James Sleeman wrote
Hi Maik,
Maik Justus wrote:
the effect you are discussing is not the Doppler effect, but just the
Yes, I know it's not a function of the Doppler itself, but I was
thinking more along the lines of the volume drop off, if it were better,
might help the
Hello,
James Sleeman schrieb am 22.01.2009 01:14:
Hi Maik,
...
Just to clarify on the reference-dist, is it that this value is a
diminishing effect, that is for reference-dist of 1 after distance 1 the
volume is half original, after distance 2 the volume is 1/4 original
(half of a half),
Hi,
Maik Justus schrieb am 22.01.2009 13:45:
Hello,
James Sleeman schrieb am 22.01.2009 01:14:
Hi Maik,
...
Just to clarify on the reference-dist, is it that this value is a
diminishing effect, that is for reference-dist of 1 after distance 1
the volume is half original, after distance 2
Hi Vivian,
Vivian Meazza schrieb am 22.01.2009 11:17:
I would think that the attenuation of sound in air is amenable to
mathematical calculation.
Yes it is. (at lest if your distance to the sound source is large
compared to the size of the source).
Surely we shouldn't be guessing at some
* Maik Justus -- Thursday 22 January 2009:
Vivian Meazza schrieb am 22.01.2009 11:17:
I would think that the attenuation of sound in air is
amenable to mathematical calculation.
Yes it is.
But it depends on the frequency pattern, no? So we'd need to
analyze the spectrum ... time to use
Melchior FRANZ
Subject: Re: [Flightgear-devel] doppler volume
* Maik Justus -- Thursday 22 January 2009:
Vivian Meazza schrieb am 22.01.2009 11:17:
I would think that the attenuation of sound in air is
amenable to mathematical calculation.
Yes it is.
But it depends
* Vivian Meazza -- Thursday 22 January 2009:
Melchior FRANZ
I don't see any particular merit is setting the value in preferences.xml,
but it would be nice if the default values worked as designed, no matter
where they are set.
It's always nice to have default values changeable, rather than
The doppler effect (which I currently have working through the
USE_SOFTWARE_DOPPLER define) has never sounded very real to my ear.
Recently I've wondered if it might be to do with the volume dropoff
not being enough.
It's hard to subjectively quantify the dropoff in the flyby, but for
Hi James,
the effect you are discussing is not the Doppler effect, but just the
volume as a function of the distance. Every aircraft has its own sound
definition including the distance, where the volume is halved
(reference-dist) and the distance where the volume is cutted off
(max-dist). The
Hi Maik,
Maik Justus wrote:
the effect you are discussing is not the Doppler effect, but just the
Yes, I know it's not a function of the Doppler itself, but I was
thinking more along the lines of the volume drop off, if it were better,
might help the convincingness of the Doppler, if you
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