About

Mimigar is iOS application of realtime octave band analyzer.

  • Calibration
  • 1/1、1/3 octave band analysis
  • A/C/F frequency weighting
  • Fas/Slow time averaging
  • Auto recording

are the feature of Mimigar.

Full-functional RTA is in your pocket, please enjoy your acoustic measurement !

Quick manual

  • Start analyse with toggling START/STOP(6)
  • Watch result in graph area(1)
  • Switch 1/1 or 1/3oct. with (7)
  • Switch Fast/Slow/Instant with (8)
  • Switch A/C/F weighting with (9)
  • Watch whole powerlevel at (2)
  • Move cursor (5) and watch detailed level in (3)

Calibration(for advanced user)

If you need to measure with high accuracy, you should use calibration function.

  • Plug IEC standard microphone to iPhone/iPad
  • Radiate 1kHz sound to the microphone from calibrator
  • Adjust gain to 94dB in MicSettingView.

We have tested i436 microphone with this calibration function. The combination of i436 and CA114 seems to be popular in Japan.

Reference

MainView

1. Graph area

A power level of each band is shown. The x-axis is frequency in Hz, the y-axis is power level in dB.

2. Level Area

A power level of all band is shown. The weighting in frequency (A/C/F) is included.

3. CURSOR LEVEL AREA

Cursor position is shown in Hz, and its powerlevel is shown in dB.

4. DEVICE AREA

The microphone device name is shown.

5. Cursor

It is cursor.

6. Start/Stop

Start/stop analyse.

7. SWITCH OCTAVE BAND WIDTH

Swtich 1/1 or 1/3 oct.

8. SWITH TIME WEIGHTING

Switch Fast/Slow/Instant.

9. SWITCH FREQUENCY WEIGHTING

Switch A/C/F weighting.

10. CONFIG

Move to ConfigView.

ConfigView

1. RECORD SWITCH

If swithed on, the sound will be recored automatically in your analyse.

2. list

Move RecordListView.

3. MIC nAME

The name of currently used microphone.

4. CONFIG

Move to MicListView.

RecordListView

1. FILE LIST

Select recorded file with tap. The format of file name is Y–M–D–h–m_0dBFSD==NNNdBSPL.wav . The SPL value of maximum amplitude(0dBFSD) is saved as NNN, it enables us to file based analyze in PC. 

2. PLAYER

Play selected wav file.

3. Edit FILE name

Edit file name of selected.

MicListView

1.MIC LIST

The list of registered microphone is shown. The checked one is used for analyze.

2. ADD MIC

Add microphone to the list.

3. CALIBRATION

Move to MicSettingView.

MicSettingView

1. MIC NAME

The name of microphone is shown. It is editable, set it as you like.

2. SPL@1kHz

The SPL of 1kHz is shown.When you calibrate a microphone with piston calibrator, it must be 94dB or 104dB for popular calibrator.

3. MIC gain

Set internal gain of  iPhone/iPad.

  • for HIGH, you can analyze small sound, but loud sound is clipping easily
  • for LOW, you can avoid clipping with loud sound, but small sound is missed easily

MID is in the middle of above both.

Note: it depends on the generation of iPhone/iPad. Not guaranteed for all model.

4. GAIN CONTROL

Control software gain. When you calibrate a microphone, you must control gain with 94dB or 104dB in SPL@1kHz.