Methods and apparatus to perform audio watermarking and watermark detection and extraction
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 30, 2021
Grant Date -
N/A
app pub date -
Mar 2, 2020
filing date -
Nov 12, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Methods and apparatus to perform audio watermarking and watermark detection and extraction are disclosed. Example apparatus include means for transforming an audio signal into a frequency domain representation, and means for determining characteristics of frequencies of the frequency domain representation that may contain the code. In some examples, the means for determining is to normalize the characteristics of the frequencies of the frequency domain representation in respective ones of the code bands that may contain the code to determine normalized characteristics of the frequencies representative of the code, a respective one of the code bands that may contain the code to be normalized against a first characteristic of a first frequency in that code band; sum the normalized characteristics of the frequencies representative of the code; determine the sum is representative of the code when the sum satisfies a threshold; and validate the code based on an encoding scheme.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully