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公开(公告)号：WO2022146674A1
公开(公告)日：2022-07-07
申请号：PCT/US2021/063300
申请日：2021-12-14
Applicant: GRACENOTE, INC.
Inventor： BERRIAN, Alexander , HODGES, Tadd , COOVER, Robert , WILKINSON, Matthew , RAFII, Zafar
IPC: G10L19/018 , G06F16/683
Abstract: A method implemented by a computing system comprises generating, by the computing system, a fingerprint comprising a plurality of bin samples associated with audio content. Each bin sample is specified within a frame of the fingerprint and is associated with one of a plurality of non-overlapping frequency ranges and a value indicative of a magnitude of energy associated with a corresponding frequency range. The computing system removes. from the fingerprint, a plurality of bin samples associated with a frequency sweep in the andio content.
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公开(公告)号：WO2020102632A1
公开(公告)日：2020-05-22
申请号：PCT/US2019/061632
申请日：2019-11-15
Applicant: GRACENOTE, INC.
Inventor： CREMER, Markus, K. , MERCHANT, Shashank , COOVER, Robert , HODGES, Todd, J. , MORRIS, Joshua, Ernest
IPC: H04N21/439 , H04N21/485 , H04N21/472
Abstract: In one aspect, an example method includes (i) determining, by a playback device, a first loudness level of a first portion of first media content from a first source while the playback device presents the first media content, with the first portion having a first length; (ii) switching, by the playback device, from presenting the first media content from the first source to presenting second media content from a second source; (iii) based on the switching, determining, by the playback device, second loudness levels of second portions of the first media content while the playback device presents the second media content, with the second portions having a second length that is shorter than the first length; and (iv) while the playback device presents the second media content, adjusting, by the playback device, a volume of the playback device based on one or more of the second loudness levels.
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3.发明申请
公开(公告)号：WO2020086771A1
公开(公告)日：2020-04-30
申请号：PCT/US2019/057736
申请日：2019-10-23
Applicant: GRACENOTE, INC.
Inventor： COOVER, Robert , SUMMERS, Cameron Aubrey , HODGES, Todd , RENNER, Joseph , CREMER, Markus
Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to adjust audio playback settings based on analysis of audio characteristics. Example apparatus disclosed herein include an equalization (EQ) model query generator to generate a query to a neural network, the query including a representation of a sample of an audio signal; an EQ filter settings analyzer to: access a plurality of audio playback settings determined by the neural network based on the query; and determine a filter coefficient to apply to the audio signal based on the plurality of audio playback settings; and an EQ adjustment implementor to apply the filter coefficient to the audio signal in a first duration.
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公开(公告)号：WO2021108186A1
公开(公告)日：2021-06-03
申请号：PCT/US2020/061077
申请日：2020-11-18
Applicant: GRACENOTE, INC.
Inventor： BERRIAN, Alexander , WILKINSON, Matthew James , COOVER, Robert
IPC: G10L19/018 , G10L19/025
Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to fingerprint an audio signal via exponential normalization. An example apparatus includes an audio segmenter to divide an audio signal into a plurality of audio segments including a first audio segment and a second audio segment, the first audio segment including a first time-frequency bin, the second audio segment including a second time-frequency bin, a mean calculator to determine a first exponential mean value associated with the first time frequency bin based on a first magnitude of the audio signal associated with the first time frequency bin and a second exponential mean value associated with the second time frequency bin based on a second magnitude of the audio signal associated with the second time frequency bin and the first exponential mean value. The example apparatus further includes a bin normalizer to normalize the first time-frequency bin based on the second exponential mean value and a fingerprint generator to generate a fingerprint of the audio signal based on the normalized first time-frequency bins.
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5.发明申请
公开(公告)号：WO2020102633A1
公开(公告)日：2020-05-22
申请号：PCT/US2019/061633
申请日：2019-11-15
Applicant: GRACENOTE, INC.
Inventor： CREMER, Markus, K. , MERCHANT, Shashank , COOVER, Robert , HODGES, Todd, J. , MORRIS, Joshua, Ernest
IPC: H04N21/439 , H04N21/485 , H04N21/472
Abstract: In one aspect, an example method includes (i) determining, by a playback device, a loudness level of first media content that the playback device is receiving from a first source; (ii) comparing, by the playback device, the determined loudness level of the first media content with a reference loudness level indicated by a loudness level profile for the first media content; (iii) determining, by the playback device, a target volume level for the playback device based on a difference between the determined loudness level of the first media content and the reference loudness level; and (iv) while the playback device presents second media content from a second source in place of the first media content, adjusting, by the playback device, a volume of the playback device toward the target volume level.
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Patent Agency Ranking
公开(公告)号：WO2021207648A1
公开(公告)日：2021-10-14
申请号：PCT/US2021/026651
申请日：2021-04-09
Applicant: GRACENOTE, INC.
Inventor： RENNER, Joseph , VARTAKAVI, Aneesh , COOVER, Robert
IPC: H04N21/44 , H04N21/439 , H04N21/81 , H04N21/845 , G06N3/08 , G06N3/04
Abstract: In one aspect, an example method includes (i) extracting a sequence of audio features from a portion of a sequence of media content; (ii) extracting a sequence of video features from the portion of the sequence of media content; (iii) providing the sequence of audio features and the sequence of video features as an input to a transition detector neural network that is configured to classify whether or not a given input includes a transition between different content segments; (iv) obtaining from the transition detector neural network classification data corresponding to the input; (v) determining that the classification data is indicative of a transition between different content segments; and (vi) based on determining that the classification data is indicative of a transition between different content segments, outputting transition data indicating that the portion of the sequence of media content includes a transition between different content segments.
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公开(公告)号：WO2021108664A1
公开(公告)日：2021-06-03
申请号：PCT/US2020/062360
申请日：2020-11-25
Applicant: GRACENOTE, INC.
Inventor： COOVER, Robert , RENNER, Joseph , SUMMERS, Cameron A.
Abstract: Methods, apparatus, systems and articles of manufacture are disclosed methods and apparatus for audio equalization based on variant selection. An example apparatus includes a processor to obtain training data, the training data including a plurality of reference audio signals each associated with a variant of music and organize the training data into a plurality of entries based on the plurality of reference audio signals, a training model executor to execute a neural network model using the training data, and a model trainer to train the neural network model by updating at least one weight corresponding to one of the entries in the training data when the neural network model does not satisfy a training threshold.
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公开(公告)号：WO2021046392A1
公开(公告)日：2021-03-11
申请号：PCT/US2020/049463
申请日：2020-09-04
Applicant: GRACENOTE, INC.
Inventor： COOVER, Robert , WILKINSON, Matthew James , SCOTT, Jeffrey , HONG, Yongju
IPC: H04N21/235 , H04N21/233 , H04N21/435 , H04N21/439 , H04N21/845
Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to identify media. An example method includes: in response to a query, generating an adjusted sample media fingerprint by applying an adjustment to a sample media fingerprint; comparing the adjusted sample media fingerprint to a reference media fingerprint; and in response to the adjusted sample media fingerprint matching the reference media fingerprint, transmitting information associated with the reference media fingerprint and the adjustment.
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公开(公告)号：WO2020051451A1
公开(公告)日：2020-03-12
申请号：PCT/US2019/049953
申请日：2019-09-06
Applicant: GRACENOTE, INC.
Inventor： COOVER, Robert , RAFII, Zafar
IPC: G10L19/018 , G10L19/025 , G10L25/18
Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to fingerprint audio via mean normalization. An example apparatus for audio fingerprinting includes a frequency range separator to transform an audio signal into a frequency domain, the transformed audio signal including a plurality of time-frequency bins including a first time-frequency bin, an audio characteristic determiner to determine a first characteristic of a first group of time-frequency bins of the plurality of time-frequency bins, the first group of time-frequency bins surrounding the first time-frequency bin and a signal normalizer to normalize the audio signal to thereby generate normalized energy values, the normalizing of the audio signal including normalizing the first time-frequency bin by the first characteristic. The example apparatus further includes a point selector to select one of the normalized energy values and a fingerprint generator to generate a fingerprint of the audio signal using the selected one of the normalized energy values.
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公开(公告)号：WO2020051148A1
公开(公告)日：2020-03-12
申请号：PCT/US2019/049357
申请日：2019-09-03
Applicant: GRACENOTE, INC.
Inventor： SCOTT, Jeffrey , WILKINSON, Matthew James , COOVER, Robert , MERCHANT, Shashank
IPC: G06F21/10 , H04N21/83 , G10L19/018
Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to improve media identification. An example apparatus includes a hash handler to generate a first set of reference matches by performing hash functions on a subset of media data associated with media to generate hashed media data based on a first bucket size, a candidate determiner to identify a second set of reference matches that include ones of the first set, the second set including ones having first quantities of hits that did not satisfy a threshold, determine second quantities of hits for ones of the second set by matching ones to the hash tables based on a second bucket size, and identify one or more candidate matches based on at least one of (1) ones of the first set or (2) ones of the second set, and a report generator to generate a report including a media identification.
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