Invention Grant
US09564139B2 Audio data hiding based on perceptual masking and detection based on code multiplexing
有权
基于代码复用的感知掩蔽和检测的音频数据隐藏
- Patent Title: Audio data hiding based on perceptual masking and detection based on code multiplexing
- Patent Title (中): 基于代码复用的感知掩蔽和检测的音频数据隐藏
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Application No.: US14985047Application Date: 2015-12-30
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Publication No.: US09564139B2Publication Date: 2017-02-07
- Inventor: Regunathan Radhakrishnan , Michael Smithers , David S. McGrath
- Applicant: DOLBY LABORATORIES LICENSING CORPORATION
- Applicant Address: US CA San Francisco
- Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee Address: US CA San Francisco
- Main IPC: G06F17/00
- IPC: G06F17/00 ; G10L19/018
Abstract:
A spread spectrum data hiding for audio signals is described. A set of pseudo-random noise sequences is added to an audio signal according to a data to be embedded. A masking curve is used to shape the added noise. A transient detection step can be used to control whether a shaped noise sequence is to be added or not. Embedded information is detected by first performing a whitening step and then performing a phase-only correlation with a same set of pseudo-random noise sequences. A detection method that is based on correlation of multiplexed noise sequences with a noise sequence embedded in the audio is also described.
Public/Granted literature
- US20160111102A1 AUDIO DATA HIDING BASED ON PERCEPTUAL MASKING AND DETECTION BASED ON CODE MULTIPLEXING Public/Granted day:2016-04-21
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