Supersonic

4. Converts sound energy into another form of energy
5. Produced by a vibrating object
6. A frequency shift that causes an object to have a higher pitch close to you, but a low pitch farther away
7. Unit of measurement for sound level
8. Studied sound production in musical instruments and the human voice in the 19th century
11. A resonating tube with both ends open to air
14. Pleasent set of pitches
16. An organtic detector that recives pressure waves and converts them to electrical impulses
17. A logarithmic scale that measures amplitudes
18. Each one of these has a unique frequence of vibration
19. An oscillation of wave amplitude

1. A resonating tube with one end closed to air
2. Depends primarily on the amplitude of the pressure wave
3. Unpleasant set of pitches
9. Consists of a thin disk that vibrates in response to sound waves and produces an electrical signal
10. Lowest frequency on an instrument
12. Higher frequencies on instruments
13. chords Two membranes located in the throat
15. A pressure variation that is transmitted through matter