FI118247B - Förfarande för att åstadkomma ett naturligt eller modifierat utrymmesintryck i flerkanallyssning - Google Patents
Förfarande för att åstadkomma ett naturligt eller modifierat utrymmesintryck i flerkanallyssning Download PDFInfo
- Publication number
- FI118247B FI118247B FI20030294A FI20030294A FI118247B FI 118247 B FI118247 B FI 118247B FI 20030294 A FI20030294 A FI 20030294A FI 20030294 A FI20030294 A FI 20030294A FI 118247 B FI118247 B FI 118247B
- Authority
- FI
- Finland
- Prior art keywords
- sound
- channel
- microphone
- speaker
- frequency
- Prior art date
Links
Classifications
-
- 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
-
- 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
- H04S2420/11—Application of ambisonics in stereophonic audio systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
Claims (4)
1. Förfarande för att ästadkomma ett naturligt eller modifierat utrymmesintryck i flerkanallyssning, vid vilket förfarande - impulsresponsen av eller ljudet i utrymmet definieras med i samma punkt belägna en rundupptagande mikrofon (W) och tre ättakopplade mikrofoner (X, Y, Z) soni har riktats ^ - tidsfönster av signaler W, X, Y, Z filtreras tili frekvensband företrädesvis pä basis av frekvensresolutionen av hörseln, och - den riktning varifrän ljudet kommer och eventuellt diffusiviteten under alla tidpunkter räknas frän mikrofonsignaler W, X, Y, Z pä alla frekvensband kännetecknat av att vaije irekvenskanal i en rundupptagande mikrofon W amplitudpanoreras vid flerkanallyssning som tidsfunktion i den riktning som definieras av ljudets estimerade inkomstriktning.
2. Förfarande enligt patentkrav 1, kännetecknat av att vaqe frekvenskanal av en rundupptagande mikrofon W amplitudpanoreras som tidsfunktion i flera riktningar pä basis av den estimerade diffusiviteten t.ex. för att producera ett liknande riktningsintryck som i det reellä akustiska utrymmet.
3. Förfarande enligt nägot av de föregäende patentkraven, kännetecknat av att panorerade ; frekvensband i olika högtalarkanaler kopplas ihop för att räkna impulsresponsen eller ljudsignalen för varje högtalarkanal.
4. Förfarande enligt nägot av de föregäende patentkraven, kännetecknat av att de producerade impulsresponsema används för att producera eko med hjälp av konvolution eller nägot förfarande som gör modell av de producerade impulsresponsema. ··· , -**ψ·Ι' >- -Op -rv.nnFH· tr··
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20030294A FI118247B (sv) | 2003-02-26 | 2003-02-26 | Förfarande för att åstadkomma ett naturligt eller modifierat utrymmesintryck i flerkanallyssning |
PCT/FI2004/000093 WO2004077884A1 (en) | 2003-02-26 | 2004-02-25 | A method for reproducing natural or modified spatial impression in multichannel listening |
JP2006502072A JP4921161B2 (ja) | 2003-02-26 | 2004-02-25 | マルチチャンネルリスニングにおける自然のまたは修正された空間印象を再生するための方法及び装置、並びにその方法を実行するコンピュータープログラム |
US10/547,151 US7787638B2 (en) | 2003-02-26 | 2004-02-25 | Method for reproducing natural or modified spatial impression in multichannel listening |
JP2010125832A JP5431249B2 (ja) | 2003-02-26 | 2010-06-01 | マルチチャンネルリスニングにおける自然のまたは修正された空間印象を再生するための方法及び装置、並びにその方法を実行するコンピュータープログラム |
US12/839,543 US8391508B2 (en) | 2003-02-26 | 2010-07-20 | Method for reproducing natural or modified spatial impression in multichannel listening |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20030294 | 2003-02-26 | ||
FI20030294A FI118247B (sv) | 2003-02-26 | 2003-02-26 | Förfarande för att åstadkomma ett naturligt eller modifierat utrymmesintryck i flerkanallyssning |
Publications (3)
Publication Number | Publication Date |
---|---|
FI20030294A0 FI20030294A0 (sv) | 2003-02-26 |
FI20030294A FI20030294A (sv) | 2004-08-27 |
FI118247B true FI118247B (sv) | 2007-08-31 |
Family
ID=8565727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI20030294A FI118247B (sv) | 2003-02-26 | 2003-02-26 | Förfarande för att åstadkomma ett naturligt eller modifierat utrymmesintryck i flerkanallyssning |
Country Status (4)
Country | Link |
---|---|
US (2) | US7787638B2 (sv) |
JP (2) | JP4921161B2 (sv) |
FI (1) | FI118247B (sv) |
WO (1) | WO2004077884A1 (sv) |
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-
2003
- 2003-02-26 FI FI20030294A patent/FI118247B/sv active IP Right Grant
-
2004
- 2004-02-25 US US10/547,151 patent/US7787638B2/en active Active
- 2004-02-25 JP JP2006502072A patent/JP4921161B2/ja not_active Expired - Lifetime
- 2004-02-25 WO PCT/FI2004/000093 patent/WO2004077884A1/en active Application Filing
-
2010
- 2010-06-01 JP JP2010125832A patent/JP5431249B2/ja not_active Expired - Lifetime
- 2010-07-20 US US12/839,543 patent/US8391508B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2006519406A (ja) | 2006-08-24 |
FI20030294A (sv) | 2004-08-27 |
WO2004077884A1 (en) | 2004-09-10 |
JP4921161B2 (ja) | 2012-04-25 |
US7787638B2 (en) | 2010-08-31 |
JP2010226760A (ja) | 2010-10-07 |
FI20030294A0 (sv) | 2003-02-26 |
US20060171547A1 (en) | 2006-08-03 |
JP5431249B2 (ja) | 2014-03-05 |
US8391508B2 (en) | 2013-03-05 |
US20100322431A1 (en) | 2010-12-23 |
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