Patent · US Active

Method and device for filtering during a change in an ARMA filter

US9641157B2 · kind B2 · utility

0Cited by
2References
15Claims
0Family size

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Key dates

Filing dateMar 14, 2012
Grant dateMay 2, 2017
Priority date
Expiry dateApr 5, 2034

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH03H2017/0295
  • WIPO fieldBasic communication processes
  • WIPO sectorElectrical engineering

Abstract

A method and device are provided for filtering digital audio signals using at least one ARMA filter, particularly during a filter change. The method includes the following steps: a step of receiving a first request to change filtering to or from filtering by a first ARMA filter; and, in response to the first request, a step of gradually switching, at each of a plurality of cascaded first filtering blocks, between digital-signal filtering by a first basic filtering cell and digital-signal filtering by another associated basic filtering cell, the first basic filtering cells of the plurality of first filtering blocks factorizing the first filter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.