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Audio Signal Processing

Electric-acoustic-converter

Method for shifting the frequency of signals

It is the object of the present invention to avoid such disadvantages and to propose a circuit and ...

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FIG. 1 shows in simplified block diagram form a transmitter for a multilevel radio transmission ...

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FIG. 1 provides a brief, general description of a suitable computing environment in which the ...

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It is one object of the present invention to provide an improved data processing system. It is ...

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The present invention provides an interface for accessing, controlling and monitoring a programable ...

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It is accordingly a primary object of the present invention to provide a video recording apparatus ...

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FIG. 1 presents a high definition television (HDTV) format disclosed in the aforementioned related ...

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In order to overcome the above problems of the prior art, it is an object of the present invention ...

Optical fiber seal verifying system

OF THE INVENTION An embodiment of the present invention will be described below with reference to ...

Electric acoustic converter

Details

Inventors: Takeuchi, Akihiko; Suzuki, Shigeo;
Assignee: Yamaha Corporation (JP)
Primary Examiner: Isen; Forester W.
Assistant Examiner:
Attorney, Agent or Firm: Lerner, David, Littenberg, Krumholz & Mentlik

In the construction of an electric acoustic converter such as a speaker for musical instruments, a tone generating unit arranged near one open end of a resonant tube is accompanied with a partition which has a central through hole and extends across the longitudinal hole of the resonant tube. For complicated modes of resonance and rich acoustic vibration, two or more resonant tubes of different types may be used in combination with one or more tone generating units. Presence of such a partition clearly defines the length of the resonant air columns to be produced in the resonant tube and such clear-cut resonant air columns bring about high resonance sharpness.

DETAILED DESCRIPTION It is the object of the present invention to provide an electric acoustic converter generative of tones very close in quality factor (Q) to those generated by natural musical instruments.
In accordance with the basic aspect of the present invention, at least one tone generating unit arranged in a housing has a vibratory membrane, at least one resonant tube is arranged in communication with the interior of the housing, a partition provided with a through hole is arranged in the resonant tube facing the tone generating unit and the partition extends substantially normal to the axis of the resonant tube.

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