What is dB?

What is dB?

Decibels (dB) are used in various fields such as electricity, communication, optics, sound, vibration and so on. Here, we summarize the basic definition of decibel (dB), significance of using it, its convenience, how it is used in various fields, and so on.

FFT Analyzer

FFT Analyzer

To understand the meaning of the data given by an FFT analyzer, it is necessary to understand the concept of Fourier series -- the fundamentals of FFT and its mathematical background.

Sound and Sensors

Sound and Sensors

When the sound is measured, in general, frequency response and the loudness of the sound are subjected. The frequency uses "Hz" for the measuring unit, as is generally known.

Damping materials and their performance measurement

Damping materials and their performance measurement

“Damping” is reducing the level of vibration on the surface of solid to convert vibration energy into thermal energy, while “vibration isolation” is equivalent to vibration isolation to reduce vibration transmission rate between vibration source and vibration receiving device.