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Publication date
Application filedfiledCritical
Priority to JP50124604ApriorityCriticalpatent/JPS5248310A/ja
Publication of JPS5248310ApublicationCriticalpatent/JPS5248310A/ja
Publication of JPS547573B2publicationCriticalpatent/JPS547573B2/ja
H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
H04R1/00—Details of transducers, loudspeakers or microphones
H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
H04R2201/34—Directing or guiding sound by means of a phase plug
Landscapes
Health & Medical Sciences
(AREA)
Otolaryngology
(AREA)
Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Acoustics & Sound
(AREA)
Signal Processing
(AREA)
Obtaining Desirable Characteristics In Audible-Bandwidth Transducers
(AREA)
JP50124604A1975-10-151975-10-15Equalizer for pneumatic braking forces in front and at the back of spe aker with oscillatory diaphragm
GrantedJPS5248310A
(en)