GB1262694A - Apparatus for the directional transmission and/or reception of sound waves in water - Google Patents
Apparatus for the directional transmission and/or reception of sound waves in waterInfo
- Publication number
- GB1262694A GB1262694A GB5543069A GB5543069A GB1262694A GB 1262694 A GB1262694 A GB 1262694A GB 5543069 A GB5543069 A GB 5543069A GB 5543069 A GB5543069 A GB 5543069A GB 1262694 A GB1262694 A GB 1262694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- band
- centre
- transducers
- frequency
- directional
- 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
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
- G10K11/341—Circuits therefor
- G10K11/343—Circuits therefor using frequency variation or different frequencies
-
- 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
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
- G10K11/341—Circuits therefor
- G10K11/346—Circuits therefor using phase variation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
1,262,694. Acoustic directional systems. FRIED. KRUPP G.m.b.H. 12 Nov., 1969 [13 Nov., 1968], No. 55430/69. Heading H4D. An acoustic directional transmitting and/or receiving system comprising an arrangement of transducers or groups of transducers of different extent perpendicular to the major lobe of their corresponding directional characteristic, the n-directional characteristics being in different directions, is characterized in that the n-transmitting and/or receiving channels which are connected to the arrangement for different frequencies or frequency bands are such that the different frequencies or, for the case of frequency bands, the centre frequencies, are inversely proportional to the extents; and in the case of frequency bands the ratio of bandwidth to centre frequency is constant. In a configuration of receiving transducers S 1 , S 2 ... Sn grouped into sets d 1 , d 2 ... dn, the corresponding directions P 1 , P 2 ... P n have equal beam widths if band-pass filters F 1 , F 2 ... F n are employed, the centre frequencies of which are inversely proportional to the extents d 1 , d 2 ... d n , the ratio of bandwidth to centre frequency being kept constant. Compensators N 1 , N 2 ... N n may be incorporated. For indicating direction the channels 1, 2 ... n may be scanned as described in Specification 1,220,629. For aural direction-finding the outputs of scanner A are heterodyned to a common frequency band. Each bearing P may be found utilizing the sum-and-difference method; or each set d may be subdivided into two groups, each having a band-pass filter, the two filters feeding a correlator, Fig. 2 (not shown). In a further embodiment the sets d may be fed sequentially to a band-pass filter of variable bandwidth, Fig. 3 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681808596 DE1808596A1 (en) | 1968-11-13 | 1968-11-13 | Device for directional transmission and / or reception of water-borne sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1262694A true GB1262694A (en) | 1972-02-02 |
Family
ID=5713180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5543069A Expired GB1262694A (en) | 1968-11-13 | 1969-11-12 | Apparatus for the directional transmission and/or reception of sound waves in water |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1808596A1 (en) |
| FR (1) | FR2023160A1 (en) |
| GB (1) | GB1262694A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2138941A (en) * | 1983-04-18 | 1984-10-31 | Yokogawa Medical Syst | Azimuth adaptive phased array sonar |
| WO2013068883A1 (en) * | 2011-11-10 | 2013-05-16 | Koninklijke Philips Electronics N.V. | Improving large volume three-dimensional ultrasound imaging |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS522591A (en) * | 1975-06-24 | 1977-01-10 | Toshiba Corp | Supersonic wave emitting and receiving device |
| US5257674A (en) * | 1988-11-14 | 1993-11-02 | Yamaha Hatsudoki Kabushiki Kaisha | Engine construction for vehicle |
-
1968
- 1968-11-13 DE DE19681808596 patent/DE1808596A1/en active Pending
-
1969
- 1969-11-03 FR FR6937718A patent/FR2023160A1/fr not_active Withdrawn
- 1969-11-12 GB GB5543069A patent/GB1262694A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2138941A (en) * | 1983-04-18 | 1984-10-31 | Yokogawa Medical Syst | Azimuth adaptive phased array sonar |
| WO2013068883A1 (en) * | 2011-11-10 | 2013-05-16 | Koninklijke Philips Electronics N.V. | Improving large volume three-dimensional ultrasound imaging |
| CN103917891A (en) * | 2011-11-10 | 2014-07-09 | 皇家飞利浦有限公司 | Improving large volume three-dimensional ultrasound imaging |
| CN103917891B (en) * | 2011-11-10 | 2016-08-24 | 皇家飞利浦有限公司 | Improve large volume 3-D supersonic imaging |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1808596A1 (en) | 1970-06-11 |
| FR2023160A1 (en) | 1970-08-07 |
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