No. But the fact that a hall sounds
anechoic or nearly so does not mean it is!
To the extent that I could find out on line
in a quick search, it seems that the
reverb time was about 1.4 seconds. This
is much too short to sound satisfactory and
moreover the rise of RT in the bass was
not much--this is something that makes
a hall sound thin and cold(like Disney in LA--
there is a lot of reverb there, 2 sec time but
it is unifomr with respect to frequency--
the thing sounds like a bad audio system)
However, while this is surely too dry to be
a good hall, such a reverb time will still
lead to the reverberant sound field dominating
the total energy received. One just has to back up
a bit further before this happens--but it will
still happen at all but extremely close locations.
For a fixed volume, the critical distance(beyond which
reverb is more than half the sound) varies reciprocally with
the square root of the reverb time. If the hall had a
reverb time of 2.8 seconds(super wet) then the critical distance
would be changed only by a factor of 1.4. ALLL halls that
are not open to the out of doors have a critical distance that
is smaller than the distance to most audience locations.
A quick seat of the pants calculation for RFH (volume 11,600
cu m, rt 1.4) gives that the critical distane is around 5.5 meters.
Not that far! Beyond that distance, reverb field is more than direct
arrival.
Because of the precedence effect, the sound seems to come straight from
the players. But if is an illusion!
CF
www.regonaudio.com
"Records and Reality"
The relevance to the live versus speaker demo is that at distance,
the power response of the speaker dominates the scene--the specific
radiation pattern is not so important in detail. Which is why
the AR demos worked! (and presumably the Wharf. ones as well)
Robert
On Tue, 21 May 2013, David Pickett wrote:
At 12:16 21-05-13, Robert Greene wrote:
Even "dead" concert halls in the relative sense
have a lot of reverberation. A really dead hall
still has a 1 second reverberation time say
and most of what you hear in the audience is still
reverberant sound.
Did you ever hear an orchestra playing in the RFH pre 1960???
David
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