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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furuno Electric Co Ltd
Original Assignee
Furuno Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Furuno Electric Co LtdfiledCriticalFuruno Electric Co Ltd
Priority to JP16871883ApriorityCriticalpatent/JPS6058569A/ja
Publication of JPS6058569ApublicationCriticalpatent/JPS6058569A/ja
Publication of JPH0251155B2publicationCriticalpatent/JPH0251155B2/ja
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
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Engineering & Computer Science
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Acoustics & Sound
(AREA)
Multimedia
(AREA)
Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves
(AREA)