YANS YS-M23-2 USB Mini Port Video Conference Expanded Omnidirectional Microphone 1. Using USB driver-free design, 5 dual-condenser microphones work synchronously, making the radio more sensitive 2. 360-degree omnidirectional high-sensitivity dual-capacitor microphone, effective diameter of 6-12 meters, no dead spots within 20-60 square meters, free to walk around when one person is in a meeting, and everyone can sit in their own position when meeting with multiple people No need to approach or move the omnidirectional microphone 3. Using 256ms echo cancellation algorithm, built-in voice automatic gain balance (ALC) function 4. The design of hands-free speaker microphone makes it easier for users to participate in software video conferences or use instant messaging software 5. Built-in high-performance intelligent DSP chip, input and output audio directly on the chip for high-speed calculation processing, not only can effectively block noise, eliminate echo, high-speed processing 16K-24K audio sampling, calculation, so that software video conferencing applications can be obtained Clear and clean voice communication quality 6. A 3.5mm microphone and headphone audio jack is provided, allowing users to connect a microphone or headphone. And provide a 3.5mm audio input and output interface, which can be directly connected to mobile phones, tablet computers and other devices 7. Compatible with USB 1.0 & 2.0, free drive design 8. Equipped with intelligent two-color led lights, which can easily display the status of each function 9. Compatible with various embedded terminals and various video conferencing software 10. Speaker sampling frequency: 24Khz-48Khz, microphone sampling frequency: 16Khz 11. Operating voltage: 4.5V-5.5V 12. Sensitivity: -36 +- 3 dB 13. Frequency: 100-10,000 Hz 14. Output impedance: less than or equal to 0.68 kiloohms 15. Sound pressure level: 110dB 16. Signal to noise ratio: greater than or equal to 58dB 17. Compatible system: Windows8windows7vistaxp2000Mac10.5