Structure-borne radiated noise is actually more common than expected. Most noise falls into the category of radiated noise.
Even after implementing vibration reduction measures, have you experienced cases where noise (radiated noise) does not decrease as expected?
The main reason is that attention is focused only on the magnitude of vibration, without sufficiently capturing the mechanism by which it is radiated as sound to the outside.
In this seminar, based on the fundamentals of radiated noise, we clarify “why reducing vibration does not reduce noise,” and explain the concepts and practical methods for efficiently reducing noise.
We systematically organize how to identify vibrations that govern noise and how to proceed with rational and efficient noise (vibration radiated noise) reduction design in a practical manner.
This is the only seminar in Japan that systematically and practically covers this theme.
Do you have any of these issues?
- Noise does not decrease as much as expected even after vibration countermeasures
- You look at FFT, vibration data, and noise data, but cannot identify the cause
- You repeatedly implement noise reduction measures, wasting time and cost
- Although the structure should be quiet, only specific frequencies are prominent
Target Participants
- Design, development, and evaluation engineers involved in noise and vibration control
- Those working on noise reduction but seeing limited effectiveness
- Those performing vibration analysis but struggling with its relation to noise
- Engineers aiming to reduce redesign work
- Engineers who want to accurately identify the root cause of noise problems
Seminar Overview
Despite implementing noise countermeasures, there are many cases where noise is not reduced as expected. In many cases, this is due to focusing only on vibration magnitude without sufficiently understanding the mechanism by which sound is radiated externally.
In this seminar, we return to the fundamentals of radiated noise and clarify “why reducing vibration does not reduce noise.” We explain practical methods for identifying vibrations that govern sound and for designing effective noise reduction strategies.
・ Why vibration and noise do not correlate
・ How to identify vibrations that govern sound
・ Basic mechanism of radiated noise
・ Criteria for avoiding ineffective countermeasures
・ Practical design approaches
Seminar Program
- 1. Why is “radiated noise large even when vibration is small”
1-1 Overlooked acoustic radiation efficiency
1-2 Relationship between local vibration and sound radiation
1-3 Why sound radiation depends on frequency
2. Correct understanding of vibration and sound
2-1 Why vibration level is not proportional to sound pressure level
2-2 Basic image of panel vibration and sound radiation
2-3 Differences between sound-producing and non-sound-producing vibration
3. Methods for identifying dominant factors
3-1 Why vibration alone cannot identify the cause
3-2 Relationship between sound and vibration
3-3 Procedure for identifying dominant surfaces and modes
4. Typical real-world failure patterns
4-1 Sound radiation due to plate resonance
4-2 Sound leakage from openings and gaps
4-3 Noise increase due to internal cavity effects
5. Measurement and visualization for field use
5-1 Basics of vibration and noise measurement for radiated noise analysis
5-2 Simple methods to estimate noise sources from vibration
5-3 Techniques to narrow down causes with limited measurements
6. Identifying causes through analysis
6-1 Linking vibration modes and sound radiation
6-2 How to build minimal analysis models
6-3 Correlating measurements and analysis results
7. Effective countermeasures and design implementation
7-1 Typical “ineffective countermeasures”
7-2 Design concept for suppressing radiating surfaces
7-3 Proper use of stiffness, mass, and damping
7-4 Cost-effective improvement methods
Main Outcomes
- You will be able to correctly identify the causes governing radiated noise.
- You will reduce ineffective measures and efficiently reduce radiated noise.
Required Background Knowledge
- Basic knowledge of vibration and noise is desirable, but even beginners can understand the essential points through clear explanations.
Benefits: Email or Zoom Support
- Free Q&A support regarding this seminar content (15 days from the day
after completion)
- Free technical consulting for vibration-related issues (15 days from the day after completion)
Viewing Period
- Available year-round (on-demand seminar)
-
You can view the content for 3 days at your chosen timing.
Please enter your preferred viewing dates (3 consecutive days, including weekends/holidays) in the inquiry field of the application form.
We will try to accommodate your preferred schedule as much as possible, but confirmation will be provided later.
Recording Year & Duration
Fee
- Campaign fee: 28,000 yen (all inclusive / approx. half the standard seminar price. Subject to change without notice due to website renewal campaign pricing)
Participating Companies & Feedback
Instructor
| Title & Name |
Aitop Co., Ltd. Senior Technical Consultant
Certified Engineer, Japan Society for Noise Control Engineering
Japan Acoustical Society Technical Development Award Winner
Former Adjunct Lecturer, Nagoya University Graduate School (lectured in English: 2021–2024)
Hideo Kobayashi
|
| Specialty |
Theoretical and applied engineering of vibration and noise using AI |
| Experience |
Over 30 years of experience as a technical consultant and seminar instructor, with extensive achievements including seminars hosted by regional industrial technology centers and Nikkan Kogyo Shimbun. |
*The above seminar program may be subject to minor changes.