A real-time analyzer (RTA) that can display the sound level as a spectrum using FFT. Compatible with native Windows audio input devices only. Includes a SPL meter section with selectable weighting (A, C, Z, or raw peak full scale). Selectable response integration times of Fast=125ms or Slow=1s. Microphone frequency response calibration text files can be imported (Hz, dB). Adjustable offset to achieve 94dBSPL @ 1kHz using a sound level calibrator. On-the-fly IFFT FIR filter creation to achieve compensated SPL readings over frequencies. Optional logging of various statistics to a text file in 1-second intervals: PkFastA, PkSlowA, Avg1sA, Avg3sA, Avg10sA, LAeq1, LAeq10, LAeq15, PkFastC, PkSlowC, Avg1sC, Avg3sC, Avg10sC, LCeq1, LCeq10, LCeq15, PkdBFS, NIOSH%, OSHA% NOTE: The SPL display reading is not calibrated out-of-the-box. It is dependent upon adjusting both the SPL offset entry and the OS input level correctly.
Utilities · Windows · Free
