Appraisal Meaning in Hindi. There are total 2 hindi meaning and definitions have been listed for the english word 'appraisal'. Its first meaning is 'à¤à¤à¥à¤¨à¤¿-à¤ªà¤°à¥à¤à¥à¤·à¤¾' which can be transliterated into english as 'agni-pariksha'.
Confidence votes 7. The highness or lowness of a sound is determined by its frequency, measured in Hertz. (Hz) The lower a sound is, the more distance it can travel. A low sound is felt as well as heard. (Hence, the term Feel the Bass.) The higher a sound is, the less distance it can travel.
In other words, how loud things seem is a subjective thing and not something we can easily measure. However, what makes one sound seem louder than another is the amount of energy that the source of the sound is pumping towards the listener in the form of pressure variations in the air. That's the intensity of the sound and it's an objective thingâsomething we can easily measure and agree on. Meters that measure sound levels work by calculating the pressure of the sound waves traveling through the air from a source of noise. That's why you'll sometimes see them referred to as sound pressure level (SPL) meters.