Physics in music

Presentation on how physics is involved in music. Some slides are copy-pasted from other users if anyone has a problem plz contact me.

1. PHYSICS IN MUSIC Name

2. “Music is a form of physics when y ou are listening to music you are actually enjoying different frequencies of sound.”

3. The creation of sound The two most common mediums that sound is created in is a hollow s ound container , such as in a flute or a drum. The other medium is a string, such as on a guitar.

4. Sound Waves Sound waves are always longitudinal waves. In solids, sound can be in the form of transverse or longitudinal waves The easiest way to view sound though, is as transverse waves. Transverse waves represent the fluctuation of air pressure back and fourth.

5. Longitudinal W ave Sound waves are not transverse instead they are longitudinal waves. If sound waves are moving south , the disturbance that they are creating is making the air molecules vibrate north and south.

6. How human ear works?

7. Beats When two (or more) sounds are present having a frequency difference of less than about 20 or 30 Hz, you will hear "beats." The frequency of the beats will be at the difference frequency. If the frequency difference is larger than about 20 or 30 Hz, a tone is usually perceived rather than distinct beats. For complex sounds, beats can arise from any of the partials of the sounds.

8. Sound Quality PITCH : It describes how low or high a note sounds - determined by the sound wave’s freqency - instruments each have a varying range of pitches they can create

9. Waves & Musical instruments When the wave hits something, it can bounce (reflection) or be bent (refraction). In Fact , you can “trap” waves by making them bounce back and forth between two or more surfaces. Musical instruments take advantage of this; every musical instrument is in some way a trap for sound waves .

10. Amplitude

11. Musical Instruments Vibrating stings produce musical tones in string instruments. Strings can be plucked, bowed, strummed or hammered. Length of the string determines pitch

12. Percussion Instruments A tightly stretched membrane produces sound vibrations. Instruments are struck(with hand, hammer, mallet etc.) shaken, brushed, rubbed or scraped. The size and tightness of the drum head determines pitch. A resonating air chamber amplifies the sound Drum sound production

13. Brass & Woodwinds A vibrating column of air produces musical tones. Lips, thin wooden reeds create vibrations at the mouthpiece Length of the resonating air column determines pitch Flared end of tube increases amplitude.