Many noise countermeasures remain at the level of “symptomatic treatment,” leading to repeated recurrence despite time and cost investment.
In this seminar, we explain the fundamental mechanisms of why vibration becomes sound, across structural, fluid, and electromagnetic domains.
Rather than mere knowledge, we emphasize thinking methods that avoid misidentifying causes and decision-making at the early design stage.
We develop practical skills to achieve noise countermeasures that do not recur.
Do you face these challenges?
- Noise problems reoccur after some time even after countermeasures
- The root cause cannot be identified, leading to ad-hoc solutions
- Vibration is reduced but noise does not decrease as expected
- You are stuck with problems involving fluid, structure, and electromagnetics
- You do not know how to prevent noise at the design stage
Target Participants
- Engineers who struggle with identifying root causes of noise and vibration issues and rely on ad-hoc measures
- Design and development engineers dealing with complex noise involving structure, fluid, and electromagnetic coupling
- Those who feel vibration reduction does not necessarily reduce noise
- Those who want to strengthen decision-making at the design stage to prevent recurrence
- From beginners to experienced engineers who want to systematically reorganize their understanding
Seminar Overview
The biggest reason noise problems remain unsolved is misidentification of causes and separation of disciplines.
In this seminar, we systematically explain the mechanisms of structural, fluid, and electromagnetic noise generation, and how they interact and ultimately radiate as sound.
We also clarify the essential fact that “vibration is not equal to noise,” and identify the governing factors of radiated sound. Through practical case studies, participants learn thinking methods to quickly reach root causes and appropriate decision processes at early design stages.
・ Fundamental causes of recurring noise problems
・ Generation mechanisms of structure, fluid, and electromagnetic noise
・ Mechanism of conversion from vibration to sound
・ Interaction effects leading to noise amplification
・ Practical guidelines for noise suppression in design
Program
- 1. Essence of Noise Problems and Why Countermeasures Fail
1-1 Typical failure patterns in noise countermeasures
1-2 Risks of confusing cause and effect
2. Separating Transmission Paths: Structure vs Airborne Noise
2-1 Fundamental differences between structural and airborne transmission
2-2 Quick identification of dominant path
2-3 Effects of stiffness, fastening, and contact conditions
2-4 Mechanism of vibration-to-sound conversion (radiation efficiency)
2-5 Failure cases due to incorrect path identification
3. [Structure] Why Vibration Becomes Noise
3-1 Relationship between resonance/modes and noise
3-2 Cases where increasing stiffness does not reduce noise
3-3 Key design considerations
4. [Fluid] Mechanisms of Flow-Induced Noise
4-1 Vortex, separation, turbulence, and pressure fluctuations
4-2 Why reducing flow speed does not always solve the problem
4-3 Concepts for low-noise flow path design
5. [Electromagnetics] Overlooked Sources of Electromagnetic Noise
5-1 Effects of electromagnetic force, magnetostriction, and harmonics
5-2 Typical motor and electric machine cases
5-3 Noise amplification due to structural coupling
- 6. Mechanism of Vibration → Noise Conversion (Core Topic)
6-1 Why vibration is not equal to noise
6-2 Governing factors of radiated sound
6-3 Fundamental approach to achieving silence
7. Practical Guidelines for Noise Reduction in Design
7-1 Cross-disciplinary design perspective (structure, fluid, electromagnetics)
7-2 Key decisions at early design stage
7-3 Design process without rework
8. Understanding Cause Identification and Improvement through Case Studies
8-1 Failure cases due to misidentified causes
8-2 Complex cases (structure × fluid × electromagnetics)
8-3 Thinking methods to quickly reach root causes
Key Outcomes of This Seminar
- Ability to quickly identify the true cause of noise and eliminate ineffective countermeasures.
- Acquire decision-making skills and design processes for achieving non-recurring noise reduction.
Required Background Knowledge
- Basic high school-level physics and mathematics are desirable, but explanations are provided so that the essence can be understood even without them.
Benefit: Support via Email or Zoom
- Free Q&A support regarding seminar content (for 15 days from the day after completion)
- Free technical consulting for vibration-related work issues (for 15 days from the day after completion)
Schedule & Viewing Period
- Available year-round (on-demand seminar)
- You can watch for 3 days at your chosen timing.
After application, please enter your preferred 3 consecutive days (weekends and holidays allowed) in the designated form field.
We will accommodate your request as much as possible, but confirmation will be provided later.
Recording Year & Duration
- 2026 edition, approx. 5 hours
Participation Fee
- Campaign fee: 28,000 yen (all-inclusive / approx. half the cost of typical technical seminars. Subject to change without notice due to website renewal campaign)
Participating Companies & Feedback
Instructor
| Title & Name |
Aitop Ltd. Senior Technical Consultant
Certified Engineer, Japan Society for Noise Control Engineering
Recipient of Technical Development Award, Acoustical Society of Japan
Former part-time lecturer at Nagoya University Graduate School (lectured in English to international students: 2021–2024)
Hideo Kobayashi
|
| Specialty |
Theory and applied technology of vibration and noise engineering using AI |
| Experience |
With over 30 years of experience as a technical consultant and seminar lecturer, he has taught extensively at industrial technology centers across Japan and seminars hosted by Nikkan Kogyo Shimbun. |
*The seminar program above may be subject to minor changes.