Title:
DIGITAL SIGNAL PROCESSING METHOD
Document Type and Number:
Japanese Patent JPS63204303
Kind Code:
A
Abstract:
PURPOSE:To obtain a transfer function with a wide range of frequency, by dividing a targeted transfer function into plural transfer functions, and adding the transfer functions after applying a digital arithmetic operation on each transfer function independently. CONSTITUTION:When signals gamma are inputted, samples 1-3 sample the signals gammawith sampling cycles T1-T3, and they are fetched in filters 4-6 as the sample value signals of signals gamma1*-gamma3*. At the filters 4-6, the arithmetic processings of the transfer functions G1-G3 are applied on inputted signals gamma1*-gamma3*, and consequently, they are outputted as signals, y1-y3. The signals y1-y3 outputted from the filters 4-6, after being converted to sample value signals y1*-y3* by the samplers 1-3, are synthesized by an adder 7, and a result is outputted as a signal y*. In such a way, it is possible to obtain the transfer function with the wide range of frequency without changing the arithmetic word length of a digital signal processing means.
Inventors:
TATE YOSHIYUKI
HIBINO YOZO
HIRAI HIROTAKE
HIBINO YOZO
HIRAI HIROTAKE
Application Number:
JP3665587A
Publication Date:
August 24, 1988
Filing Date:
February 19, 1987
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05B21/02; (IPC1-7): G05B21/02
Attorney, Agent or Firm:
Tatsuyuki Unuma
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