Audio signal duration adjustment method and device
A time length adjustment and audio signal technology, applied in the field of data communication, can solve problems such as audio quality degradation and audio signal distortion
Active Publication Date: 2018-11-20
HUAWEI TECH CO LTD
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[0005] Embodiments of the present invention provide a method and device for adjusting the duration of an audio signal to overcome the problem in the prior art that all audio signals are adjusted using a uniform duration adjustment length, causing distortion of some audio signals and resulting in a decline in audio quality
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[0236] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0237] The method provided by each embodiment of the present invention is executed by the receiving end. The following briefly introduces the processing process of the audio frame by the receiving end. figure 1 It is a schematic diagram of the processing flow of the audio frame at the receiving end, such as figure 1 As shown, the receiver mainly ...
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The embodiment of the invention provides a duration adjustment method and device for an audio signal, and the method comprises the steps: a receiving end determines the type of duration adjustment of a current audio frame according to a JBM mode of the current audio frame and the JBM mode of a previous audio frame of the current audio frame, and then determines whether the duration of a time domain signal corresponding to the current audio frame needs to be adjusted or not according to the type of duration adjustment of the current audio frame, and adjusts the duration of the time domain signal corresponding to the current audio frame according to the type of duration adjustment of the current audio frame when the duration of the time domain signal corresponding to the current audio frame is determined. When the above method is used for the duration adjustment of the current audio frame, the method can achieve the duration adjustment according to the type of duration adjustment of the audio frame, thereby enabling the characteristics of different audio frames to be considered during the duration adjustment, guaranteeing that each audio frame has good tone quality, and improving the quality of audio signals.
Description
technical field [0001] Embodiments of the present invention relate to data communication technology, and in particular to a method and device for adjusting the duration of an audio signal. Background technique [0002] In the Voice over Internet Protocol (VoIP) communication system, delay jitter will occur during the transmission of data packets, and in severe cases, data packets will be lost, resulting in voice distortion and resulting in poor VoIP service quality. decline. [0003] In the current prior art, the quality of the VoIP service is improved by reducing delay, smoothing and compensating for packet loss in different layers of the VoIP communication system. In a commonly used method, the receiving end compensates the delay jitter of data packets in the network by implementing efficient Jitter Buffer Management (JBM for short). In JBM processing, the receiving end does not play immediately after receiving the data packet, but waits in the buffer for a period of tim...
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IPC IPC(8): G10L21/0224
Inventor 庞立昀张兴涛苗磊
Owner HUAWEI TECH CO LTD