | WO2006047600A1 (pt) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9820044B2 (en) | 2009-08-11 | 2017-11-14 | Dts Llc | System for increasing perceived loudness of speakers |
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