Novel camera locating tracking method for intelligent automatic sound mixing system and device thereof

Abstract

A novel camera locating tracking method for an intelligent automatic sound mixing system mainly includes following steps: (1) controlling audio signals and camera signals separately and designing a microphone channel and a camera channel respectively, wherein the microphone channel and the camera channel are characterized in that microphone / camera keys are arranged at the upper ends of the microphone channel and the camera channel, and a microphone / camera selecting switch is further arranged between the microphone channel and the camera channel; (2) designing a camera signal receiver for receiving camera request signals, enabling the camera signal receiver to be connected with a mixing amplifier and a controller in the intelligent automatic sound mixing system, enabling the controller to provide signals for a camera driver and control position transition of a camera; and (3) connecting the mixing amplifier and an input amplifier in the intelligent automatic sound mixing system, and enabling the audio signals to achieve sound amplification according to the working principle of intelligent automatic sound mixing. A phenomenon that projection images run along with variation of sound amplifying signals caused by providing the driving signals for the camera driver through the sound amplifying signals is changed thoroughly.

Description

Technical field [0001] The invention belongs to the technical field of audio equipment, in particular to an audio equipment dedicated to a speech sound reinforcement system. Background technique [0002] At present, intelligent automatic sound mixing equipment with camera positioning and tracking function is often used in speech sound reinforcement systems. The effect is that when the speaker speaks, the camera positioning and tracking function can simultaneously project the speaker's image to the projection screen. It enables participants in different positions to clearly see the speaker through the projection screen, and achieves a good meeting effect with sound and equated sound, which is deeply loved by users. [0003] See attached figure 1 The working principle of the existing intelligent automatic mixing equipment with camera positioning and tracking function is: the audio signal from each microphone is converted into a level signal through the input amplifier, and then sent ...

AI Technical Summary

Problems solved by technology

[0003] See attached figure 1 The working principle of the existing intelligent automatic mixing equipment with camera positioning and tracking function is: the audio signal from each microphone is converted into a level signal by the input amplifier and then sent to the signal comparator to compare with the audio signal. When it is greater than the threshold level of the noise gate, the signal can reach the input terminal of the "maximum value comparator"; in the "maximum value comparator", the N signals from the entrance are electrically Comparing the magnitude of the flat amplitude, only the one with the largest level among the N signals at the entrance is output to the output amplifier to the post-stage sound reinforcement equipment to achieve sound reinforcement; at the same time, it provides a driving signal to the camera driver to align the camera The speaker makes the image of the speaker displayed on the projection screen; it can be seen that the position of the camera positioning tracking display image is controlled by the sound reinforcement signal, that is to say, when a speaker speaks and the sound is amplified, the camera will When the position of the speaker is fixed, the image of the speaker will be displayed on the projection screen; when another speaker speaks and the sound is amplified, the camera will switch to the position of the other speaker, The image of another speaker will be displayed on the projection screen and switched in turn. However, this situation is only applicable to one orderly speech, and one but disorderly speech. For example: in a discussion meeting, the speaker often Transformation, sometimes you and I intersect each other, the camera will change continuously with the continuous change of the sound reinforcement signal, or even a cough, the camera will change its position, making the image displayed on the projection screen appear "running around". "phenomenon, therefore, the existing intelligent automatic sound mixing device with camera positioning tracking function cannot meet the requirements of discussion conferences

Images