In this seminar, we clearly explain the difference between unpleasant sound and pleasant sound, and the concept of sound quality design based on human auditory characteristics.<br>
From the fundamentals of sound quality evaluation to understanding the mechanisms of unpleasant sound generation, you will systematically acquire practical pleasant-sound design methods applicable in engineering practice.<br>
Furthermore, based on the relationship between vibration and structural design, we introduce practical approaches that integrate sound quality and mechanical design through concrete examples.<br>
Do you have these challenges?
- Even though noise levels are reduced, the sound is still considered unpleasant
- Unable to identify causes of unpleasant sound, countermeasures are ad hoc
- Do not know how to apply sound quality metrics (loudness, sharpness, roughness, etc.) to design
- Vibration countermeasures and sound quality improvement cannot be balanced, leading to design confusion
- Intended pleasant-sound design instead results in an unnatural sound
Target Participants of This Seminar
- Engineers engaged in mechanical design and product design
- Professionals in development and quality departments responsible for noise and vibration countermeasures
- Those working on product sound quality improvement and pleasant-sound design
- Those aiming not only for noise reduction but also for product value enhancement
- Those who want to systematically learn sound quality evaluation and pleasant sound design
Seminar Overview
This seminar explains not simple noise reduction but the concept and practical methods of designing sound quality from the perspective of “pleasant sound.”
You will learn design approaches that integrate vibration and structural design by understanding the mechanisms of unpleasant sound generation and considering sound quality metrics and human auditory characteristics.
Furthermore, through actual product case studies, you will understand successful patterns and failure cases in detail and acquire knowledge directly applicable to practice.
・ Fundamental differences between pleasant sound and unpleasant sound and their impact on design
・ Relationship between sound quality metrics and subjective/objective evaluation
・ Mechanisms and dominant factors of unpleasant/harsh sounds
・ Pleasant sound design methods considering frequency and temporal variations
・ Practical approach integrating vibration/structural design and sound quality design
Seminar Program
- 1. What is pleasant sound?
1-1 Difference between unpleasant sound and pleasant sound
1-2 Human auditory characteristics
2. Fundamentals of sound quality evaluation technology
2-1 Characteristics of various sound quality metrics and how to use them
2-2 Subjective evaluation and objective evaluation
3. Mechanisms of unpleasant sound
3-1 Harsh frequency components
3-2 Modulated sound・beat sound
4. Design methods for pleasant sound
4-1 Design guidelines for preferred sound
4-2 Frequency distribution design
4-3 Control of temporal variation
- 5. Integration with mechanical design
5-1 Compatibility with vibration countermeasures
5-2 Selection of materials and structures
6. Product case studies
6-1 Automotive sound design
6-2 Home appliance sound design
6-3 Common patterns of successful improvements
6-4 Common incorrect countermeasures
Key Outcomes of This Seminar
- Ability to logically identify causes of unpleasant sound and design appropriate countermeasures.
- Ability to apply integrated vibration/structural and sound quality design for practical pleasant-sound engineering.
Prerequisites
- This seminar is intended for those with basic knowledge of noise and vibration engineering, but key points are explained so that beginners can also understand.
Bonus: Support via Email or Zoom
- Free Q&A support regarding this seminar content (for 15 days starting from the day after completion)
- Free technical consulting for vibration-related work issues (for 15 days starting from the day after completion)
Schedule and Viewing Period
- Held year-round (on-demand seminar)
- You can watch for 3 days at your chosen timing.
After application, please enter your preferred viewing dates (3 consecutive days, weekends and holidays allowed) in the form field: “Please enter inquiries, messages, or confirmations to Aitop Co., Ltd. here.”
We will try to accommodate your preferred schedule as much as possible, but availability will be confirmed later.
Recording Year & Duration
- 2026 fiscal year approx. 5 hours
Tuition Fee
- Campaign fee: 28,000 yen (all inclusive / about half the cost of typical technical seminars. Price may change without notice due to full renewal of our website)
Seminar FAQ & Privacy Policy
List of Participating Companies & Participant Feedback
Instructor
| Title & Name |
Aitop Co., Ltd. Chief Technical Consultant
Certified Noise Control Engineering Specialist (Japan Noise Control Engineering Society)
Technical Development Award, Acoustical Society of Japan
Former Adjunct Lecturer, Nagoya University Graduate School (lectured in English to international students: 2021–2024)
Hideo Kobayashi
|
| Specialty |
Theoretical and applied technologies in vibration and noise engineering using AI and related fields, and their practical implementation |
| Experience |
With over 30 years of practical experience as a technical consultant and seminar instructor, he has served as a lecturer for industrial technology centers across Japan and seminars organized by Nikkan Kogyo Shimbun for many years. |
* The above seminar program may be subject to change due to circumstances.