Speech quality improving method and system and mobile terminal

Abstract

The invention discloses a speech quality improving method and system and a mobile terminal. The method comprises: obtaining, by the mobile terminal, a spatial position from the face of a user to the mobile terminal; determining audio parameters corresponding to the spatial position from the face of the user to the mobile terminal; adjusting audio parameters of a speech processing module of the mobile terminal to the audio parameters corresponding to the spatial position from the face to the mobile terminal; and outputting a speech signal, which is received from a network side, after being processed by the speech processing module, the audio parameters of which are adjusted. By means of the method, the hands-free frequency response and sensitivity can basically be kept in a relatively good state and can be basically kept unchanged, thereby avoiding the case of low frequency or medium-high frequency loss of a frequency response curve due to change of the distance or the angle from the mobile terminal to the face, improving speech quality in video call, and improving the listening effect of the user.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, system and mobile terminal for improving voice quality. Background technique [0002] Now, mobile terminals are widely used and popularized. As a new function of mobile terminals, video calling has been used more and more. The improvement of voice sound quality in video calls is also a subject that all mobile terminals are devoted to researching. [0003] In terms of the hearing characteristics of the human ear, the low frequency is the basic sound. If the sound pressure value of the low frequency sound is not enough, it will appear pure in tone and lack of strength. This part has a great impact on hearing. For the mid-frequency sound, it is the most sensitive area of ​​the human ear. Appropriate enhancement is conducive to enhancing the presence of the playback, and is conducive to improving the clarity and layering. The enhancement of high-frequency sound can make the ton...

AI Technical Summary

Problems solved by technology

For the hands-free mode, the spatial position (such as distance and angle) from the mobile terminal to the head of each user is not exactly the same when using it; and the current debugging and calibration of the voice quality in the video call is to place the mobile terminal Carried out at a fixed position, in the prior art, the sensitivity and frequency response of the voice signal output by the low-pass filter used in the hands-free mode voice signal processing in the video call are based on the standard position (such as the position facing the mobile terminal camera 20cm) ) test, but due to the different usage habits of users, the angle and distance from the mobile terminal to the face are very different, so the frequency response of the mobile terminal and Sensitivity changes relative to user experience

In this way, the actual user experience is that when the spatial position of the mobile terminal to the face is close to the standard value, the treble is lacking, and the sound clarity and layering are not strong; when the spatial position of the mobile terminal to the human face is farther than the standard value, the bass is lacking, and the sound sounds The monotony is not full enough, whether it is the bass or the lack of middle and high frequency frequencies, it will affect the user's listening effect

[0005] It can be seen that the debugging and calibration of the voice quality in the hands-free mode of video calls in the prior art is carried out by placing the mobile terminal at a fixed position, but as the angle and distance from the mobile terminal to the face change, the mobile terminal The frequency response and sensitivity of the voice signal to the face will change, and this difference will affect the effect of the voice quality

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