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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Application grantedgrantedCritical
Publication of FR1127797ApublicationCriticalpatent/FR1127797A/fr
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
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Physics & Mathematics
(AREA)
Engineering & Computer Science
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Acoustics & Sound
(AREA)
Multimedia
(AREA)
FR1127797D1954-07-221955-07-20Dispositif de reproduction du son dans des locaux fermés
ExpiredFR1127797A
(fr)