Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices – Loudspeaker operation
Patent
1983-06-16
1985-04-02
Kemeny, E. S. Matt
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
Loudspeaker operation
G10L 100
Patent
active
045091889
ABSTRACT:
A signal synthesizer apparatus having a parameter dependent multiplier which includes charge-coupled devices. The multiplier has a gating input to store a charge corresponding to an input signal applied thereto; a transmission circuit for selectively transferring portions of the stored input charge, the selectivity of the transmission circuit being dependent on the prescribed parameter; and an output for receiving and combining all of the charges transferred from the transmission circuit. The transmission circuit comprises a first circuit for selectively dividing the charge corresponding to the input signal into given fragments and for transferring the divided charge, and a second circuit for determining the selectivity of the dividing of the charge according to the prescribed parameter. The rate of the dividing of charge corresponds to the multiplicative coefficient of the multiplier.
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patent: 4126852 (1978-11-01), Baertsch
patent: 4161785 (1979-07-01), Gasparek
Kang, "Linear Predictive Narrowband Voice Digitizer", Report NRL Progress, May 1974, pp. 9-72.
Albarron et al., "A Charge Transfer Multiplying Digital to Analog Converter", IEEE J. Solid State, Dec. 1976, pp. 772-779.
Strube, "Analog Discrete Time Filter", IEEE Trans. on Acoustics, etc., Feb. 1977, pp. 50-54.
Kemeny E. S. Matt
Tokyo Shibaura Denki Kabushiki Kaisha
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