Abstract: Example methods, apparatus and articles of manufacture (i.e., physical storage media) to perform media source detection based on frequency band selection and processing are disclosed. Example meters disclosed herein are to compare a first audio signal from a monitored media device with a second audio signal from a first one of a plurality of media sources in communication with the monitored media device to determine a sequence of match results, the first audio signal associated with media presented by the media device. Disclosed example meters are also to compute a standard deviation of time delays associated with respective ones of the match results. Disclosed example meters are further to determine whether the first one of the media sources is a source of the media presented by the monitored media device based on the standard deviation.

Abstract: Example methods disclosed herein to resolve media source detection ambiguities include detecting an ambiguity condition associated with media source detection when monitoring media presented by a media output device in communication with at least two media source devices, and in response to detecting the ambiguity condition, determining a source of the media output from the media output device using motion data reported by accelerometers affixed to remote control devices associated with the at least two media source devices. Example methods disclosed herein to resolve simulcast crediting ambiguities include detecting an ambiguity condition associated with simulcast broadcasting when monitoring media presented by a media output device, and in response to detecting the ambiguity condition, adjusting a time associated with a channel change using motion data reported by an accelerometer affixed to a remote control device associated with the media output device.

Abstract: Example levitating meter apparatus are disclosed. An example metering system includes a meter having a display to present indicia associated with a panelist, the meter having a microphone to receive audio output from the media device and circuitry to perform media monitoring. The example metering system includes a base having a cavity to receive at least a portion of the meter, the meter to magnetically levitate relative to the base to decouple the meter from the base.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for multimodal audience detection and identification. An example apparatus disclosed herein includes a signal strength value selector to select a portion of a set of signal strength values associated with advertising packets from a device associated with a user, the advertising packets captured by a multi-axis receiver on a plurality of different signal polarizations, a signal strength calculator to calculate a first representative signal strength value based on the selected portion of signal strength values, and a presence determiner to determine a presence of the user based on whether the first representative signal strength value satisfies a threshold.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to monitor WI-FI media streaming using alternate access points. An example apparatus disclosed herein monitor wireless traffic includes an example traffic monitor to identify a connection of a WI-FI client to a primary access point and capture a management frame transmitted from the primary access point to the WI-FI client. The example apparatus further includes an example frame generator to insert a change channel announcement into the captured management frame and a router to cause a wireless interface to transmit the beacon frame to the WI-FI client.

Abstract: Example methods disclosed herein to resolve media source detection ambiguities include detecting an ambiguity condition associated with media source detection when monitoring media presented by a media output device in communication with at least two media source devices, and in response to detecting the ambiguity condition, determining a source of the media output from the media output device using motion data reported by accelerometers affixed to remote control devices associated with the at least two media source devices. Example methods disclosed herein to resolve simulcast crediting ambiguities include detecting an ambiguity condition associated with simulcast broadcasting when monitoring media presented by a media output device, and in response to detecting the ambiguity condition, adjusting a time associated with a channel change using motion data reported by an accelerometer affixed to a remote control device associated with the media output device.

Abstract: Example methods disclosed herein to resolve media source detection ambiguities include detecting an ambiguity condition associated with media source detection when monitoring media presented by a media output device in communication with at least two media source devices, and in response to detecting the ambiguity condition, determining a source of the media output from the media output device using motion data reported by accelerometers affixed to remote control devices associated with the at least two media source devices. Example methods disclosed herein to resolve simulcast crediting ambiguities include detecting an ambiguity condition associated with simulcast broadcasting when monitoring media presented by a media output device, and in response to detecting the ambiguity condition, adjusting a time associated with a channel change using motion data reported by an accelerometer affixed to a remote control device associated with the media output device.

Abstract: Example methods, apparatus and articles of manufacture (i.e., physical storage media) to perform media source detection based on frequency band selection and processing are disclosed. Example meters disclosed herein are to compare a first audio signal from a monitored media device with a second audio signal from a first one of a plurality of media sources in communication with the monitored media device to determine a sequence of match results, the first audio signal associated with media presented by the media device. Disclosed example meters are also to compute a standard deviation of time delays associated with respective ones of the match results. Disclosed example meters are further to determine whether the first one of the media sources is a source of the media presented by the monitored media device based on the standard deviation.

Abstract: Example methods, apparatus and articles of manufacture (i.e., physical storage media) to perform media source detection based on frequency band selection and processing are disclosed. Example metering methods disclosed herein include comparing frequency band values of a first audio signal with corresponding frequency band values of a second audio signal for a first subset of a set of frequency bands to determine a first comparison result. Disclosed example metering methods also include comparing the frequency band values of the first audio signal with corresponding frequency band values of a third audio signal for a different second subset of the set of frequency bands to determine a second comparison result. Disclosed example metering methods further include determining a source of the first audio signal based on the first comparison result and the second comparison result.

Abstract: Example methods disclosed herein to resolve media source detection ambiguities include detecting an ambiguity condition associated with media source detection when monitoring media presented by a media output device in communication with at least two media source devices, and in response to detecting the ambiguity condition, determining a source of the media output from the media output device using motion data reported by accelerometers affixed to remote control devices associated with the at least two media source devices. Example methods disclosed herein to resolve simulcast crediting ambiguities include detecting an ambiguity condition associated with simulcast broadcasting when monitoring media presented by a media output device, and in response to detecting the ambiguity condition, adjusting a time associated with a channel change using motion data reported by an accelerometer affixed to a remote control device associated with the media output device.

Abstract: Example methods, apparatus and articles of manufacture (i.e., physical storage media) to perform media source detection based on frequency band selection and processing are disclosed. Example metering methods disclosed herein include comparing frequency band values of a first audio signal with corresponding frequency band values of a second audio signal for a first subset of a set of frequency bands to determine a first comparison result. Disclosed example metering methods also include comparing the frequency band values of the first audio signal with corresponding frequency band values of a third audio signal for a different second subset of the set of frequency bands to determine a second comparison result. Disclosed example metering methods further include determining a source of the first audio signal based on the first comparison result and the second comparison result.

Abstract: Example disclosed media source detection methods include determining first trending coefficients for a first audio signal obtained from a first media source in communication with a media device, wherein the first trending coefficients correspond to a set of frequency bands. Example disclosed media source detection methods also include determining second trending coefficients for a second audio signal obtained from monitoring media presented by the media device, wherein the second trending coefficients correspond to the set of frequency bands.

Abstract: Example disclosed media source detection methods include determining first trending coefficients for a first audio signal obtained from a first media source in communication with a media device, wherein the first trending coefficients correspond to a set of frequency bands. Example disclosed media source detection methods also include determining second trending coefficients for a second audio signal obtained from monitoring media presented by the media device, wherein the second trending coefficients correspond to the set of frequency bands.