| Abstrakt: |
Measurements will be presented on some primitive musical instruments that produce sound from excitations of a Helmholtz resonator. Input acoustical response measurements will be compared with the sound output when the instruments are blown. In some instruments, pitch can be altered by changing finger position, but others have constant pitch. The complicated pigeon whistle which is attached to the legs of pigeons will be described. This lightweight whistle contains a large Helmholtz resonator and several quarter wave pipes, and is excited in flight by air streaming across sharp lips on each of the parts. [ABSTRACT FROM AUTHOR] |
