Volume control method and device for synthetic voice
A technology for synthesizing speech and volume control, applied in the computer field, can solve problems such as speech distortion and speech quality degradation, and achieve the effects of volume enhancement, reduction of distortion, and improvement of playback quality
Pending Publication Date: 2022-08-02
BEIJING SANKUAI ONLINE TECH CO LTD
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[0004] In the prior art, in post-processing volume adjustment, the synthesized speech is usually linearly adjusted based on a fixed gain value, which may easily lead to speech distortion and lower speech quality.
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[0047] In order to make the purpose, technical solutions and advantages of this specification clearer, the technical solutions of the present application will be clearly and completely described below with reference to the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the description, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.
[0048] When adjusting the volume of the synthesized speech in the prior art, a fixed gain value is usually applied to the volume of the synthesized speech, that is, the amplitude value of each sampling point of the synthesized speech is multiplied by a fixed value, and the synthesized speech is linearly adjusted. volume.
[0049] However, the volume of the...
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The invention discloses a volume control method and device for synthetic speech, and the method comprises the steps: firstly obtaining a to-be-processed text containing a target text marked by a speech synthesis markup language, then inputting the to-be-processed text into a preset speech synthesis model, determining a first sampling point sequence of the synthetic speech corresponding to the to-be-processed text, and obtaining a second sampling point sequence of the synthetic speech corresponding to the first sampling point sequence; and determining a second sampling point sequence corresponding to the target text from the first sampling point sequence. And finally, determining a gain corresponding to the second sampling point sequence according to a preset automatic gain control algorithm, and controlling the volume of the second sampling point sequence. The volume of each frame of the sampling point sequence corresponding to the target text in the synthetic voice is non-linearly adjusted, so that when the volume is greatly enhanced, the distortion degree of the synthetic voice obtained after volume control is reduced, and the playing quality of the synthetic voice is improved.
Description
technical field [0001] The present application relates to the field of computer technology, and in particular, to a method and device for volume control of synthesized speech. Background technique [0002] At present, with the development of computer technology, speech synthesis technology is also constantly improving, and the application of synthesized speech is also emerging. For example, a delivery application can play order information through synthesized speech, and it can also provide navigation services for delivery personnel through synthesized speech. [0003] A common method of speech synthesis is to first analyze the text according to the text content, determine the text features, and then use the acoustic model to model, determine the corresponding mel spectrum according to the text features, and then use the vocoder to generate the speech according to the mel spectrum. Sampling point sequence, and finally adjust the sampling rate, speech rate, volume and pitch ...
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IPC IPC(8): G10L13/027G10L13/033
CPCG10L13/027G10L13/0335
Inventor 韩笑天张永超虞国桥
Owner BEIJING SANKUAI ONLINE TECH CO LTD