公开(公告)号：CA2993192A1

公开(公告)日：2017-01-26

申请号：CA2993192

申请日：2016-07-20

Applicant: TLS CORP

Inventor： BLESSER BARRY A

IPC: G06F17/00

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.

公开(公告)号：CA2932262A1

公开(公告)日：2015-06-11

申请号：CA2932262

申请日：2014-12-04

Applicant: TLS CORP

Inventor： BLESSER BARRY

IPC: G10L19/018

Abstract: A device for extracting a watermark signal from an output signal of a watermarking encoder in which the output signal includes an input signal portion corresponding to an input signal to the watermarking encoder and a watermark signal portion corresponding to the watermark signal includes an input configured to receive the input signal and the output signal. The device further includes an adjustment signal generator configured to generate a gain adjustment signal and a delay adjustment signal based on the input signal and the output signal, a gain and delay adjustor configured to adjust gain and delay of the output signal or the input signal based on the gain adjustment signal and the delay adjustment signal, respectively, to generate an adjusted output signal or an adjusted input signal, respectively, and an output configured to transmit a difference between the input signal and the adjusted output signal or a difference between the adjusted input signal and the output signal as the watermark signal.