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解決方案

Solution

Center

High Quality Recording System Solution

High quality recording and broadcasting teaching space is positioned for the production of high-quality teaching resources, the system adopts the concept of high-performance design, fully guarantee the integrity of the system video, high-definition and fluency, widely adapted to the school multimedia classroom, open classroom and ordinary classroom teaching recording, interactive application.
High Quality Recording System  Solution

Solution Strength

High fidelity audio acquisition/amplification system

With 6 high-fidelity directional microphones are evenly hoisted to achieve sound acquisition in the classroom, and microphones. The collected sound is processed by professional audio processor for de-noising, mixing and echo cancellation, and then output to the recording and playback owner. Machine and video file mixed encoding generated standard MP4 file saving.

Noise suppression (ANC)

Environmental noise will be collected by microphones along with the speaker's voice. Even in a well-decorated indoor environment, there will be a variety of noises such as fans, air conditioners, personnel moving around, table and chair contact and so on. The built-in automatic noise reduction algorithm of the system can effectively identify and suppress the noise signal in the collected sound signal, and carry out the output sound amplification after effectively eliminating the noise.

Echo cancellation (AEC)

In the process of audio-visual interactive teaching between the local classroom and the remote classroom, due to the unreasonable audio system setting, it is often the case that the body voice of the classroom is amplified in the remote classroom and then collected and transmitted through the microphone of the remote classroom to be heard locally, resulting in poor sound experience for both parties. The system of this scheme can compare the input audio signal collected with the output signal waveform of the previous time, so as to identify the echo signal with the same waveform and filter it to achieve the effect of eliminating the echo and ensure the clear fidelity of the audio.

Automatic gain (AGC)

The system has built-in intelligent gain adjustment function. Regardless of the sound size of the audio source, the audio system will automatically adjust to the predetermined gain range for output after collection, and can maintain the overall sound expansion balance in the classroom, to ensure that the audience's hearing sense is balanced and comfortable automatically under the condition of different teachers' voices.

Application Case Example

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