Yealink explores Yealink's simplified explanations of common business communication terms regarding the application of three major communication devices, IP Phones, Video Conferencing Equipment and Headsets running on Microsoft, Zoom and other systems, in business work.
Whether in daily life or at work, you have likely encountered noise. In a physical context, noise refers to the irregular and chaotic sounds characterized by varying frequencies and amplitudes of sound waves. Noise can distract individuals, leading to communication difficulties and the transmission of inaccurate information.
We categorize conference room noise into the following two categories:
Transient noise: refers to sudden sounds, such as mouse clicks, keyboard taps, and similar disturbances.
Steady-state noise: refers to consistent and stable sounds, such as the hum of an air conditioning unit or the noise of a car engine.
1. Avoid outdoor environmental noise sources, such as traffic, and select a quiet meeting room whenever possible.
2. Reduce the noise in the meeting room, such as air conditioning noise. The environmental noise level requirement for the meeting room is 40 dB(A).
| Decibel value | illustrate |
| 1 decibel | The lowest threshold that the human ear can hear. It may not be perceived in real life. |
| 15 decibels | very quiet. For example, the sound of a pin falling from a height of 1 centimeter at a distance of 1 meter. |
| 40 decibels | The environment is relatively quiet, which is conducive to concentration, thinking and relaxation. For example, the sound of a normal conversation. The EPA has determined that humans can tolerate (no hearing damage, sleep & learning disorders |
| 70 decibels | The maximum noise level that the U.S. Environmental Protection Agency has determined can be tolerated by humans (without causing hearing damage, sleep & learning disorders, anxiety, etc.), such as background noise in downtown areas, subways, and bus stations. |
| 85 decibels | can cause hearing damage. For example, the noise during takeoff and landing of airplanes may reach 85 decibels or above. |
* Appendix: Common decibel values in life
3. Adjust the distance between conference equipment, such as microphones, and noise sources, such as air-conditioning outlets. It is generally recommended to maintain a distance of at least 1.2 meters.
Intelligent noise cancellation technology is founded on advanced deep neural networks designed for effective noise reduction.The system can simultaneously process both the amplitude and phase information of voice signals, significantly enhancing the noise cancellation effect, particularly at low signal-to-noise ratios. This greatly improves the ability to restore human voices and effectively reproduces ideal, clean voice signals. Additionally, it can process noisy voice signals in real time and perform real-time noise cancellation on these signals.
16K and 32K noise cancellation refer to the noise cancellation technology based on sampling frequency. The sampling frequency indicates how many times the analog audio signal is sampled per second. A higher sampling frequency allows for the capture of more high-frequency details and rapidly changing audio signals, resulting in improved audio quality and more accurate sound reproduction.
Currently, Yealink's intelligent noise cancellation technology has achieved 16K noise cancellation. To reach 32K noise cancellation, Yealink’s R&D team is actively optimizing the training dataset and model structure to further enhance voice restoration and sound quality. This advancement is expected to be implemented in Yealink conference room equipment in 2024.
The Yealink experimental team has created a noise library that includes hundreds of different sounds.
Covering both transient and steady-state noise across various scenarios, comprehensive and standardized noise samples provide robust data support for the algorithm team to optimize the training dataset and model structure.
Currently, Yealink's conference room equipment—including the MeetingBoard, MeetingBar AX0 series, MeetingEye 500 series, MVC series, and the VCM34, VCM36-W, and VCM38 microphones—now features advanced intelligent noise cancellation technology.
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