L
Lynch Wendell D
Researcher at Nielsen Holdings N.V.
Publications - 37
Citations - 2204
Lynch Wendell D is an academic researcher from Nielsen Holdings N.V.. The author has contributed to research in topics: Audio signal & Code (cryptography). The author has an hindex of 20, co-authored 37 publications receiving 2204 citations.
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Patent
Apparatus and methods for including codes in audio signals and decoding
James M. Jensen,Lynch Wendell D,Perelshteyn Michael M,Robert B Graybill,Hassan Sayed,Sabin Wayne +5 more
TL;DR: A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component as discussed by the authors.
Patent
Method and apparatus for encoding/decoding broadcast or recorded segments and monitoring audience exposure thereto
TL;DR: In this article, the authors describe methods and apparatus for encoding and decoding information in broadcast or recorded segment signals using spread spectrum encoding (SSA) for audio broadcast and recorded segment.
Patent
Apparatus and methods for including codes in audio signals
James M. Jensen,Lynch Wendell D,Perelshteyn Michael M,Robert B Graybill,Hassan Sayed,Sabin Wayne +5 more
TL;DR: A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component as mentioned in this paper.
Patent
Decoding of information in audio signals
TL;DR: In this article, a message symbol is represented by first and second code symbols displaced in time, and values representing the code signals are accumulated (116) and the accumulated values are examined to detect the message symbol.
Patent
Systems and methods for gathering audience measurement data
TL;DR: In this paper, a system and methods for gathering audience measurement data relating to exposure of an audience member to audio data is described. But this method requires the audience member's participation in an audiovisual event.