O R G A N I S E YO U R I D E AS S O U N D I t s p ro p e r t i e s a re … Th e y ' re s h o w n w i t h … Intensity It distinguishes between loud and quiet sounds. Dynamic indicators: p p p m p m f f f f d i m . c re s c . Pitch It distinguishes between high and low sounds. Musical notes on the stave and the treble clef: S O U N D WAV E S An object vibrates. The waves travel through the air, water or another medium, and reach our hearing organs. Regular and organised and they feel pleasant . This type of waves are called sound. Irregular and disorganised and they feel unpleasant . This type of waves are called noise. Th e y ' re p ro d u ce d w h e n … Th e y ' re d i f f e re n t d e p e n d i n g o n … Th e y ' re m e a s u re d i n … Th e y c a n b e … An excess of sound and noise in our surroundings is called noise pollution and can be ver y dangerous for our health. The result of all the sounds in a space at a given moment is called soundscape. Their f requency, which determines the pitch of the sound (faster in high sounds and slower in low sounds). Hert z (Hz). Their amplitude, which determines the intensity of the sound (larger in loud sounds and smaller in quiet sounds). Decibels (dB). Their duration. Seconds (s). & œ œ œ œ œ œ œ œ It distinguishes between long and short sounds. Duration Note values and their rests: h q e x Timbre It identif ies what we hear. The name of the instrument or type of voice. 23
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