A Classroom Live Sound Pickup and Sound Reinforcement System That Can Adapt to the Position of the Lecturer

Abstract

The invention relates to an onsite classroom pickup and loudspeaking system adapted to the position of a speaker. The system comprises a pickup unit, a loudspeaker array and a processing circuit, wherein the pickup unit converts obtained audio signals of the speaker into electrical signal based on the position of the speaker, the processing circuit removes noises of the electrical signals and amplifies the de-noised signals to generate driving signals, and the loudspeaker array plays sounds of the speaker according to the driving signals. The system of the invention needs only one pickup unit, the speaker can walk in the classroom to teach class needless of wearing extra devices, local environmental noises can be effectively inhibited, and the problem of howling is eliminated.

Description

technical field [0001] The invention relates to a classroom on-site sound pickup and sound reinforcement system, in particular to a classroom on-site sound pickup and sound reinforcement system capable of adapting to the position of a lecturer. Background technique [0002] With the development of our country's economy, the school's basic education network has gradually developed from the "School-to-School Communication" project and the "Agricultural Remote Project" to the realization of "Class-to-Class Communication", which means that school education informatization will be achieved by infrastructure construction and Transition from primary application to in-depth and effective application. [0003] However, there are still certain problems in modern information hardware equipment. Teachers will not be fixed on the podium during the classroom teaching process, and often need to walk in the classroom to teach in order to understand the situation of each student in a timely...

AI Technical Summary

Problems solved by technology

The traditional sound pickup and sound reinforcement system is fixedly installed on the podium, so when the classroom is far away from the podium, it cannot play the role of sound reinforcement

[0004] At present, there are also plans to use wireless microphones, but wireless microphones have the disadvantages of needing to be charged, being easily damaged, and having a short lifespan, which greatly affects the user experience

[0005] In addition, there are still many defects in the traditional sound pickup and sound reinforcement system, such as: the local environmental noise cannot be suppressed, and the expanded sound is mixed with local noise, resulting in poor effect; there is a howling problem, and the expanded sound is picked up again causing howling

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