Falcon, you might need to find out about the sound gauge of Douglas Dawson. Simply disabling the thing in the panel.cfg will disable all the sounds it plays. In some .ini file, the filepaths and filenames are defined.
It's very interesting that the developer used this gauge as main sound drive. I wonder what his arguments were.
Hello !
I am Jean Michel, the author of the sounds of the Alouette III. I'm going to try to explain you my choice of the DSD gauge to manage sounds engine.
We wanted to restore, at best, all the systems of the real Alouette III. The started of the engine until its speed of functioning is rather long (approximately 90 seconds) and in two distinct phases: 0-18000 rpm, first, and 18000-33500 rpm, after the opening of the fuel flow lever. The engine stays at the idle power if the lever is not activated.
The other difficulty was to reproduce the procedure: "stop the rotor keeping the engine on" (chapter 3 of the starting procedure, page 11).
Difficult to reproduce this 2 procedure without the DSD gauge !
Furthermore, the constant engine speed during flight played by the DSD gauge would not have been different via the sound.cfg, That's why I managed the majority of sounds by the DSD gauge.
I also wanted to speak about "the problem" of the turbine whine. the Alouette III is a very noisy helicopter.
I invite you to view these two videos:
https://www.youtube.com/watch?v=BSdB_fP2jR8
https://www.youtube.com/watch?v=hBUXVA37JUU
I understand that it is not very pleasant during a long flight... but it's realistic !
Jean Michel from the fsx Alouette III team.
PS: I hope that my English will not be too bad