· shutter to secure various areas of opening. When the opening is completely closed, the...
6
· shutter to secure various areas of opening. When the opening is completely closed, the microphone operates as a non-directional pressure microphone; at the wide-open position
![New fast-opening, large-aperture shutter for high-speed ... · erence [4] describes a shutter which opens and closes a 1.6 mm slit in about 15 jlsec. References [5] and [6] are closing](https://img.pdfslide.us/doc/110x75/5fc1ad5857697417f8297b67/new-fast-opening-large-aperture-shutter-for-high-speed-erence-4-describes.jpg)
