Acoustic echo cancellation (AEC) audio control system and clock negotiation method thereof
An audio control and clock technology, applied in the field of AEC audio control system and its clock negotiation, it can solve the problems of limited application occasions, inability to switch master-slave relationship, unavailability of audio system, etc., to achieve the effect of flexible configuration and wide application scenarios
Active Publication Date: 2019-09-20
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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Problems solved by technology
[0003] However, the current technical solution has determined the master-slave relationship during design, which means that in some audio systems with multi-master-slave design requirements, the master-slave relationship cannot be switched, resulting in the audio system being unavailable, thus limiting the existing technology. Applications
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[0042] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0043] Before describing the clock negotiation method in this embodiment, the basic working process of the AEC audio control system will be described first.
[0044] refer to figure 1 , the AEC audio control system in this embodiment includes an application processor 100, a codec 200, and an echo cancellation module 300. The application processor 100 is also called an AP, and the echo cancellation module 300 can also be called an AEC module.
[0045] Wherein, the echo cancellation module includes a digital processor 301 , a buffer 302 , a clock interface 303 , an input channel 304 and a reference signal channel selector 305 .
[0046] When the AEC audio control system in this embodiment is working, the digital processor 301 in the echo cancellation module 300 will obtain the audio to be processed from the input channel 304 . The audio to be ...
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The invention discloses an acoustic echo cancellation (AEC) audio control system and a clock negotiation method thereof. The clock negotiation method comprises the following steps: an upgoing channel, needing to be enabled, between an application processor and an echo cancellation module is determined, wherein the upgoing channel between the application processor and the echo cancellation module comprises a primary channel and a plurality of secondary channels; the working states of the multiple channels in the primary channel and the secondary channels are detected; a master-slave mode is determined according to the upgoing channel needing to be enabled, and the working states of the multiple channels in the primary channel and the secondary channels; and according to the master-slave mode, a clock mode of the application processor is configured, and the echo elimination module is informed to configure the clock mode according to the master-slave mode. Compared with the prior art, the AEC audio control system and the clock negotiation method thereof can be suitable for a multi-master-slave design AEC audio control scheme, thus the master-slave mode can be configured more flexibly in practical application, and wider application scenarios are achieved. The AEC audio control system and the clock negotiation method thereof can be widely applied to the technical field of AEC audio control.
Description
technical field [0001] The invention relates to the technical field of AEC audio control, in particular to an AEC audio control system and a clock negotiation method thereof. Background technique [0002] At present, the AEC (Automatic Echo Cancellation, echo cancellation) audio control system generally adopts the master-slave mode, and the master-slave relationship is determined when the system is designed. There are two cases. The first case is that the AP (Application Processor, application processor) is the master, and the echo cancellation module is the slave, and the AP provides the clock to the echo cancellation module during the working process; the second case is that the AP is clearly defined as the slave during design, and the echo cancellation module is The host, during the working process, the echo cancellation module provides the clock to the AP. [0003] However, the current technical solution has determined the master-slave relationship during design, which ...
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Login to View More IPC IPC(8): G10L21/0208
CPCG10L21/0208G10L2021/02082
Inventor 谢芳
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD