GB1420201A - Method and apparatus for producing sound - Google Patents
Method and apparatus for producing soundInfo
- Publication number
- GB1420201A GB1420201A GB6104371A GB6104371A GB1420201A GB 1420201 A GB1420201 A GB 1420201A GB 6104371 A GB6104371 A GB 6104371A GB 6104371 A GB6104371 A GB 6104371A GB 1420201 A GB1420201 A GB 1420201A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dec
- office
- fed
- frequency bands
- sound
- 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
1420201 Modifying acoustics ELECTRONIC ACOUSTIC CONDITIONING Ltd 8 Dec 1972 [31 Dec 1971] 61043/71 Heading G5X To give a desired degree of privacy of conversation to a person in one part of an office, sound having a wide range of frequencies with a peak in the region of 800 Hz to 1600 Hz is fed to other parts of the office. The output of a white noise generator A, Fig. 3, is divided into separate frequency bands by high and low pass filters D1-D6 and E1-E6 respectively, the gain of each band being adjustable at F1-F6. The recombined signals are fed to loudspeakers or transducers K1-K4 coupled to structural panels or room dividers. A scheme is described for calculating the relative intensities in different frequency bands. A fire alarm and/or a public address system may be added.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6104371A GB1420201A (en) | 1971-12-31 | 1971-12-31 | Method and apparatus for producing sound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB6104371A GB1420201A (en) | 1971-12-31 | 1971-12-31 | Method and apparatus for producing sound |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1420201A true GB1420201A (en) | 1976-01-07 |
Family
ID=10486526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6104371A Expired GB1420201A (en) | 1971-12-31 | 1971-12-31 | Method and apparatus for producing sound |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1420201A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4054751A (en) * | 1976-03-01 | 1977-10-18 | Cdf Industries, Inc. | Masking noise generator |
US4098370A (en) * | 1975-07-14 | 1978-07-04 | Mcgregor Howard Norman | Vibration masking noise system |
US4280019A (en) * | 1977-12-06 | 1981-07-21 | Herman Miller, Inc. | Combination acoustic conditioner and light fixture |
US4319088A (en) * | 1979-11-01 | 1982-03-09 | Commercial Interiors, Inc. | Method and apparatus for masking sound |
US7194094B2 (en) | 2001-10-24 | 2007-03-20 | Acentech, Inc. | Sound masking system |
US9820040B2 (en) | 2001-10-24 | 2017-11-14 | Cambridge Sound Management, Inc. | Sound masking system |
-
1971
- 1971-12-31 GB GB6104371A patent/GB1420201A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4098370A (en) * | 1975-07-14 | 1978-07-04 | Mcgregor Howard Norman | Vibration masking noise system |
US4054751A (en) * | 1976-03-01 | 1977-10-18 | Cdf Industries, Inc. | Masking noise generator |
US4280019A (en) * | 1977-12-06 | 1981-07-21 | Herman Miller, Inc. | Combination acoustic conditioner and light fixture |
US4319088A (en) * | 1979-11-01 | 1982-03-09 | Commercial Interiors, Inc. | Method and apparatus for masking sound |
US7194094B2 (en) | 2001-10-24 | 2007-03-20 | Acentech, Inc. | Sound masking system |
US9820040B2 (en) | 2001-10-24 | 2017-11-14 | Cambridge Sound Management, Inc. | Sound masking system |
US10555078B2 (en) | 2001-10-24 | 2020-02-04 | Cambridge Sound Management, Inc. | Sound masking system |
US11700483B2 (en) | 2001-10-24 | 2023-07-11 | Cambridge Sound Management, Inc. | Sound masking system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4476572A (en) | Partition system for open plan office spaces | |
GB2050758B (en) | Acoustic diaphragm for speakers and method of producing the same | |
AU449190B2 (en) | Nonwoven fibrous sheet made by locational cutting and method of producing thesame | |
GB1510691A (en) | Electronic singing suppressor device | |
GB765183A (en) | Improvements in or relating to loudspeakers | |
US2203715A (en) | Loud-speaker arrangement | |
GB1420201A (en) | Method and apparatus for producing sound | |
JPS6468099A (en) | Speaker system | |
JPS55121793A (en) | Speaker system | |
JPS5431702A (en) | Binaural stereo reproduction circuit | |
GB1525974A (en) | Electric signal generating means | |
ES422269A1 (en) | Electronic tone generator | |
JPS53130013A (en) | Diaphragm for speakers and production of the same | |
GB1259512A (en) | ||
JPS53116102A (en) | Acoustic reproducer | |
JPS62171300A (en) | Noise compensation device for acoustic equipment | |
SU524334A1 (en) | Device for pseudo quadraphon playback | |
FR2334259A1 (en) | Open labyrinth acoustic cabinet - has sectional sound pipe with fibre glass filter producing linear low frequency response | |
JPS56168496A (en) | Speaker | |
GB1149934A (en) | Improvements relating to sound generators | |
JPS54160226A (en) | Multiway speaker system | |
GB1348240A (en) | Hearing-test equipment | |
GB970986A (en) | ||
GB611179A (en) | Improvements in and relating to acoustic instruments, such as loud speakers and directional microphones | |
GB1454894A (en) | Loudspeakers and circuit arrangements therefor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19921207 |