Page 91 - KEC Khaitan C8.1 Flipbook
P. 91

Sound  travels in  waves caused  by  vibrating  objects.  These  vibrations  move  through  various
                 mediums (air, liquids, solids).



























                 CHARACTERISTICS OF SOUND

                 All sounds can be described by four key characteristics:


                 1. Pitch
                 Pitch describes how high or low a sound seems, depending on the

                 frequency  of the sound  wave.  Higher frequency  means  a higher
                 pitch.


                 2. Duration
                 Duration describes how long a sound lasts, from a quick clap to the sustained sound of a musical
                 instrument.





















                                            Visualizing Sound: Transient vs. Continuous Waveforms

                 3. Intensity (Loudness)

                 Intensity is how loud or soft a sound is, determined by the amplitude of the wave. Loudness is
                 measured in decibels (dB).



                                                                                              Introduction to Sound  89
   86   87   88   89   90   91   92   93   94   95   96