Title:
INTERPOLATING TIME-DISCRETE FILTER UNIT
Document Type and Number:
Japanese Patent JPS60217714
Kind Code:
A
Abstract:
Interpolating time-discrete filter arrangement for increasing the sampling frequency of a time-discrete signal from f1 to fu, fu not being a rational multiple of fi. For the generation of the required filter coefficients this filter arrangement comprises clock pulse generators which produce input clock pulses ki(q) at a rate fi and output clock pulses ku(n) at a rate fu. It also comprises a coefficients generator (4) in which a deviation component d(q) is calculated which indicates the relationship between the time interval Td(q) located between an input clock pulse ki (q) and the immediately preceding or the immediately subsequent output clock pulse ku(n) and the time interval Tu=1/fu between two consecutive output clock pulses ku(n). In response to this deviation component the filter coefficients generator produces W filter coefficients, the wth filter coefficient (w = 0, 1, 2, 3, ... W-1) being equal to a (d(q),w) and being defined by the expressionHerein the function h(v) represents the impulse response of a FIR filter and v a continuous variable in the interval -∞ < v <∞.
More Like This:
| JPS6318813 | CYCLIC ADAPTIVE FILTER |
| JPH06162413 | WAVEFORM EQUALIZER CIRCUIT |
| JPH07336791 | CAR AUDIO SYSTEM |
Inventors:
EDOARUDO FUERUDEINANDO SUTEIIK
Application Number:
JP48685A
Publication Date:
October 31, 1985
Filing Date:
January 08, 1985
Export Citation:
Assignee:
PHILIPS NV
International Classes:
H03H17/00; H03H17/02; H03H17/06; (IPC1-7): H03H17/02
Attorney, Agent or Firm:
Akihide Sugimura