Loadsci846

May 17, 2012 So either the ECM8000 is a diffuse field mic, comes with calibration files to simulate either types, or it should be pointing towards the speaker (if it´s a free field mic that measures flat at 0 deg incidence). Since it´s a small capsule mic it won’t matter much except in the highest frequency range so don´t lose any hair over this. If the result isn’t close enough to the reference, adjust the numbers in the calibration file, re-load the calibration file, and run another sweep to check. The figure below shows the measurements from doing this, where red is the reference mic, orange is the target mic without calibration, and blue is the target mic after calibration. Connecting a Behringer pre amp and ECM8000 microphone to use REW is similar to connecting an SPL meter since the output for both is a line-level signal that feeds the right channel of the line-in of the soundcard. In the case of the preamp you have convenient adjustment of the line level signal.

• Behringer Ecm8000 Calibration File Rewrite
• Ecm8000 Cal File

Measurement Microphone Recommendations

USB Microphone Recommendations

For convenience and ease-of-use, a USB-connected measurement microphone can't be beat. Many of these mics come with a calibration file that ensures proper frequency response for measurement purposes.

The UMIK-1 is a 'Plug & Play' omni-directional USB microphone designed for acoustic measurement. This microphone provides low noise and accurate results you can rely on. Forget about driver installation, OS compatibility and un-calibrated mics. The Umik-1 is a USB Audio class 1 device automatically recognized by the Mac Operating System. After purchase, you can download a calibration file specifically for your UMIK-1 ensuring an accurate measurement.

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Analog Microphone Recommendations

Many analog microphones are useable with iRC Measure. Most all measurement - worthy analog mics require a pre-amp with phantom power and a female XLR (from pre-amp) to male 3.5 mm stereo adaptor (to your Mac line input) to operate. Contact your mic's manufacturer to find out if your mic is suitable for measurement use.

The CEntrance MicPort Pro is an easy way to incorporate your analog mic into the digital realm. Simple plug-and-play integration with your Mac, studio-quality specs, phantom power for condenser mics and appropriate sample rate support, this pre-amp is perfect for use with with iRC measure.

XTZ Audio has a cost-efficient USB-connected microphone kit that includes a the calibrated mic, USB pre-amplifier, cables, clip, and storage case.

Download the XTZ Mic Pro Calibration File
Note: the XTZ will work with both Dirac Live and iRC Measure.

Behringer Ecm8000 Calibration File Rewrite

If you already have a microphone pre-amplifier, we recommend the Behringer ECM8000.

Click here for ECM 8000 Information
Click here to download the ECM 8000 Calibration File
Note: the XTZ will work with both Dirac Live and iRC Measure.

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Ecm8000 Cal File