FFT Analysis with SoundAdvisor Model 831C

Rent a Sound Level Meter with Single Channel FFT Analysis for Sound and Vibration

Fast Fourier Transform (FFT) can be incredibly useful in identifying key frequencies of a signal. Rent a Sound and Vibration FFT Analyzer which pairs the trusted Larson Davis SoundAdvisor™ Sound Level Meter with FFT Firmware. Ideal for machinery troubleshooting, tone detection, and noise source identification, the system offers benefits such as:

• Handheld, single-channel FFT measurements
• In-the-field tonal assessment and analysis
• Measurement of specific frequencies or tones in audio processing
• Support for Engineering Units
• Real-time data on the meter, mobile device, or PC
• Auto peak finding with harmonic cursors

831C-FFT Accessories

• ICP^® Cable Adaptor Model ADP074: Mates ICP single axis accelerometer to SoundAdvisor Sound Level Meter providing 4 mA ICP input on BNC connector
• Calibrators
  • Handheld and Portable Accelerometer Calibrators
  • Acoustic Calibrators
• Uniaxial Accelerometers
• Microphones (any 0 V polarized microphone is compatible)

To order, add 831C-FFT to any 831C Rental Kit.

Which Window to Choose for FFT Analysis?

A phenomenon known as leakage occurs when processing real-world signals, resulting in lower peak amplitudes and “smeared” frequency responses. Although leakage effects are commonly seen, the effects can be reduced with use of a “Window” function.

See Understanding FFT Windows for more information on why window functions are useful in FFT Analysis and which window to use for your application.