公开(公告)号：US08768495B2

公开(公告)日：2014-07-01

申请号：US13151365

申请日：2011-06-02

申请人： Alexander Paul Selby ,  Mark St John Owen

发明人： Alexander Paul Selby ,  Mark St John Owen

IPC分类号： H04R25/00 ,  G06F17/00

CPC分类号： G10L25/51 ,  G10L25/18

摘要： Automatic recognition of sample media content is provided. A spectrogram is generated for successive time slices of audio signal. One or more sample hash vectors are generated for a time slice by calculating ratios of magnitudes of respective frequency bins from a column for the time slice. In a primary evaluation stage an exact match of bits of the sample hash vector is performed to entries in a look-up table to identify a group of one or more reference hash vectors. In a secondary evaluation stage a degree of similarity between the sample hash vector and each of the group of reference hash vectors is performed to identify any reference hash vectors that are candidates for matching the sample media content, each reference hash vector representing a time slice of reference media content.

摘要翻译： 提供样品介质内容的自动识别。 为音频信号的连续时间片段生成频谱图。 通过计算来自时间片的列的相应频率仓的幅度的比例，为时间片生成一个或多个样本哈希矢量。 在主评估阶段，对查询表中的条目执行样本哈希向量的比特的精确匹配，以识别一个或多个参考哈希向量的组。 在次级评估阶段，执行样本哈希向量与参考散列矢量组中的每一个之间的相似程度以识别作为用于匹配样本媒体内容的候选的任何参考散列向量，每个参考散列向量表示时间片 参考媒体内容。