I need a program to measure the ultrasound frequency. Can you help?
There are many programs that can measure the ultrasound frequency, but personally I recommend you use Ultrasound Doppler software by PHYWE. It is compatible with Windows XP, Windows Vista and Windows 7 on both 32 and 64-bit architecture and you can test it free of charge. Also, you can try SAM PuttLab, SDT270 Data Dump, or SonarPM.