Audio signal conversion method and device

Abstract

The invention provides an audio signal conversion method and device. The method comprises the steps of: after acquiring a plurality of audio signals, constructing a relational graph according to the pre-calculated similarity between every two audio signals, the relational graph comprising a plurality of nodes and edges connecting the nodes, the nodes being in one-to-one correspondence with the audio signals, each edge of the relational graph corresponding to a weight, and the weight being determined according to the similarity between the audio signals corresponding to two nodes connected by the corresponding edge; after the relational graph is obtained, executing a graph embedding algorithm on the relational graph to obtain an audio vector set corresponding to the relational graph, wherein the audio vector set comprises multiple audio vectors corresponding to the audio signals in a one-to-one mode, and the number of dimensions N of the audio vectors is a preset positive integer. According to the scheme provided by the invention, the number of dimensions of the audio vectors obtained after the relational graph is processed through the graph embedding algorithm can be preset and isirrelevant to the duration of the audio signals, so that the audio vectors with the overlarge number of dimensions can be avoided, and subsequent use and analysis of the audio vectors are facilitated.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to an audio signal conversion method and device. Background technique [0002] Existing short video playback websites will recommend corresponding short videos according to user preferences. By converting the audio signal of the short video into the corresponding audio vector, the matching relationship between the audio of the short video and the user can be effectively established, thereby improving the accuracy of short video recommendation. [0003] An existing method of converting an audio signal into an audio vector is to split the audio signal into multiple segments, each segment containing only one vocabulary, and then convert each segment based on the existing method of converting vocabulary into vectors Converted into a vector, the vectors corresponding to all the fragments are combined to form the audio vector corresponding to the audio signal. [0004] The pro...

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Problems solved by technology

[0004] The problem with the prior art is that since the segment corresponding to each vocabulary needs to be converted into a vector of a specific dimension, if an audio with a long duration and a large number of vocabulary is to be converted, a large dimension vector will be generated. The audio vector not only increases the calculation amount of the conversion process, but also is not convenient for the subsequent analysis and use of the audio vector

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