第四届声学，振动，噪声控制国际研讨会(CAVNC 2021)将于2021年8月20-22日在中国桂林举行。本次大会旨在为业内专家学者分享技术进步和业务经验，聚焦催化领域的前沿研究，提供一个交流的平台。
该会议征文涉及领域包括（但不限于）：
Acoustics
Airborne Acoustics
Architectural Acoustics
Bioacoustics
Building and Room Acoustics
Architectural Acoustics
Communication Acoustics
Computational Acoustics
Electro-acoustic and Audio Engineering
Environmental Acoustics
Forensic Acoustics
Aerodynamic and Acoustic Flight Tests
Medical Acoustics
Musical Acoustics
Physical Acoustics
Underwater Acoustics
Acoustical Engineering
Vibration Acoustics
Ultrasonics
Structural Acoustic
Aeroacoustics
Applied Acoustics
Audio Engineering
Electroacoustics
Acoustic Levitation
Acoustical Oceanography
Acoustics for Navigation
Acoustics of Bubbles
Acoustic Tomography
Vibration and Noise Control
Advanced Vibration
Construction Vibration
Vibration Isolation of Buildings
Vibration Modal and Fatigue Analysis
Machinery and Equipment Vibration Isolation
Insulation of building elements
Vibration control
Environmental Noise Assessments
Noise Contour Maps
Noise Impacts
Noise Risk Assessments
Noise Studies for Land-use Planning
Noise Sources and control
Noise Exposure
Stationary Noise Source Measurements
HVAC Noise Control
Industrial Noise Control
Traffic Noise and Vibration
Wind Turbine Noise
Noise Control Engineering
Ambient Noise
Sound insulation