Type 3654 is a two-microphone probe kit for measuring sound intensity. Designed for use with Hand-held Sound Intensity System Type 2270, the probe kit includes the ½” Sound Intensity Microphone Pair Type 4197 for 1/3-octave centre frequency measurements between 20 Hz and 6.3 kHz. Extending the upper 1/3-octave centre frequency to 10 kHz can be achieved using pressure correction.
- Sound intensity measurements using two-microphone technique in accordance with IEC 1043 Class 1
- Sound power measurements in accordance with ISO 9614-1, ISO 9614-2, ECMA 160 and ANSI S 12-12
Used with ½” Microphone pair Type 4197, the probe complies with IEC 1043 Class 1. These ½” microphones feature patented phase-corrector units making precision low-frequency phase matching practical, leading to increased measurement range and accuracy.