ATE467316T1 - Spatially robust audio pre-compensation - Google Patents
Spatially robust audio pre-compensationInfo
- Publication number
- ATE467316T1 ATE467316T1 AT08102812T AT08102812T ATE467316T1 AT E467316 T1 ATE467316 T1 AT E467316T1 AT 08102812 T AT08102812 T AT 08102812T AT 08102812 T AT08102812 T AT 08102812T AT E467316 T1 ATE467316 T1 AT E467316T1
- Authority
- AT
- Austria
- Prior art keywords
- filter
- causal
- minimum phase
- impulse response
- response
- Prior art date
Links
Classifications
-
- 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
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/307—Frequency adjustment, e.g. tone control
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Circuit For Audible Band Transducer (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
A discrete-time audio precompensation filter is designed based on a linear model that describes the dynamic response of a sound generating system at p > 1 listening positions. The filter construction is based on providing information (S2) representative of n non-minimum phase zeros { z i } that are outside of the stability region l z l = 1 in the complex frequency domain. A causal Finite Impulse Response (FIR) filter, of user-specified degree d , having coefficients corresponding to a causal part of a delayed non-causal impulse response is determined (S4) based on the information representative of n non-minimum phase zeros. The resulting precompensation filter is determined (S5) as the product of at least two scalar dynamic systems, represented by an inverse of a characteristic scalar magnitude response (S3) in the frequency domain that represents the power gains at the listening positions, and the causal Finite Impulse Response (FIR) filter designed (S4) to approximately invert only non-minimum phase zeros that can be safely inverted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08102812A EP2104374B1 (en) | 2008-03-20 | 2008-03-20 | Spatially robust audio precompensation |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE467316T1 true ATE467316T1 (en) | 2010-05-15 |
Family
ID=39672149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT08102812T ATE467316T1 (en) | 2008-03-20 | 2008-03-20 | Spatially robust audio pre-compensation |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2104374B1 (en) |
AT (1) | ATE467316T1 (en) |
DE (1) | DE602008001155D1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2595896C2 (en) * | 2012-03-22 | 2016-08-27 | Дирак Рисерч Аб | Circuit of preliminary controller of correcting audio using alternating supporting set of loudspeakers |
US8970455B2 (en) | 2012-06-28 | 2015-03-03 | Google Technology Holdings LLC | Systems and methods for processing content displayed on a flexible display |
US9426600B2 (en) * | 2012-07-06 | 2016-08-23 | Dirac Research Ab | Audio precompensation controller design with pairwise loudspeaker channel similarity |
US8798283B2 (en) | 2012-11-02 | 2014-08-05 | Bose Corporation | Providing ambient naturalness in ANR headphones |
US9020160B2 (en) * | 2012-11-02 | 2015-04-28 | Bose Corporation | Reducing occlusion effect in ANR headphones |
CN108337015B (en) * | 2017-12-26 | 2019-09-20 | 武汉船舶通信研究所(中国船舶重工集团公司第七二二研究所) | A kind of pseudo-code method for catching and device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7215787B2 (en) * | 2002-04-17 | 2007-05-08 | Dirac Research Ab | Digital audio precompensation |
JP4496186B2 (en) * | 2006-01-23 | 2010-07-07 | 株式会社神戸製鋼所 | Sound source separation device, sound source separation program, and sound source separation method |
JP2007279517A (en) * | 2006-04-10 | 2007-10-25 | Kobe Steel Ltd | Sound source separating device, program for sound source separating device, and sound source separating method |
-
2008
- 2008-03-20 EP EP08102812A patent/EP2104374B1/en active Active
- 2008-03-20 AT AT08102812T patent/ATE467316T1/en not_active IP Right Cessation
- 2008-03-20 DE DE602008001155T patent/DE602008001155D1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2104374A1 (en) | 2009-09-23 |
DE602008001155D1 (en) | 2010-06-17 |
EP2104374B1 (en) | 2010-05-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |