Decibels allows a listener to measure the frequency and perceived loudness of any sound. The frequency or amount of air pressure change vibration is measured in Hertz.

Decibel vs Hertz
Decibel (dB) and Hertz (Hz) are two different units of measurement used in the field of sound and frequency. While they are related to each other, they serve different purposes and represent different aspects of sound.

Decibel (dB)
- Decibel is a unit used to measure the intensity or loudness of sound.
- It is a logarithmic scale that compares the intensity of a sound to a reference level.
- Decibel is commonly used to quantify noise levels, the volume of music or speech, and the power of sound systems.
- The human ear perceives sound logarithmically, which makes the decibel scale a more accurate representation of how we hear sound.

Hertz (Hz)
- Hertz is a unit used to measure frequency, which refers to the number of cycles per second in a sound wave.
- It is used to describe the pitch of a sound, with higher frequencies corresponding to higher pitches and lower frequencies corresponding to lower pitches.
- Hertz is commonly used in music and audio technology to tune instruments, adjust equalization settings, and analyze waveforms.
- The range of human hearing is typically between 20 Hz and 20,000 Hz, with the lower end representing bass frequencies and the higher end representing treble frequencies.
In summary, decibel measures the intensity of sound, while Hertz measures the frequency of sound. Both units are essential in understanding and working with sound and audio technology.