JPS57185794A - Digital speaker system - Google Patents
Digital speaker systemInfo
- Publication number
- JPS57185794A JPS57185794A JP7015581A JP7015581A JPS57185794A JP S57185794 A JPS57185794 A JP S57185794A JP 7015581 A JP7015581 A JP 7015581A JP 7015581 A JP7015581 A JP 7015581A JP S57185794 A JPS57185794 A JP S57185794A
- Authority
- JP
- Japan
- Prior art keywords
- point
- speaker
- distance
- delay
- conversion
- 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.)
- Pending
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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/005—Details of transducers, loudspeakers or microphones using digitally weighted transducing elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
PURPOSE:To make acoustic D/A conversion at arbitrary points, independently of the arrangement of each speaker, by supplying bit signals driving each speaker with a suitable delay. CONSTITUTION:A shift register is used as a delay circuit 12i. When a listening area is determined to a point P, the delay time of a dely circuit 121 is set as (Xk-X1)/V=DELTAX1/V(t), where Xk is a distance between a speaker 14k at the remotest position to the point P, X1 is a distance between a speaker 141 and the point P, and V is the sound velocity at the propagation area, and similarly the delay time of each delay circuit is set. Thus, even if the point P is at unequal distance from each speaker, the sound pressure from each speaker is at the same phase at the point P and the acoustic D/A conversion is caused. As to a point Q, a distance Y1 from the speaker 141 to the point Q ia taken as a reference and the same processing can be made as the case with the point P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7015581A JPS57185794A (en) | 1981-05-12 | 1981-05-12 | Digital speaker system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7015581A JPS57185794A (en) | 1981-05-12 | 1981-05-12 | Digital speaker system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57185794A true JPS57185794A (en) | 1982-11-16 |
Family
ID=13423398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7015581A Pending JPS57185794A (en) | 1981-05-12 | 1981-05-12 | Digital speaker system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57185794A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190270A (en) * | 1988-01-25 | 1989-07-31 | Fuji Electric Co Ltd | Ultrasonic motor |
| JPH01119296U (en) * | 1988-02-04 | 1989-08-11 | ||
| WO2016193327A1 (en) * | 2015-06-01 | 2016-12-08 | Universite Du Maine | Digital loudspeaker |
-
1981
- 1981-05-12 JP JP7015581A patent/JPS57185794A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01190270A (en) * | 1988-01-25 | 1989-07-31 | Fuji Electric Co Ltd | Ultrasonic motor |
| JPH01119296U (en) * | 1988-02-04 | 1989-08-11 | ||
| WO2016193327A1 (en) * | 2015-06-01 | 2016-12-08 | Universite Du Maine | Digital loudspeaker |
| JP2018518110A (en) * | 2015-06-01 | 2018-07-05 | ユニベルシテ ドゥ メーヌ | Digital speaker |
| US10484765B2 (en) | 2015-06-01 | 2019-11-19 | Universite Du Maine | Digital loudspeaker |
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