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Device and method for recognizing content using audio signals

An audio signal and content technology, applied in the field of identifying content, can solve problems such as increased load, high computational complexity, and complex fingerprint extraction process, and achieve the effect of rapid accuracy, maintaining accuracy and reliability

Active Publication Date: 2014-01-29
ENSWERS CO LTD
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AI Technical Summary

Problems solved by technology

[0005] However, this technology is limited by the high computational complexity and the complex fingerprint extraction process, which increases the load and takes a particularly long time to calculate the result

Method used

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  • Device and method for recognizing content using audio signals
  • Device and method for recognizing content using audio signals
  • Device and method for recognizing content using audio signals

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Embodiment Construction

[0046] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] figure 1 It is a schematic diagram showing the structure of an embodiment of the content recognition apparatus 100 using audio signals according to the present invention.

[0048] refer to figure 1 , the device 100 for identifying content using audio signals according to the present invention (hereinafter referred to as "content recognition device") includes a query fingerprint extraction part 10 , a reference fingerprint database 20 , a fingerprint matching part 30 and a recognition result providing part 40 .

[0049] The query fingerprint extracting section 10 forms a plurality of frames with a predetermined frame length for an input audio signal, and generates a frame-based feature vector for each frame, and thus functions to extract query fingerprints to be compared. In this case, a plurality of frames are formed, and the frame shift size (i...

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Abstract

The present invention relates to a device and method for recognizing content using audio signals and includes: a query fingerprint extraction unit that extracts query fingerprints by forming frames that have a preset frame length for an input audio signal and generates a frame-based characteristic vector for each frame; a reference fingerprint database that stores reference fingerprints for comparison with the query fingerprint and content information corresponding to the reference fingerprints; and a fingerprint matching unit that determines the reference fingerprint matched with the query fingerprint, wherein the query fingerprint extraction unit forms a frame while changing the frame moving length and the interval between the start points of adjacent frames in some sections. According to the present invention, it is possible to provide a device and a method for recognizing content using audio signals that quickly provides a result and maintains accuracy and reliability during matching.

Description

technical field [0001] The present invention generally relates to an apparatus and method for identifying content using an audio signal, and more particularly, to an apparatus and method capable of providing matching content information based on a fingerprint of an input audio signal. Background technique [0002] With the development of network and Internet technologies, and the spread of mobile communication terminals such as smartphones, various services utilizing audio and video have been provided through networks. Further, for these services and methods for determining the recognizability of audio or video, a method using fingerprints has been widely used, and a technology of using fingerprints to identify various pieces of audio or video through a network has been proposed. [0003] The technique of identifying audio or video using fingerprints is realized by using a method of generating feature vectors of frames (a given audio or video signal is divided into multiple ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L15/02
CPCG10L15/02G06F17/30743G10L25/54G06F17/30026G06F16/683H04H60/58H04N21/4394H04N21/8358G10L19/02
Inventor 曺焄荣李载炯C·S·迪里
Owner ENSWERS CO LTD
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