Binaural - plugin and AS 03 or AS 04 probe

This chapter describes the features and the interaction of the binaural plugin E02-2 and the in situ probes AS03 (in situ probe with tube) and AS04 (in situ probe with microphone)

If you use the old in situ probe (probe older than may 2011) please see chapter: Monaural - Plugin with old Probe (older than 05-2011).

General:

We developed a complete new concept for the in situ measurement to make your workflow easier and faster. For that reason we created a very easy-to-use in situ probe and a new working process of the measurement.

The probe is delivered with three different types of tubes. Depending on the anatomical needs you can choose from three different tube lengths:

1.) short tube (20mm)

2.) medium-length tube (25mm)

3.) long tube (30mm)

If these three lengths are not enough you have the possibility to use another tube of which you can determine the length.

The usage of a fix tube length has the advantage, that the physical frequency characteristic of each tube is saved in the algorithms of the software. That means you do not have to calibrate the tube every time you use it.

A manual calibration is still possible (see chapter Tube calibration). This is only necessary if you want to use a custom tube length.

Binaural working:

The perfect combination of the new in situ probe AS03 or AS04 is the new binaural plugin unit E02-2. The plguin unit will detect automatically which probe is connected to the device and if it works properly. Because it is possible to measure both sides in only one measurement, you can also calibrate the two probes at once.

But: in binaural operation only a quick-calibration is done. That means that you should do the extended calibration once before you start working with client's datas. This is done by choosing one side (left or right) and then calibrating only the right or left probe.

Calibration of the in situ probe AS 03 in monaural operation:

Step 1:

Remove the in situ tube from the probe.

Step 2:

Bring the in situ probe in calibration position.

For that place the probe in reference plane to the loudspeakers.

The loop must be in a 90° angle to the loudspeaker, so that both microphones have exactly the same distance to the loudspeakers.

The yellow line on the picture to the left shows the direction from where the calibration sound comes.

The calibration can now start. This is the usual calibration process (see also:Calibration - In situ).

During the calibration process, all needed datas and values are gathered and corrected, if necessary.

When the calibration has finished, click on the other side button (left if you first clicked right and vice versa) and start the calibration for the other side.

Calibration of the in situ probe AS 03 in binaural operation (button both sides is enabled):

Perform the steps described above, remove the tube und place the probes in calibration position.

In the Software click the button 'both sides' and start the calibration as described in chapter: Calibration - In situ. Now only one measurement will be performed whereby only the values of the microphone correction is tested. This calibration is sufficient for the most of the measurements. If you experience that the measured summation levels vary tremendously from the presetted values, you should perform a complete calibration.