You press harder on the bow and play closer to the bridge with a flatter bow (instead of with just some of the hair on the bow).
Keyboard and harpsota can
A piano is both a percussion instrument and a string instrument. Inside a piano, tiny hammers strike strings to make pitches. It is a string instrument in that the strings are what vibrate to make the sound, but it is a percussion instrument in that it has a keyboard and strikes to make sound.
Bassoon
An instrument with short strings will make a rubber band type sound but real high pitched.
If you press the hudhud instrument it'll make a low pitch sound but if you press it upward it will make a hudhud sound.
an instrument
You may be referring to the sound of a Shakuhachi.
If you put the bow near the bridge, the instrument will sound louder. If you put the bow far the bridge, it will sound softer.
Percussion - example - Drums: these instruments are struck with something such as the hand, or a stick or hammer to make the sound. Woodwind- Example - Clarinet: these instruments have a reed to vibrate to make the sound. Brass- example - Trumpet: these instruments make sound by the vibrating lips of the player. String - example - violin : these instruments have strings that rubbed with a bow or plucked to make a sound There are also electronic instruments such as the theremin and one might consider the human voice to be an instrument.
Electric Guitars,
voice
use an instrument called Kazoo..