Real-time digital voice changing method

A real-time voice and digital technology, applied in the audio field, can solve the problems of low naturalness and intelligibility of voice-changing effects, high delay in voice-changing processing, and high computational complexity, and is conducive to real-time system implementation, voice The effect of guaranteed naturalness and low computational complexity

Active Publication Date: 2019-04-12
南京南大电子智慧型服务机器人研究院有限公司 +2
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Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a real-time digital voice change method, which overcomes the following three problems in the current mainstream voice change methods: 1. The naturalness of the sound change effect and The intelligibility is low. 2. The voice after the voice change is easy to recover. 3. The time delay of the voice change processing process is high, and the computational complexity is high.

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[0027] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0028] A digital real-time voice changing method, such as figure 1 As shown, it includes the following seven parts:

[0029] 1. Distinguish unvoiced sounds and non-voiced sounds (voiced sounds, voiced consonants, fricatives) in speech through phonological segmentation;

[0030] 2. Unvoiced sounds (voiced sounds, voiced consonants, fricatives) are decomposed by linear prediction, and the original speech is divided into two parts: the original fundamental sound and th...

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Abstract

The invention discloses a real-time digital voice changing method which comprises the following steps: adjusting and analyzing a non-unvoiced sound part of original voice, extracting a signal from a specific person fundamental tone base to replace an original fundamental tone according to a comparison result, and further performing synthesis and superimposition, so as to obtain a voice changing signal. According to the method, the voice changing effect has the characteristics of being high in naturalness and intelligibility; the change d voice is not recovered easily, so that the method is high in confidentiality; meanwhile, the method has the characteristics of being low in delay and complexity.

Description

technical field [0001] The invention relates to a voice changing method, which belongs to the field of audio technology. Background technique [0002] Voice change is an important speech processing technology, which is widely used in speech interaction, secure communication, special sound effects of consumer electronic equipment, etc. [0003] Traditional voice change mainly uses frequency modulation technology, which mainly has the following technical defects: first, the naturalness of the voice after voice change is low, and at the same time, the intelligibility is reduced; secondly, the voice change method is simple and easy to be deceived Reverting to the original voice will affect the effect of confidential communication; finally, the complexity of voice change is high, the processing delay is large, and the real-time performance is limited. Contents of the invention [0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the presen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/007
CPCG10L21/007
Inventor 陈锴刘晓峻狄敏
Owner 南京南大电子智慧型服务机器人研究院有限公司
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