Acoustics – Anatomic or prosthetic relation – Ear and mouth
Patent
1991-08-05
1995-10-17
Dang, Khanh
Acoustics
Anatomic or prosthetic relation
Ear and mouth
381183, H04R 2500
Patent
active
054592909
ABSTRACT:
The present invention is directed to an acoustic transducer comprising acoustic transducing units respectively accommodated in cabinets which are attached in the vicinity of left and right ears and sound conduit tubes for conducting sounds emitted from the acoustic transducer units to the outside of the cabinets, wherein the inner diameter of the sound conduit tubes is selected to be shorter than the diameter of the acoustic transducing units, and end portions of the sound conduit tubes are placed outside the external auditory meatus of the left and right ears, thereby making external sounds audible during reproduction of sounds as well as reproducing sounds without causing a pressure. The present invention is also directed to an acoustic transducing system comprising acoustic reproducing apparatus which are supplied with audio signals and convert the audio signals to sounds for reproduction and an acoustic transducer composed of acoustic transducing units respectively accommodated in cabinets which are attached in the vicinity of left and right ears and sound conduit tubes for conducting sounds emitted from the acoustic transducer units to the outside of the cabinets, wherein the acoustic transducer transduces at least low frequency components of the audio signal supplied to the reproducing apparatus, thereby satisfactory reproducing sounds in a low frequency range without enlarging the system.
REFERENCES:
patent: 1586140 (1926-05-01), Bonnette
patent: 4523661 (1985-06-01), Scalzo et al.
Dang Khanh
Kananen Ronald P.
Sony Corporation
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