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    • 5. 发明申请
    • FREQUENCY BAND SELECTION AND PROCESSING TECHNIQUES FOR MEDIA SOURCE DETECTION
    • 用于媒体源检测的频率选择和处理技术
    • US20160021421A1
    • 2016-01-21
    • US14332005
    • 2014-07-15
    • The Nielsen Company (US), LLC
    • Marko PangerJoe KerkesJoze Arh
    • H04N21/439H04N21/436H04N21/462H04N21/41H04N5/60H04N7/10
    • H04N21/4394H04N7/106H04N21/4104H04N21/4131H04N21/42203H04N21/43615H04N21/44227H04N21/4622
    • 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. Example disclosed media source detection methods further include selecting a subset of the frequency bands for which the first trending coefficients and the second trending coefficients have matching directions, and processing respective frequency band values of the first audio signal and respective frequency band values of the second audio signal for the subset of the frequency bands to determine whether the first media source provided the media presented by the media device.
    • 示例性的媒体源检测方法包括确定从与媒体设备通信的第一媒体源获得的第一音频信号的第一趋势系数,其中第一趋势系数对应于一组频带。 所公开的媒体源检测方法还包括确定从由媒体设备呈现的监视媒体获得的第二音频信号的第二趋势系数,其中第二趋势系数对应于该组频带。 公开的媒体源检测方法还包括选择第一趋势系数和第二趋势系数具有匹配方向的频带的子集,以及处理第一音频信号和第二音频的相应频带值的各个频带值 信号,以确定第一媒体源是否提供由媒体设备呈现的媒体。