A method and system for auditory pulse coding based on sparse coding

A sparse coding and pulse coding technology, which is applied in speech analysis, instruments, etc., can solve the problem of sound event information offset and other problems, and achieve the effect of high fidelity and high coding efficiency

Active Publication Date: 2022-04-26
ZHEJIANG UNIV
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Problems solved by technology

Therefore, when dealing with time-sensitive acoustic tasks, the traditional way of expressing sound has the disadvantage of sound event information shifting.

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  • A method and system for auditory pulse coding based on sparse coding
  • A method and system for auditory pulse coding based on sparse coding
  • A method and system for auditory pulse coding based on sparse coding

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Embodiment Construction

[0088] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0089] The purpose of the present invention is to provide a method and system for auditory impulse coding based on sparse coding, so as to improve the efficiency and fidelity of sound coding.

[0090] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0091] figure 1 It...

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Abstract

The invention relates to an auditory pulse coding method and system based on sparse coding. The method includes: constructing a kernel function group capable of expressing sound basic elements; obtaining a sound signal to be coded; performing preprocessing on the sound signal to be coded to obtain a preprocessed sound signal to be coded; according to the preprocessing After the audio signal to be encoded, a timing matching and pursuit algorithm is used to obtain a plurality of sparse codes of the preprocessed audio signal to be encoded; each of the sparse codes is mapped to an auditory pulse code. The encoding of the auditory impulse pattern generated by the invention can be applied to the impulse neural network, and can ensure high encoding efficiency and high encoding fidelity.

Description

technical field [0001] The invention relates to the field of sound processing, in particular to an auditory pulse coding method and system based on sparse coding. Background technique [0002] Sound structures in nature have non-static and time-dependent properties, such as transients, temporal relationships between acoustic events, and harmonic periodicity. In sound localization, human subjects can reliably detect interaural time differences of less than 10 μs, which corresponds to a binaural sound source offset of about 1 degree. In comparison, an audio CD sampled at 44.1 kHz has a sample interval of 22.7 μs. Studies have shown that some acoustic cues, such as the onset and offset of sound events, harmonic coordination modulation, and sound source localization, rely on precise temporal information. Therefore, it is very important to extract sound structural features containing precise temporal information from nature. However, there are many challenges because in natura...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/02G10L19/107
CPCG10L19/02G10L19/107
Inventor 唐华锦
Owner ZHEJIANG UNIV
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