Level and Delay for Mixing Files

I have produced different WAV files by the Lake convolver for further processing with the Ears WAV Mixer. How can I get their proper SPL and delay values?

The Lake convolver is designed for real-time listening. For manipulation of convolved signals we recommend the use of the EARS convolver. It automatically produces WAV files with proper level and delay information.

Changing Wall Material for Multiple Faces

How can I quickly switch between materials for a group of Faces? Individually re-assigning each Face to another absorption spectrum is of course one way to go. But switching each Face to a second alternate material is very slow. Is there a better way?

Yes, there is. The easiest way is to define an Object containing all these Faces. After that you can go to the Object's properties sheet and set the Wall Material of all Faces with a single click.
Of course you can also use the method described below.

Delete Items after combining Projects

I built two models in EASE 4.0 and used the command: "Combine Project". It combined the projects, but I can no longer delete items in the project because it says that they are appended to the old file. What does that mean and how can I solve it?

EASE 4.0: This message usually occurs if items to be deleted are still referenced to from within an object. It can be one of the following:

Coverage Cones not showing

My problem is in painting the conic 3-6-9 dB loudspeaker coverage patterns on the seating area. I get the magenta line indicating the aiming angle, but I am not able to turn on the patterns even though the program says the beam patterns are on.

If the Options are shoing 3,6,9 dB Cones ON and the magenta line is visible, check also the currently used frequency under Options, maybe the current band is not valid. Otherwise you should also check if there are really cones with values different from 0° and 180° using the Speakerbase.

Deleting many Listener Seats

When you overpopulate a room with too many listener's seats, is there a way you can globally delete all seats in one easy command?

Go to the Listener Seat Tables (Ctrl+Shift+S) and select the seats you want to delete by dragging the mouse down the left most column. Then go to Edit/Delete Listener Seats. This would waste all the selected seats.
Of course this would work for other items, too.

Ahnert Feistel Media Group

Located in Berlin, Germany, AFMG® Technologies GmbH has created the industry standards EASE and EASERA software for acoustic simulation and measurement as well as their related products EASE Focus, AFMG SysTune, EASE Address and EASE SpeakerLab.

In cooperation with our partner company SDA Software Design Ahnert GmbH we develop and distribute software for:

Electro-acoustic and
room-acoustic modeling
Electronic and acoustic
Applications in
engineering and physics
RF and infrared

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