Audio signal switching method and device

Abstract

The invention provides an audio signal switching method and an audio signal switching device. The audio signal switching method comprises the following steps of: when an audio signal switches, performing weighted processing on a first high-frequency band signal of the audio signal of a current frame and second high-frequency band signals of the audio signals of first M frames so as to obtain a processed first high-frequency band signal, wherein M is greater than or equal to 1; and synthesizing the processed first high-frequency band signal and a first low-frequency band signal of the audio signal of the current frame into a broad band signal. By processing the first high-frequency band signal of the current frame according to the second high-frequency band signals of the audio signals of the first M frames, the second high-frequency band signals of the audio signals of the first M frames can transit to the processed first high-frequency band signal smoothly, so that the audio signals with different band widths can be switched smoothly and the quality of the audio signals received by a user is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a voice and audio signal switching method and device. Background technique [0002] At present, during the transmission of voice and audio signals in the network state, due to the different network conditions, the network will truncate the code stream of the voice and audio signal transmitted from the encoding end to the network at different bit rates, so that the decoding end will use the truncated The code stream decodes voice and audio signals with different bandwidths. [0003] In the prior art, due to the different bandwidths of voice and audio signals transmitted in the network, during the transmission of voice and audio signals, there are switching from narrowband voice and audio signals to wideband voice and audio signals, and switching from wideband voice and audio signals to narrowband voice signals. A phenomenon in which audio signa...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor has found that there are at least the following problems in the prior art: due to the difference in the information in the high-band signal between the narrowband speech and audio signal and the wideband speech and audio signal, when switching speech and audio signals of different bandwidths , there will be a phenomenon of sudden change in the energy of the audio signal, which will cause the user to feel uncomfortable in hearing, and cause the quality of the user to receive the audio signal to deteriorate.

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