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Topic: Constant subsonic rumble in Arny's 3rd sample (Read 2823 times) previous topic - next topic
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Constant subsonic rumble in Arny's 3rd sample

Here's the spectral plot of the constant subsonic rumble in the third excerpt Arny has posted from the last second where the main music has faded away. it shows here as being 50 dB down, or so, but compared to the actual music content of this short sample it is only 30 dB down from the average peak levels, by my eye, hence rather loud.

Constant subsonic rumble in Arny's 3rd sample

Reply #1 –
Quote from: mzil on
Here's the spectral plot of the constant subsonic rumble in the third excerpt Arny has posted from the last second where the main music has faded away. it shows here as being 50 dB down, or so, but compared to the actual music content of this short sample it is only 30 dB down from the average peak levels, by my eye, hence rather loud.


More detailed examination shows that it builds  up for the first second of the segment or so, and then holds on strong to the end.  HVAC, no doubt.

Constant subsonic rumble in Arny's 3rd sample

Reply #2 –
That's the natural rumble you get when recording in a church. It's mostly low frequency noise, seldom disturbing with classical music.
It's the small price to pay for a nice, natural reverb.

ps:
Quote
Recording date: October 2007
Location:          Jar Church, Oslo, Norway
 

Constant subsonic rumble in Arny's 3rd sample

Reply #3 –
It can be a natural air movement, not specific to any particular venue. Many mics easily pick it up, preamps can handle it too.