CH545523ACH545523DACH545523ACH 545523 ACH545523 ACH 545523ACH 545523D ACH545523D ACH 545523DACH 545523 ACH545523 ACH 545523A
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CH
Switzerland
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Publication of CH545523ApublicationCriticalpatent/CH545523A/xx
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
G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors
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Physics & Mathematics
(AREA)
Engineering & Computer Science
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Acoustics & Sound
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Multimedia
(AREA)
Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products
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Diaphragms For Electromechanical Transducers
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