GB1278884A - A reverberation spring - Google Patents
A reverberation springInfo
- Publication number
- GB1278884A GB1278884A GB39261/70A GB3926170A GB1278884A GB 1278884 A GB1278884 A GB 1278884A GB 39261/70 A GB39261/70 A GB 39261/70A GB 3926170 A GB3926170 A GB 3926170A GB 1278884 A GB1278884 A GB 1278884A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- turns
- reverberation
- periodicity
- aug
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K15/00—Acoustics not otherwise provided for
- G10K15/08—Arrangements for producing a reverberation or echo sound
- G10K15/10—Arrangements for producing a reverberation or echo sound using time-delay networks comprising electromechanical or electro-acoustic devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Springs (AREA)
- Reverberation, Karaoke And Other Acoustics (AREA)
- Golf Clubs (AREA)
Abstract
1278884 Helical springs AKG AKUSTISCHE U KINO-GERATE GmbH 14 Aug 1970 [19 Aug 1969] 39261/70 Heading F2S [Also in Division H4] A helical spring, used in artificial reverberation systems, has randomly selected turns irregularly deformed within the plane of the original turn. Generally if the turn is deformed as in Fig. 1 the stiffness of the spring will be reduced but its moment of inertia increased whereas deformation as in Fig. 2 will give the opposite effects. By deforming a random selection of turns in the ways shown the periodicity in the frequency spectrum in the range below 200 Hz is eliminated leading to a more natural reverberation. The spring in use is subjected to torsional vibration only and its performance may be further improved by etching the spring surface. In a spring of 2000 turns it was necessary to deform 100 turns to eliminate lowfrequency periodicity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT793469A AT292332B (en) | 1969-08-19 | 1969-08-19 | Coil spring for creating artificial reverberation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1278884A true GB1278884A (en) | 1972-06-21 |
Family
ID=3600861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39261/70A Expired GB1278884A (en) | 1969-08-19 | 1970-08-14 | A reverberation spring |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3697059A (en) |
| JP (1) | JPS495653B1 (en) |
| AT (1) | AT292332B (en) |
| AU (1) | AU1796370A (en) |
| BE (1) | BE754949A (en) |
| CH (1) | CH502666A (en) |
| DE (1) | DE2040044C3 (en) |
| FR (1) | FR2057877A5 (en) |
| GB (1) | GB1278884A (en) |
| SE (1) | SE347099B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3934866A (en) * | 1974-10-08 | 1976-01-27 | Waldes Kohinoor, Inc. | Special-purpose spring retaining rings |
| JPS63131190U (en) * | 1987-02-18 | 1988-08-26 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US13699A (en) * | 1855-10-23 | Coal-sifter | ||
| US3389642A (en) * | 1966-06-22 | 1968-06-25 | Kelsey Hayes Co | Power booster for brakes |
-
1969
- 1969-08-19 AT AT793469A patent/AT292332B/en not_active IP Right Cessation
-
1970
- 1970-07-23 AU AU17963/70A patent/AU1796370A/en not_active Expired
- 1970-07-31 FR FR7028322A patent/FR2057877A5/fr not_active Expired
- 1970-08-10 US US62442A patent/US3697059A/en not_active Expired - Lifetime
- 1970-08-12 DE DE2040044A patent/DE2040044C3/en not_active Expired
- 1970-08-13 JP JP45070487A patent/JPS495653B1/ja active Pending
- 1970-08-14 GB GB39261/70A patent/GB1278884A/en not_active Expired
- 1970-08-17 BE BE754949D patent/BE754949A/en unknown
- 1970-08-18 CH CH1234370A patent/CH502666A/en unknown
- 1970-08-18 SE SE11263/70A patent/SE347099B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2040044C3 (en) | 1981-02-26 |
| DE2040044B2 (en) | 1980-05-22 |
| DE2040044A1 (en) | 1971-02-25 |
| CH502666A (en) | 1971-01-31 |
| BE754949A (en) | 1971-02-01 |
| AT292332B (en) | 1971-08-25 |
| AU1796370A (en) | 1972-01-27 |
| FR2057877A5 (en) | 1971-05-21 |
| JPS495653B1 (en) | 1974-02-08 |
| SE347099B (en) | 1972-07-24 |
| US3697059A (en) | 1972-10-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |