DIRECT-READING ONE-PORT ACOUSTIC NETWORK ANALYZER

A novel measurement instrument is proposed to perform reflection measu rements of guided acoustic waves. Both the magnitude and the phase of the reflection coefficient are measured simultaneously. The compact co nstruction and the direct-readout feature facilitate an attractive mea surement alternative for traditional standing-wave-ratio (SWR) detecto rs with movable microphones. These advantages are decisive for infraso nic frequencies where traditional SWR detectors require setups of 10 m or more.