Telephonic communications – Terminal – Housing or housing component
Reexamination Certificate
1999-07-06
2001-08-28
Chiang, Jack (Department: 2642)
Telephonic communications
Terminal
Housing or housing component
Reexamination Certificate
active
06282287
ABSTRACT:
BACKGROUND OF THE PRESENT INVENTION
1. Field of Invention
The present invention relates to an earpiece, and more particularly to a hand set communication earpiece with a loudspeaker inside, wherein sound generated by the loudspeaker of the earpiece does not contain impulse and high frequency noise and the earpiece can also purify and clarify sound.
2. Description of Related Arts
A communication earpiece is used as an energy transformer that the electrical energy of voice will transform into the mechanical energy to a loudspeaker and further transform into sound energy adapted for people hearing. However, the electrical energy of voice is not pure and unique for transformation. It also contains many electrical feedback or noise. This noise after two energy transformations cannot be reduced automatically and will remain in the sound energy at last. It is why the noise of ‘beep’ sounds often found at high frequency range and the noise of ‘woo’ sounds often found at low frequency range. An impulse noise is produced during transformation as well. So, the quality of sound will get poor and sometimes user is unable to hear the sound clearly from the earpiece.
Moreover, the above description is one of the causes of the noise emitted from the earpiece. The noise such as noise from the heat conduction by electric circuit and noise from the semi-conductor still cannot be overcome. So, it is impossible to completely reduce the noise in the sound from an ordinary earpiece.
SUMMARY OF THE PRESENT INVENTION
A main object of the present invention is to provide a communication earpiece without impulse and high frequency noise, wherein two different sound waves are generated by the loudspeaker in the earpiece, which overlap with each other to intensify the reproductive resonance at the middle range of frequency (200 Hz~4 kHz) of sound wave. Moreover, the present invention can filter and minimize the noise or feedback at higher and lower frequency range. A high-clarity sound without impulse noise will be produced by the present invention that an ordinary earpiece cannot produce.
Another object of the present invention is to provide a communication earpiece wherein the earpiece must be placed near to the human external ear while using, the lower impulse noise output end according to two output ends of a loudspeaker inside the earpiece is faced toward the human external ear. So, the low impulse noise is received and the direct impact of high impulse noise can be avoided to the human ear. Human ear will have the best protection. Even though the earpiece will generate high impulse noise, this impulse noise to the human ear will diminish as much as possible. People will enjoy a healthy and safety sound generated by the present invention.
REFERENCES:
patent: 5729605 (1998-03-01), Bobisuthi et al.
patent: 5953414 (1999-09-01), Abraham et al.
Chan Raymond Y.
Chiang Jack
David and Raymond Patent Group
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