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Audio fingerprint retrieval method and retrieval device

An audio fingerprint and audio signal technology, applied in the field of audio fingerprint retrieval methods and devices, can solve the problems of excessive memory, low retrieval efficiency, and excessive consumption, and achieve the effects of reducing memory, improving retrieval efficiency, and reducing time-consuming.

Active Publication Date: 2013-05-08
SHENZHEN SHI JI GUANG SU INFORMATION TECH
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  • Abstract
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Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide an audio fingerprint retrieval method and device, which can solve the problem of excessive memory consumption and excessive time consumption of existing audio fingerprint retrieval methods, and retrieval problems under the premise of ensuring the accuracy of audio fingerprint retrieval. The problem of inefficiency

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0045] In this embodiment, taking a song as an example, the audio fingerprint retrieval process is described in detail.

[0046] Specifically, firstly, the audio fingerprint of the song and the song information are correspondingly stored in the hash table. When audio fingerprint retrieval is required, the user inputs an audio segment, and the audio fingerprint is obtained based on the audio signal of the audio segment, and then the audio fingerprint is obtained from the Query the corresponding song information in the hash table, and obtain the song information including the audio segment.

[0047] like Figure 4 As shown, the process of storing the audio fingerprint and song information of a whole song may specifically include the following steps:

[0048] Step 1: For the audio signal of the given whole song, randomly extract its spectrogram with a window length of 11.6*w milliseconds in d / N milliseconds on average to obtain a framed spectrogram;

[0049] Step 2: Detect whet...

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Abstract

The invention discloses an audio fingerprint retrieval method and a retrieval device. The audio fingerprint retrieval method includes the steps of carrying out framing process to audio signals of an audio clip, determining key frames in each subframe obtained through the framing processing by means of an onset detection function (ODF) method, obtaining audio fingerprints of the key frames, carrying out retrieval according to the obtained audio fingerprints, and obtaining audio file information corresponding to the audio clip. Correspondingly, the invention further discloses an audio fingerprint storage method and a storage device. The audio fingerprint storage method and the storage device can greatly reduce wasted memory due to audio retrieval, greatly reduce wasted time due to the audio retrieval, and improve retrieval efficiency on the premise of ensuring accuracy rate of audio fingerprint retrieval.

Description

technical field [0001] The invention relates to audio processing technology, in particular to an audio fingerprint retrieval method and device. Background technique [0002] An audio fingerprint is a set of unique identifiers (eg, symbols or numbers) calculated from an audio signal. Audio fingerprint retrieval can refer to: the user inputs an audio segment, and the audio fingerprint calculated by the audio signal of the audio segment is submitted to the network server, and the network server obtains the audio file ( For example, the original information of the song), such as the title of the song, the name of the singer of the song and other information. The audio fingerprint retrieval technology can realize valuable applications such as searching for song titles after recording, automatic naming of mp3 and automatic lyrics matching, and audio and video ranking, especially on the wireless Internet, which will have greater product value. [0003] At present, the existing au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/54G06F17/30
Inventor 易立夫张远涛
Owner SHENZHEN SHI JI GUANG SU INFORMATION TECH
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