Low Frequency Detector for Pc

1. - The sound measurement of the low frequency range is a level difference with respect to the reference signal (1kHz sine wave), which indicates the relative power level.

2. 1) Calibration (Calibrate): A reference signal (1kHz sine wave) is output to determine the reference noise level for the low frequency component.

3. - Low frequency power level measurement less than 100Hz (LF Level): Flat characteristic, Updating indication of measurement period 1 sec.

4. - Leq (dB): Sound power level with the frequency weight characteristic Z (Flat) of the audible band.

5. 2) Measurement (Measure) : Analyze a power level of low frequency sound.

6. By depending on its frequency component and sound level, it is different the degree of influence on the human body and the noise sensation.

7. - Low frequency (LF) Level (dB): Time course graph with peak level noise level judgment (RED-very noisy, YELLOW-noisy, GREEN-normal) at the peak level.

8. 3) Measurement display: It can select either 1/3 octave band frequency analysis, FFT analysis or Time course graph.

9. - Since iPhone's built-in microphone has a lower sensitivity on the very low frequency range, it is not recommended to measure a huge volume sound near a very loud noise source.

10. - Power level measurement in the audible band (Leq): Flat characteristic, Updating indication of measurement period 200ms.

11. - The reference signal is output during calibration and sound level measurement.

12. Liked Low Frequency Detector? here are 5 Utilities apps like Frequency Counter; Frequency Counter Pro; Audio Frequency Analyzer; Frequency Sound Generator;