Patent · US Active

Creating spectral wells for inserting watermarks in audio signals

US9454343B1 · kind B1 · utility

1Cited by
30References
17Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 20, 2015
Grant dateSep 27, 2016
Priority date
Expiry dateJul 20, 2035

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N21/8358
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

A method for a machine or group of machines to watermark an audio signal may include receiving the audio signal, receiving a watermark signal, creating a spectral well on the audio signal by removing a portion of the audio signal corresponding to a frequency range, and inserting the watermark signal in the spectral well.

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