Synchronous Ethernet-based multi-channel audio pickup method and system

Abstract

This application relates to a sound pickup, and discloses a synchronous Ethernet-based multi-channel audio sound pickup method and system. The method includes: within N time slices of a synchronization cycle, the switch sends synchronization cells to N audio collection ends in sequence, wherein, in each time slice, a synchronization cell corresponding to the audio collection end is sent to one audio collection end, the The synchronization cell contains the synchronization clock information and the signal-to-noise ratio of the audio signal in the audio data corresponding to the audio collection terminal received in the previous synchronization cycle; when each audio collection terminal receives the synchronization cell corresponding to this channel, the buffered audio The data is packaged and sent to the switch, the local clock is calibrated according to the synchronous clock, and the voice enhancement processing is performed on the preset frequency band signal in the subsequent audio collection according to the signal-to-noise ratio. The embodiment of the present application solves the problem of synchronous transmission of multiple channels of audio data, and the transmission delay is low, which meets the transmission requirement of high real-time audio signal.

Description

technical field [0001] The present application relates to pickups, in particular to a multi-channel audio pickup technology based on synchronous Ethernet. Background technique [0002] Pickups are widely used in multimedia teaching, recording and broadcasting teaching, remote interactive conferences and other occasions. [0003] In the existing multi-channel audio pickup and audio data transmission methods, the analog microphone is used to collect and amplify the signal and then use the audio cable (canon head audio cable) to transmit. Although the transmission delay is low, it is affected by the multi-channel audio pickup. The influence of different delays and fast attenuation of audio signals transmitted over distances is not conducive to multi-channel audio signal synthesis, enhancement, directional pickup and other processing; and the method of collecting and transmitting through Ethernet through digital microphones, although the transmission distance is long and the lin...

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a multi-channel audio pickup method and system based on synchronous Ethernet, which solves the problems of network congestion and delay jitter during multi-channel audio transmission, and effectively improves the transmission speed of audio data at the same time. Reduced transmission delay

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