Signal Processing Concepts and Engineering Insights.
Explore signal processing concepts, algorithm comparisons, and practical engineering insights.
Topics include FFT vs STFT, FRF analysis, filtering techniques, and other signal processing methods used in real engineering workflows.
What Are A-Weighting, B-Weighting, C-Weighting?
When measuring sound, we don’t just measure physical pressure. However, from an engineering perspective, linear scale measurements are also commonly used, so weighting is not always necessary during measurement.
We also want to reflect how humans actually hear sound.
However, human hearing is
Frequency Weighting Curves
The most common ones are
All weightings are normalized to 0 dB at 1 kHz
Why Weighting Is Needed
If we measure raw sound
Weighting adjusts measurements to match perceived loudness
A-Weighting
Features
Usage
Behavior
B-Weighting
Features
C-Weighting
Features
Usage
Comparison Summary
When Should You Use Each?
Key Takeaways
Weighting = Perception correction
Conclusion
A-, B-, and C-weighting curves bridge the gap between
Suggested Further Reading
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