Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1982-06-21
1984-07-24
Pellinen, A. D.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
381103, H04R 1900, H04R 1902
Patent
active
044619316
ABSTRACT:
An electrostatic loudspeaker system includes a transformer whose secondary winding is connected to the conductive plates of an electrostatic loudspeaker and whose primary winding is energized by an audio input signal through a frequency response equalizing network which includes an autotransformer winding as well as resistive and capacitive elements. Specifically, the autotransformer winding is connected in parallel with the primary winding, one audio input terminal is directly connected to one end of the autotransformer winding, at least one tap of the autotransformer winding is connected through a resistive element to the other audio input terminal and the other end of the autotransformer winding is connected to the other audio input terminal through a capacitive element.
REFERENCES:
patent: 1836266 (1931-12-01), McClintock
patent: 1930518 (1933-10-01), High
patent: 2093248 (1937-09-01), Oura
patent: 2325899 (1943-08-01), Young et al.
patent: 2993090 (1961-07-01), Hupert et al.
patent: 4237340 (1980-12-01), Klipsch
"Telstar Shaped Electrostatic Speaker", by R. J. Matthys, Audio, vol. 48, May 1964, pp. 19-24 and 73.
Byrd Danita R.
Pellinen A. D.
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