Patent · US Active

Active noise cancellation system for headphone

US10609468B2 · kind B2 · utility

1Cited by
1References
21Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 14, 2017
Grant dateMar 31, 2020
Priority date
Expiry dateSep 14, 2037

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04R2410/05
  • WIPO fieldOther consumer goods
  • WIPO sectorOther fields

Abstract

An active noise cancellation system comprising an active noise cancellation circuit connected to a microphone arranged to sense environmental noise, the active noise cancellation circuit comprising: —an analog-to-digital converter (ADC) arranged to convert the sensed environmental noise to a digital environmental noise signal, —a prediction filter configured for predicting a plurality D of inverted digital environmental noise samples and generating a digital inverted environmental noise signal, —a digital-to-analog converter (DAC) to convert the digital inverted environmental noise signal to an analog inverted environmental noise signal for cancelling the environmental noise.

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