This seminar systematically explains acoustic intensity and acoustic camera technologies, which visualize sound source locations and energy flow that cannot be captured by sound level meters.
It clarifies the essential differences between sound pressure and acoustic intensity, measurement principles, application conditions, and correct interpretation of displayed values.
Furthermore, it strengthens practical problem-solving ability through comparison and proper usage of both methods, as well as noise source identification using contribution analysis.
Practical applications in factories and product development are also covered.
Do you face these challenges?
- You know the noise level (dB), but cannot identify which component is the cause
- Even when sound level readings are acceptable, complaints or discomfort still occur
- Measurement results change depending on microphone position, making evaluation unstable
- CAE results do not match actual noise, so you want to consider other methods
- You use acoustic cameras but are unsure about the reliability or interpretation of results
Target Participants
- Engineers involved in noise design and reduction for machinery, equipment, and vehicles
- Engineers responsible for vibration/noise measurement and troubleshooting analysis
- Engineers using acoustic cameras and measurement devices for evaluation work
- Design and analysis engineers facing gaps between CAE (coupled vibration-acoustic analysis) and real-world noise
- Development engineers requiring noise source identification and contribution analysis
Seminar Overview
This seminar provides a systematic, practical explanation of acoustic intensity and acoustic camera technologies that visualize sound sources and energy flow that cannot be captured by sound level meters.
It goes beyond basic measurement principles and organizes correct interpretation, measurement limitations, and practical usage.
It also explains contribution analysis methods for noise source identification and design improvement applications.
・ Understanding the physical meaning and necessity of acoustic intensity
・ Methods to capture invisible information (sound source and energy flow)
・ Principles of acoustic cameras and correct interpretation of displayed data
・ Roles and usage differences between acoustic intensity and acoustic cameras
・ Noise source identification and design improvement using contribution analysis
Seminar Program
- 1. Necessity and basic concept of acoustic intensity
1-1. Why acoustic intensity measurement is needed
1-2. What cannot be seen with sound pressure level
2. Difference between sound level meters and acoustic intensity measurement
2-1 Sound pressure (scalar) and acoustic intensity (vector)
2-2 Why the same dB means different things
3. Measurement characteristics of acoustic intensity
3-1 Does measurement position affect results?
3-2 Conditions in factories and real machines
4. Information obtained from acoustic intensity
4-1 Identification of sound source location and radiation direction
4-2 Evaluation of acoustic power
4-3 Visualization of energy flow
- 5. Principle of acoustic intensity measurement device
5-1 Basic principle of two-microphone probe method
5-2 Measurement errors and limitations
6. Principle and structure of acoustic cameras
6-1 Microphone array and beamforming
6-2 Sound field imaging processing
7. Display values and limitations of acoustic cameras
7-1 dB display is not absolute sound pressure level
7-2 Difference between free field and factory environments
7-3 Notes on interpretation of visualized data
8. Comparison and usage of acoustic intensity and acoustic camera
8-1 Role of acoustic intensity
8-2 Role of acoustic camera
8-3 Criteria for selection
8-4 Complementary use
9. Contribution evaluation methods
9-1 What is contribution?
9-2 Contribution evaluation using acoustic intensity
9-3 Estimation from acoustic camera data
9-4 Noise source separation and dominant source identification
10. What can be seen with acoustic cameras
10-1 Spatial distribution of noise sources
10-2 Distinguishing structure-borne and airborne sound
10-3 Interpretation of visualization results in real machines
11. Application to factories and product development
11-1 Noise troubleshooting process
11-2 Feedback to design improvement
11-3 Integrated use of CAE, measurement, and visualization
12. Q&A
Main Outcomes
- You will be able to quantitatively identify noise sources and transmission paths, enabling design improvements based on root causes.
- You will correctly interpret and differentiate acoustic intensity and acoustic camera results, improving noise analysis accuracy.
Required Background Knowledge
- This seminar assumes basic knowledge of noise engineering, but explanations are provided so that beginners can understand the key points.
Bonus: Email or Zoom Support
- Free Q&A support regarding seminar content (for 15 days starting the
day after completion)
- Free technical consulting for vibration-related work issues (for 15 days starting the day after completion)
Schedule / Access Period
- Available year-round (on-demand seminar)
- You can watch for 3 days at your preferred time.
After application, please enter your desired viewing period (3 consecutive days, including weekends/holidays) in the designated form field.
We will try to accommodate your request, but confirmation will be provided later.
Recording Year & Duration
- 2026 edition, approx. 5 hours
Fee
- Campaign fee: 28,000 yen (all included / approx. half the price of typical technical seminars. Subject to change without notice due to website renewal campaign)
List of Participating Companies & Feedback
Instructor
| Title & Name |
Aitop Co., Ltd. Chief Technical Consultant
Certified Engineer, Japan Society for Noise Control Engineering
Technical Development Award, Acoustical Society of Japan
Former part-time lecturer, 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, and related practical engineering fields |
| Experience |
Over 30 years of practical experience as a technical consultant and seminar lecturer, with extensive achievements in industrial technology centers across Japan and seminars hosted by Nikkan Kogyo Shimbun. |
*The above seminar program may be subject to minor changes due to circumstances.