Elite Remote Interactive Teaching Audio Solution
A Preface
Traditional teaching methods are often constrained by various factors such as time and space. In remote areas, these limitations are further exacerbated by issues with software and hardware infrastructure, leading to a slow transmission of knowledge. The lack of effective analysis and poor implementation contribute to a significant disparity in educational quality across different regions.
Hangzhou Elite Audio Technology Co., Ltd. leverages its advanced algorithm technologies to address the growing demand for remote interactive teaching. We aim to develop a comprehensive audio solution for online education, distance learning, and broadcast teaching systems. By collaborating with multiple stakeholders, we have designed an integrated remote interactive educational audio system that enhances communication and engagement across classrooms.
Demand Analysis
• Utilizing full-duplex audio-visual synchronization technology to enable real-time classroom interaction.
• Main lecture room: Facilitates interaction between the main classroom and remote classrooms while maintaining normal local teaching activities.
• Off-site classroom: Enables sharing of lecture content from the main classroom and supports real-time cross-location interaction and participation.
Three-inch System Design
1. System Composition and Principle
1.1. Main Lecture Room: Equipped with the OS-300 echo cancellation pickup, which is connected to both the audio-video codec and the sound amplification device. The two audio cables of the OS-300 are connected to the Line In and Line Out ports on the codec side, while the USB port provides 12V power supply. The audio output is connected to external devices. This setup allows for either desktop or ceiling installation, ensuring high-quality sound collection from the lecturer and enabling seamless remote communication.
1.2. Off-site Classroom: Features the KO-280 high-fidelity omnidirectional microphone, installed on top for optimal sound capture. It connects to the OS-700 digital audio host for mixed signal processing, including echo cancellation and feedback control. The OS-700 can directly connect to speakers and wireless microphones, enhancing the overall audio experience in remote classrooms.
1.3. Scene Wiring Diagram
2. System Technical Requirements
2.1. Lecture Room
2.1.1. The main speaker requires clear and accurate sound pickup. Therefore, a high-fidelity noise reduction microphone with echo cancellation is essential. To avoid interference during local interactions, the OS-300 uses a limited-level sound acquisition process with an omnidirectional range of up to 3 meters.
2.1.2. The OS-300 can be installed on the desktop or ceiling near the lecturer for optimal performance.
2.2. Off-site Classroom
2.2.1. Remote classrooms focus on interactive Q&A sessions. Due to varying classroom sizes and configurations, it's important to strategically place microphones to ensure complete coverage without any dead zones.
2.2.2. With multiple microphones capturing sound from different angles, the OS-700 digital audio host performs calculations to encode the mixed signals and manage echo cancellation during two-way communication.
3. Equipment Selection
3.1. For the lecture room, the OS-300 is recommended due to its echo cancellation, high-fidelity noise reduction, lightning protection, and reverse polarity protection features, offering excellent sound quality and reliability.
3.2. For off-site classrooms, the KO-280 high-fidelity microphone is ideal, paired with the OS-700 digital audio host for sound source processing. The OS-700 can handle input from other parties, perform echo cancellation, and support audio coding.
3.2.1. The OS-700 can also work with external wireless microphones to capture voice from the remote end, such as during Q&A sessions or teacher explanations.
3.2.2. The OS-700 comes with three 3.5mm audio output ports, allowing direct connection to sound amplification devices for immediate use.
Large capacity waterproof backpack, lightweight waterproof computer bag, casual waterproof backpack, PVC waterproof backpack
Dongguan Jinying Handbags Co.,Ltd , https://www.jinyingbag.com