Audio Video Recording And Editing 4(1+3)

Lesson 01: Understanding the utility of Sound Recording

The Properties Of Sound

We have already learnt in our high school physics that sound travels in the
form of waves.
All types of sound have the following properties:

• Wavelength
• Amplitude
• Frequency

Wavelength can be described as the distance between any point on the wave and a corresponding point on the next wave; .

Amplitudeindicates the height of a sound wave, shown in Fig. 7.1(b)-how loud the sound is. The higher the 'height' of the wave, the louder it is. Amplitude also indicates how strong a sound is.

Frequency is the number of times the wavelength occurs in 1 second. If the sound source vibrates faster, the frequency is higher, and vice versa;. For example, if you examine the wave of the strums of