FR2269267A1 - Distortion corrector for loudspeaker - senses variation in membrane acceleration to produce correction signal - Google Patents
Distortion corrector for loudspeaker - senses variation in membrane acceleration to produce correction signalInfo
- Publication number
- FR2269267A1 FR2269267A1 FR7414802A FR7414802A FR2269267A1 FR 2269267 A1 FR2269267 A1 FR 2269267A1 FR 7414802 A FR7414802 A FR 7414802A FR 7414802 A FR7414802 A FR 7414802A FR 2269267 A1 FR2269267 A1 FR 2269267A1
- Authority
- FR
- France
- Prior art keywords
- loudspeaker
- variation
- acceleration
- coil
- impedance
- 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.)
- Granted
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
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
This corrector for distortion in loudspeaker output power bases its design upon the fact that the power is constant if the membrane acceleration is constant over the range of audible frequencies. A comparator (c) is connected via filters (F) to the loudspeaker amplifier (A) and a loudspeaker coil-impedance simulator (v) that has an impedance equal to the static coil. In operation, variation of acceleration will be sensed as variation of coil-impedance and suitable error signals generated into an amplifier feedback loop. Filters (F, G) are included to overcome loop phase problems. This design solves the problems previously experienced such as the cost of high quality accelerometers and the bandwith limitations of bridge circuits.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7414802A FR2269267A1 (en) | 1974-04-29 | 1974-04-29 | Distortion corrector for loudspeaker - senses variation in membrane acceleration to produce correction signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7414802A FR2269267A1 (en) | 1974-04-29 | 1974-04-29 | Distortion corrector for loudspeaker - senses variation in membrane acceleration to produce correction signal |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2269267A1 true FR2269267A1 (en) | 1975-11-21 |
FR2269267B1 FR2269267B1 (en) | 1978-12-15 |
Family
ID=9138260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7414802A Granted FR2269267A1 (en) | 1974-04-29 | 1974-04-29 | Distortion corrector for loudspeaker - senses variation in membrane acceleration to produce correction signal |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2269267A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4118600A (en) * | 1976-03-24 | 1978-10-03 | Karl Erik Stahl | Loudspeaker lower bass response using negative resistance and impedance loading |
FR2422309A1 (en) * | 1978-04-04 | 1979-11-02 | Daniere Joannes | Loudspeaker system reproducing bass to treble frequencies - has membranes acceleration measured to provide feedback for loudspeaker and power amplifier |
US5060274A (en) * | 1988-06-10 | 1991-10-22 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Hydrostatic speaker and speaker driver |
US5226089A (en) * | 1990-04-16 | 1993-07-06 | Samsung Electronics Co., Ltd. | Circuit and method for compensating low frequency band for use in a speaker |
US5962540A (en) * | 1994-08-03 | 1999-10-05 | Henkel Kommanditgesellschaft Auf Aktien | One-component or two-component reactive adhesive |
-
1974
- 1974-04-29 FR FR7414802A patent/FR2269267A1/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4118600A (en) * | 1976-03-24 | 1978-10-03 | Karl Erik Stahl | Loudspeaker lower bass response using negative resistance and impedance loading |
FR2422309A1 (en) * | 1978-04-04 | 1979-11-02 | Daniere Joannes | Loudspeaker system reproducing bass to treble frequencies - has membranes acceleration measured to provide feedback for loudspeaker and power amplifier |
US5060274A (en) * | 1988-06-10 | 1991-10-22 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Hydrostatic speaker and speaker driver |
US5226089A (en) * | 1990-04-16 | 1993-07-06 | Samsung Electronics Co., Ltd. | Circuit and method for compensating low frequency band for use in a speaker |
US5962540A (en) * | 1994-08-03 | 1999-10-05 | Henkel Kommanditgesellschaft Auf Aktien | One-component or two-component reactive adhesive |
Also Published As
Publication number | Publication date |
---|---|
FR2269267B1 (en) | 1978-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |