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In the Forum: Playback Listening
In the Thread: Basic guide to advanced audio
Post Subject: Tweeters and the size of the audio windowPosted by haralanov on: 7/29/2011
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I have witnessed how a person who mostly listen music at first listening
level, suddenly starts to talk not about sound, but about performer’s playing
techniques when listened to a system with properly integrated HFs. That’s why I
exaggerated their meaning. There is a catch when I’m saying properly integrated
HFs. It is not so difficult to make an acoustic system where the output of the
tweeter is mixed up with the sound of the other channels, but I personally look
for different kind of integration – an integration that does not deform the
sound field geometry and size. It is much difficult to achieve than just
perfect sound integration. Before I describe the specific aspects, I will illustrate
a simple example when that kind of integration is not present. Everybody could
try it with his own system in order to understand if he has that kind of special
sound recreation. It's simple: just switch off one of the channels of your acoustic system
(left or right). In most cases the sound collapses very badly – the entire
atmosphere is gone and there remains just one small and tiny sounding sound
spot. It happens in nearly 100% of the
cases, despite the perfect integration of the tweeter output. The sound field
is severely deformed and shrunk down to the size of the midrange driver. You
hear the sounds are emitted by a loudspeaker in front of you from a single
point.
If the HF driver is integrated really properly and IF your midrange
channel is not crap, then the sound field should not collapse – you must be
able to feel the authentic atmosphere of the recording without any deficiency –
it happens when you have an audio window with almost unlimited size in order to
be able to jump directly inside the recording. Otherwise you hear the music
information, but you don’t have the feeling it is something that is able to
involve you emotionally – it rather sounds like a paraphrase of the
musical event, or, if the system is more advanced – like a memory of the musical
event. Just a simple illustration:
Best regards,
Haralanov
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