Compensating for Time Scale Differences between Audio and Other Signals in Fingerprinting and Matching Applications

    公开(公告)号:US20240354338A1

    公开(公告)日:2024-10-24

    申请号:US18306182

    申请日:2023-04-24

    IPC分类号: G06F16/683 G06F16/63

    CPC分类号: G06F16/683 G06F16/63

    摘要: A method includes receiving, by a computing system, an audio signal, where the audio signal defines a segment of media content over time. The method also includes establishing by the computing system, based on the received audio signal, a normalized query frequency-domain representation of the received audio signal. The method further includes matching, by the computing system, the normalized query frequency-domain representation of the received audio signal with a correspondingly normalized reference frequency-domain representation of a reference audio signal having an associated identity. The method additionally includes based on the matching, determining by the computing system that an identity of the received audio signal is the associated identity of the reference audio signal.

    Media identification using watermarks and signatures

    公开(公告)号:US12126431B2

    公开(公告)日:2024-10-22

    申请号:US17688569

    申请日:2022-03-07

    IPC分类号: H04H60/64 H04H60/37 H04H60/48

    CPC分类号: H04H60/64 H04H60/37 H04H60/48

    摘要: Apparatus, systems, articles of manufacture, and methods to identify media using watermarks and signatures are disclosed. An example apparatus includes at least one memory, instructions, and processor circuitry to execute the instructions to: determine a first time and a category indicated by a watermark detected in the media, determine a search window based on the first time indicated by the watermark, the search window to at least one of (i) extend a first duration of time before the first time indicated by the watermark or (ii) extend a second duration of time after the first time indicated by the watermark, and compare (i) a query signature associated with a second time within the search window with (ii) a subset of reference signatures associated with the category to identify the media, the query signature generated from the media, the subset of reference signatures generated from reference media associated with the category.

    METHODS AND APPARATUS TO PERFORM SIGNATURE MATCHING USING NOISE CANCELLATION MODELS TO ACHIEVE CONSENSUS

    公开(公告)号:US20230178097A1

    公开(公告)日:2023-06-08

    申请号:US17986586

    申请日:2022-11-14

    IPC分类号: G10L25/57

    CPC分类号: G10L25/57

    摘要: Examples are disclosed to perform signature matching using noise cancellation models to achieve consensus. Example apparatus disclosed herein include a signature matcher to compare a first stream of monitored media signatures to streams of reference signatures representative of corresponding reference media to determine a first signature match, and compare a second stream of monitored media signatures to the streams of reference signatures to determine a second signature match; a match selector to use at least one the first signature match or the second signature match to identify a first one of the reference media corresponding to the monitored media data; and a creditor interface to output identification data for the first one of the reference media identified with the at least one the first signature match or the second signature match, the identification data to be used to credit a media exposure corresponding to the monitored media.

    METHODS AND APPARATUS TO USE STATION IDENTIFICATION TO ENABLE CONFIRMATION OF EXPOSURE TO LIVE MEDIA

    公开(公告)号:US20230041548A1

    公开(公告)日:2023-02-09

    申请号:US17751375

    申请日:2022-05-23

    摘要: Methods, apparatus, systems and articles of manufacture are disclosed to use station identification to enable confirmation of exposure to live media. Example apparatus disclosed herein include a watermark data segmenter to determine a media identifier conveyed by a watermark, a detection time determiner to determine a time at which a media meter detected the watermark from a media presentation by a media device, a reference identifier to query a library of reference signatures for a reference signature associated with the media identifier of the watermark and associated with a reference timestamp corresponding to the time at which the media meter detected the watermark, and a viewing type determiner to determine whether the media presentation is live or time-shifted based on whether a result of the query indicates the reference signature does not exist in the library of reference signatures.

    Methods and apparatus to perform signature matching using noise cancellation models to achieve consensus

    公开(公告)号:US11501793B2

    公开(公告)日:2022-11-15

    申请号:US16994095

    申请日:2020-08-14

    IPC分类号: G10L25/51 G10L25/57

    摘要: Examples are disclosed to perform signature matching using noise cancellation models to achieve consensus. Example apparatus disclosed herein include a signature matcher to compare a first stream of monitored media signatures to streams of reference signatures representative of corresponding reference media to determine a first signature match, and compare a second stream of monitored media signatures to the streams of reference signatures to determine a second signature match; a match selector to use at least one the first signature match or the second signature match to identify a first one of the reference media corresponding to the monitored media data; and a creditor interface to output identification data for the first one of the reference media identified with the at least one the first signature match or the second signature match, the identification data to be used to credit a media exposure corresponding to the monitored media.

    MEDIA IDENTIFICATION USING WATERMARKS AND SIGNATURES

    公开(公告)号:US20220200717A1

    公开(公告)日:2022-06-23

    申请号:US17688569

    申请日:2022-03-07

    IPC分类号: H04H60/64 H04H60/48 H04H60/37

    摘要: Apparatus, systems, articles of manufacture, and methods to identify media using watermarks and signatures are disclosed. An example apparatus includes at least one memory, instructions, and processor circuitry to execute the instructions to: determine a first time and a category indicated by a watermark detected in the media, determine a search window based on the first time indicated by the watermark, the search window to at least one of (i) extend a first duration of time before the first time indicated by the watermark or (ii) extend a second duration of time after the first time indicated by the watermark, and compare (i) a query signature associated with a second time within the search window with (ii) a subset of reference signatures associated with the category to identify the media, the query signature generated from the media, the subset of reference signatures generated from reference media associated with the category.

    Methods and apparatus to determine a state of a media presentation device

    公开(公告)号:US11363335B2

    公开(公告)日:2022-06-14

    申请号:US16983639

    申请日:2020-08-03

    摘要: Methods and apparatus to determine a state of a media presentation device are disclosed. Example disclosed methods include generating a first set of weighted coefficients based on first audio received by first and second microphones at a first time. Example disclosed methods include generating a second set of weighted coefficients based on second audio received by the first and second microphones at a second time after the first time. Example disclosed methods include comparing the first set of coefficients and the second set of coefficients to generate a similarity value. Example disclosed methods include, when the similarity value satisfies a threshold, determining that the media presentation device is in a first state. Example disclosed methods include, when the similarity value does not satisfy the threshold, determining that the media presentation device is in a second state.