The Nielsen Comapny (us), LLC

Khaldun Karazoun

Alexander Pavlovich Topchy

Jeremey M Davis

Christen Voss Nielsen

Wendell D Lynch

Methods and apparatus to identify media application sessions are disclosed. An example apparatus includes an audio interface to monitor an audio output of a media presentation device during a viewing session, a tone analyzer to identify one or more dual-tone multi-frequency (DTMF) tones presented by the audio output of the media presentation device, a session identification determiner to determine a session identification value associated with the viewing session based on the one or more identified DTMF tones, and a session report generator to associate a panelist identifier with the viewing session, and generate a session report based on the session identification value associated with the DTMF tones and the panelist identifier associated with the viewing session.

Methods and apparatus to identify media application sessions

Methods, apparatus, systems and articles of manufacture for identifying streaming sessions are disclosed. An example apparatus includes an audience measurer to determine an identifier for a commercial presented at a media presentation device, and to determine a time at which the commercial was presented. The example apparatus also includes a log analyzer to compare the identifier and the time to a streaming session log from a streaming service provider (SSP) to identify a streaming session in which the commercial associated with the identifier was presented at the time. The example apparatus also includes a panelist matcher to associate, based on the comparison, a panelist identifier with a streaming session identifier corresponding to the streaming session.

Methods and apparatus to identify streaming sessions

Client identifier watermarks in media signals are disclosed. An example apparatus to watermark a multilayered file includes a watermark storage to store media identifiers. The example apparatus also includes an encoder to encode a first bit sequence in the media file on a first encoding layer of a multilayered watermark, the first bit sequence to include a client identifier of a client associated with the media file, and encode a second bit sequence in the media file on a second encoding layer of the multilayered watermark, the second bit sequence to include a media identifier to identify media corresponding to the media file.

Client identifier watermarks in media signals

An example apparatus includes at least one processor circuitry to execute or instantiate instructions to identify a media file is scheduled to be accessed by a media device within a first time period after a publishing of the media file was published by a media provider; select a first symbol to be inserted at a first symbol position and a second symbol to be inserted at a second symbol position to identify an access of the media file is to be accessed by the media device within the first time period, the first symbol position in a first bit sequence, the second symbol position in a second bit sequence; encode the first bit sequence in the media file on a first encoding layer of a multilayered watermark, and encode the second bit sequence in the media file on a second encoding layer of the multilayered watermark.

Systems, apparatus, and methods to improve watermark detection in acoustic environments

Methods, apparatus, systems, and articles of manufacture are disclosed to identify media for ahead of time watermark encoding. An example apparatus includes a media interface to determine a characteristic of media, the characteristic corresponding to a broadcast time of the media; and a controller to: determine an identifier corresponding to the media; transmit a query including the characteristic and the identifier prior to the media being broadcast, the query to request an indication whether the identifier is unique; and responsive to the indication that the identifier is unique, cause a watermark to be encoded in the media using the identifier prior to the media being broadcast.

Methods and apparatus to identify media for ahead of time watermark encoding

Methods, apparatus, systems and articles of manufacture are disclosed for audio watermarking and, more particularly, methods and apparatus to inspect characteristics of multichannel audio. An example apparatus disclosed herein includes an audio demultiplexer to obtain a first audio subchannel and a second audio subchannel of a multichannel audio signal and a watermark detector to detect watermarks in the first audio subchannel and watermarks in the second audio subchannel. The example apparatus further includes a channel characteristic inspector to compare a number of watermarks detected in the first audio subchannel and a number of watermarks detected in the second audio subchannel to determine whether the first and second audio subchannels were watermarked in accordance with a watermark encoder configuration and a result alerter to distribute an alert in response to a determination that the first and second audio subchannels were not watermarked in accordance with the watermark encoder configuration.

Methods and apparatus to inspect characteristics of multichannel audio

Methods, apparatus, systems, and articles of manufacture to improve watermark detection in acoustic environments are disclosed. An example apparatus includes at least one memory, instructions in the apparatus, and processor circuitry to execute and/or instantiate the instructions to encode a first symbol in a media file at a first symbol position on a first encoding layer of a multilayered watermark, and encode a second symbol in the media file at a second symbol position on a second encoding layer of the multilayered watermark, the first encoding layer and the second encoding layer including a plurality of symbol positions, one or more of the plurality of the symbol positions on at least one of the first encoding layer or the second encoding layer to be empty.

Methods, apparatus, systems, and articles of manufacture are disclosed to identify media for ahead of time watermark encoding. An example apparatus includes a processor to determine a first identifier associated with first media based on a query including the first identifier, a first scheduled broadcast time of the first media, and a first duration of the first media; and a comparator to: in response to determining a database includes a second identifier associated with second media, determine whether a second duration of the second media at a second scheduled broadcast time overlaps the first duration of the first media at the first scheduled broadcast time; and in response to determining that the second duration of the second media at the second scheduled broadcast time does not overlap the first duration of the first media at the first scheduled broadcast time, store the first identifier in the database.

Methods, apparatus, systems and articles of manufacture are disclosed for audio watermarking and, more particularly, methods and apparatus to inspect characteristics of multichannel audio. Example methods disclosed herein are further to obtain an audio subchannel of the multichannel audio signal, detect an embedded watermark in the audio subchannel of the multichannel audio signal, determine a characteristic of the audio subchannel of the multichannel audio signal based on the embedded watermark, and in response to determining an issue with the characteristic of the audio subchannel of the multichannel audio signal, distribute an alert.

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Tampa, FL, United States of America

Khaldun Karazoun