Dual-engine Wireless Dual-diaphragm Conference Unit Desktop Conference Discussion HY-5720C HY-5720D

— Employs DSP/DDOV digital processing and transmission technology, conforming to IEC60065 international standards;

— Complies with GB4943.1-2022 safety requirements standards for audio-visual, information technology, and communication technology equipment;

— Built-in 2×14mm high-fidelity gold-plated capacitor dual-diaphragm microphone, based on an improved variable-step DDCS adaptive algorithm for noise reduction, significantly reducing background noise and improving signal-to-noise ratio and pickup clarity;

— Unique cavity and one-piece molded pickup mesh design allows for precise control of the pickup angle, avoiding acoustic feedback and howling;

— The microphone boom uses 32,500 high-density acoustic interference holes with a diameter of 0.4mm. Precise calculation of hole diameter and spacing, combined with interference correction technology, precisely controls pickup details, effectively improving the pickup sensitivity across the human voice frequency response range;

— High-sensitivity pickup design with built-in automatic gain control (AGC) function, effective pickup distance up to 60-100cm.
— Equipped with a microphone noise suppression circuit system, using a fifth-order Butterworth low-pass filter for voice noise reduction processing;

— Employs a gravity-sensing touch sensor chip with an elliptical track indicator light. The panel features an embedded Mohs hardness level 6 touch glass panel, eliminating mechanical buttons and producing no button sounds during switching;

— Equipped with a 2.44" high-brightness LCD display, supporting information such as battery level, signal strength, ID address, volume, transmission power, and speech timer;

— Features a speech timer function, supporting dynamic display of speech time;

— High-fidelity lossless audio transmission technology, 48kHz audio sampling frequency, frequency response up to 20Hz-20kHz;

— Fully digital DSSS modulation communication technology, ISM and UHF dual-engine frequency bands, using a wireless transceiver for voice data interaction, ensuring audio latency of less than 5.5ms;

— Employs 128-bit AES Rijndael and 48-bit PIN code encryption protection to prevent eavesdropping and unauthorized access, ensuring the privacy of the meeting;

— Automatically identifies interference sources across the entire frequency range and automatically and silently switches to interference-free frequency ranges to ensure real-time normal system communication;

— Employs digital ID addressing, allowing for custom ID numbers to ensure unique ID encoding;
— Features 2 speaking modes: First-In-First-Out (FIFO) and Limited Speaking Mode. The speaking capacity can be set to 1/2/3/4 units.

— Built-in 3000mAh rechargeable battery with dynamic power display and low battery reminder, supporting up to 10 hours of use.

— Optional wireless charging function, completely solving the problems of charging cables and insufficient power during long meetings.

— Utilizes advanced electrostatic isolation technology to prevent static electricity generation even in dry environments.

— Supports connection of 4 chairperson units. The chairperson has control over the speaking order and priority, and can mute other representatives who are speaking.