Electrical audio signal processing systems and devices – Electro-acoustic audio transducer
Patent
1995-04-11
1996-12-31
Tran, Sinh
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
381159, 181156, H04R 2500
Patent
active
055902081
ABSTRACT:
A duct is provided in a cabinet for radiating sound pressure emitted from a speaker unit. The duct comprises a first duct and a second duct. The first duct extends in a direction perpendicular to a radiating direction of the sound pressure radiated from a front side of the speaker unit. The second duct is connected to an end of the first duct. An inner end of of the second duct is communicated with the cabinet. The speaker unit is disposed at a connection of the first and second ducts.
REFERENCES:
patent: 5197103 (1993-03-01), Hayakawa
patent: 5414230 (1995-05-01), Nienwendijk et al.
Hanayama Katsutoki
Kogure Koushirou
Koyano Shinji
Ohyaba Takashi
Sakakibara Makoto
Pioneer Electronic Corporation
Tran Sinh
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