Small changes in a broadcast version of a base media item can be identified by performing a multi-level comparison of digital fingerprints. A fingerprint of a base media item is compared to a fingerprint of a media broadcast to determine whether a media item embedded in a broadcast is likely, to a first level of certainty, to be the base media item. A second, more stringent, match between the fingerprint of the base media item and loosely matched items can be used to identify potentially-altered versions of the base media item. Potentially-altered versions can be compared against each other, and resulting matches are flagged as altered base media items, which can be fingerprinted and tested against broadcast fingerprints in the same manner as the base media item.

Small changes in a broadcast version of a base media item can be identified by performing a multi-level comparison of digital fingerprints. A fingerprint of a base media item is compared to a fingerprint of a media broadcast to determine whether a media item embedded in a broadcast is likely, to a first level of certainty, to be the base media item. A second, more stringent, match between the fingerprint of the base media item and loosely matched items can be used to identify potentially-altered versions of the base media item. Potentially-altered versions can be compared against each other, and resulting matches are flagged as altered base media items, which can be fingerprinted and tested against broadcast fingerprints in the same manner as the base media item.

An example apparatus includes a meter to generate first information indicative of a media presentation mode of a media presentation application executed by a wireless communication device during a presentation of the media content received and presented via the wireless communication device, the media content comprising scheduled programming that is broadcasted or multicasted simultaneously to a plurality of other wireless communication devices during a pre-scheduled time; and generate second information indicative of the media content presented via the wireless communication device. A memory is to store the first information in association with the second information in the wireless communication device; and store third information in association with the first and second information. The third information is indicative of at least one of a location of a cell tower used to transmit the media content, an identifier of the cell tower, or an identifier of a wireless network access point.

An apparatus including a memory for associating at least one user defined channel identifier with at least one selection item of the apparatus and a control unit coupled to the memory, the control unit being configured to cause one of the at least one user defined channel identifier to play when a corresponding one of the at least one selection item is activated by a user.

An apparatus including a memory for associating at least one user defined channel identifier with at least one selection item of the apparatus and a control unit coupled to the memory, the control unit being configured to cause one of the at least one user defined channel identifier to play when a corresponding one of the at least one selection item is activated by a user.

Examples disclosed herein to estimate volume of switching (VoS) among television programs include determining, based on panelist program viewing data, a first VoS value representing a portion of a decreased amount of tuning by matched panelists to a first program from first to second measurement periods to attribute to an increased amount of tuning by the matched panelists to a second program from the first to second measurement periods; estimating, based on the program viewing data and first VoS value, a second VoS value representing a portion of a decreased amount of tuning by unmatched panelists to the first program from the first to second measurement periods to attribute to an increased amount of tuning by the unmatched panelists to the second program from the first to second measurement periods; and combining the first and second VoS values to determine a third VoS value for a combination of the matched and unmatched panelists.

Examples disclosed herein to estimate volume of switching (VoS) among television programs include determining, based on panelist program viewing data, a first VoS value representing a portion of a decreased amount of tuning by matched panelists to a first program from first to second measurement periods to attribute to an increased amount of tuning by the matched panelists to a second program from the first to second measurement periods; estimating, based on the program viewing data and first VoS value, a second VoS value representing a portion of a decreased amount of tuning by unmatched panelists to the first program from the first to second measurement periods to attribute to an increased amount of tuning by the unmatched panelists to the second program from the first to second measurement periods; and combining the first and second VoS values to determine a third VoS value for a combination of the matched and unmatched panelists.

An apparatus to generate media metering information includes a display to present selectable options for a user to select one of a plurality of levels of anonymity to be used in association with generating the media metering information indicative of media content presentations; a processor to access an anonymity selection of one of the levels of anonymity, the levels of anonymity including no anonymity, partial anonymity, and total anonymity; and a metering information generator to generate the media metering information in association with the anonymity selection.

A multicast content delivery system can use both multicast and unicast streams to efficiently use available bandwidth to deliver content. Available multicast content can be identified to gateways serving consumption devices, and the gateways can receive requests for unicast content deliver, but honor the requests with multicast group sessions.

A system may allow users to automatically record radio programs for later consumption. When a user is listening to a radio program in the car, and arrives at the destination, the user's mobile device may capture an audio sample of the radio station, along with a GPS location of the user, and may transmit this information to a radio station application server. The server may use the location to identify a list of candidate radio stations, and may compare the audio sample with reference recordings of the candidate radio stations, to identify the radio station and program. The program may then be recorded for the user and subsequently played back at the user's convenience and on a device selected by the user, such as a mobile device, television, computer, DVR, or the like.