Acoustical

Why do Flex’ products absorb low frequency sound?

A short low frequency reverberation time is what makes a venue great for amplified music. This is a scientifically proven fact. But for classical music a longer RT is needed – also at bass frequencies….

The aQflex and aQtube sound absorbers have three very important acoustical advantages to other types of variable or mobile sound absorption:

  • They absorb  evenly the fundamental frequency sound produced by musical instruments: 63-1k Hz
  • They do not absorb high frequency sound leaving the orchestra capable of expressing dynamics easier
  • They do not absorb sound when inactive

It is a well known fact that different styles of music need different acoustics to sound good. A rock concert in a hall for symphonic music lacks definition even very close to the loudspeakers. A chamber or symphonic music ensemble sounds harsh and lacks liveliness and fullness in a dedicated rock venue. Both cases lead to an unsatisfactory experience for audience and musicians alike.

It’s not bizarre; The Beatles would probably not have come up with their music had they composed and rehearsed it in St. Pauls Cathedral. Neither would Bach have composed his organ music seated at an organ in Leipzig Park rather than inside the church.

It is obvious that halls which present various types of music should be able to alter the acoustics accordingly and it’s the reason why acoustic consultants have employed variable acoustics systems for half a century.

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In some halls it may be advantageous to adjust the acoustics to whether there is an audience or not. This is easily done with retractable drapes, banners, curtains since these have a very similar absorption curve at various frequencies as an audience: they usually absorb little bass and lots of high frequencies. This is an ideal solution also for music education institutions.