Expanding Your Horizons: Physics of Music Hints

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Presentation transcript:

Expanding Your Horizons: Physics of Music Hints

What does sound “look” like? Tone generator Oscilloscope Microphone Speaker

Oscilloscope controls: play around! Helps to “freeze” the wave Changes horizontal scale Changes vertical scale

Tone generator: play around! Wave shape Frequency Changes frequency Amplitude

What do sounds from these “look” like?

What does sound “look” like: Computer and LoggerPro software Click “Collect” to capture data Click “Examine” to determine frequency Spectrum: tells what frequencies present in the sound Cursor

When do two pitches sound “pleasing” together? Find this program on computer desktop. Listen through headphones Click with mouse, drag to turn and change ratio

Frets: Click below to hear the Superman theme Frets: Click below to hear the Superman theme. Try playing the first few notes on the monochord.

Frets: Where is “fa”? L/s=4/3 2:1 3:2 1:1 s 4:3 L/s=4/3 Find s and tape a nail in the correct place to act as a fret. Play something.

Can you make an instrument out of a straw? Flatten, then blow on this end. Add length as desired, and add a cone to the end.

Can you make an instrument out of a straw? Sound level appears here in decibels (dB)