Vassilii Khachaturov writes:

> Sorry I haven't gotten to mention this before,
> since this is smth that I kept noticing for months already.
> In the c172 aircraft, the ambient noise in the cockpit
> is pretty similar to what one hears w/o any headset.
> When one turns the radio on and tries to hear the ATIS,
> it sounds pretty low volume.
> 

Hi Vassilii,

Which C172 are you commenting on?  For the default 3d version I've turned the 
cockpit engine noise down to allow the ATIS to be more audiable as though 
headsets are worn - you can hear the difference when using the 'v' key to 
switch to outside view and back.  I haven't done this for the 2d panel c172 
though yet, but probably will if there are no objections.  However, I don't 
know what the inside of a light aircraft cockpit should sound like, unlike 
yourself!

> In real life, you can either put the radio on the loudspeaker
> (overhead), or put on the headset and have the radio in it.
> In the former case, I believe the volume is higher than this
> produced by fgfs. In the latter, I believe the radio volume
> is just about right, yet the ambient noise is much less because
> it is reduced by the headsets.
> 
> For a quick fix, I suggest just increasing the relative volume of
> the nav/comm radios vs the ambient noise.
> 

Unfortunately, the original recording of the ATIS was done at too low an input 
volume (I'm not really a sound guy, and the microphone used was very cheap and 
nasty) and attempting to up the volume seems to crank up the hiss a lot.  I'd 
like to make a better original recording one day.

> (For full emulation, one could emulate donning headsets w/
> different noise reduction/active noise cancelling frequency-based
> charachteristics, but this is pretty much an overkill, esp.
> since we don't even have a volume control on the comm radios).
> 
> FYI: I'm talking about 0.9.8 on Debian Linux 2.6.8-2,
> ALSA snd_intel8x0 sound. I'm building a CVS version right now,
> and will post if that behaves any differently.
> 

One thing that was apparent originally was that the relative ATIS volume 
compared to the engine noise was a lot louder on Windows than on Linux.  At the 
time I made the recording I was running FG on Windows only, and set the volume 
for that platform.  On some Linux installations (David Megginson and others 
reported it) it was apparently virtually inaudiable.  I'm not sure what the 
relative state of play on this is at the moment, since I haven't run FG on 
Windows for a while now.

Cheers - Dave

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