Method and device for improving quality of hands-free call, mobile terminal and storage medium

Abstract

An embodiment of the invention provides a method and a device for improving the quality of a hands-free call, a mobile terminal and a storage medium. The method comprises steps as follows: an uplink channel and a downlink channel of the call are monitored when the mobile terminal is in a hands-free call mode, the call state is determined, if the mobile terminal is in a two-party call state, downlink voice signals obtained from the downlink channel are parsed, frequency spectrum features of voices from different sources are obtained, echo frequency spectrum features are identified from the frequency spectrum feature of the voices, voices with the echo frequency spectrum features are subjected to frequency spectral attenuation treatment according to first frequency spectrum attenuation parameters, so that echoes can be inhibited without damaging voice signals of an opposite-terminal caller or causing signal distortion, a home-terminal caller can hear uninterrupted voices, and the voice communication quality is improved.

Description

technical field [0001] The invention relates to the technical field of mobile terminals, in particular to a method, device, mobile terminal and storage medium for improving the quality of hands-free calls. Background technique [0002] In the prior art, users often use mobile phones to make hands-free calls or video chats. When they are in the state of double talk, echo problems often occur. The so-called echo means that the microphone of the caller at the other end is collecting the voice signal of the caller at the other end. At the same time, the collected voice signal broadcast by the local caller and the collected sound produced by the closed environment with reflection are called echo. When all the sounds are sent to the caller at the local end, the caller at the local end will hear the echo while hearing the voice signal of the caller at the other end. Therefore, in order to avoid the impact of the echo on the call quality, it is necessary to The sound is echo-suppre...

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a method, device, mobile terminal, and storage medium for improving the quality of hands-free calls, which can solve the problem existing in the prior art when performing echo suppression processing on all sounds collected by the microphone of the caller at the opposite end. It will affect the voice signal of the caller at the opposite end. While eliminating the echo, it will also destroy the voice signal of the caller at the opposite end to a certain extent, causing signal distortion, so that the caller at the local end hears a stuttering and intermittent sound. Technical Issues Affecting the Quality of Voice Communications

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