any recommend of C80 value? |
Posted: Tue Dec 05, 2017 6:11 pm |
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ah82318 |
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Joined: 22 Nov 2017 |
Posts: 9 |
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| Hi: I have a project of small live house acoustic performance, the music type of bands play in the live house was rock, punk, post rock, pop...etc.
I want to know the suitable C80 value for the rock music. In EASE tutorial, the recommend value was6+/-2dB, but I didn't see the value come from which reference.
any reference for recommend the value which was suitable of rock music? ![Very Happy](images/smiles/icon_biggrin.gif) |
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Posted: Tue Dec 05, 2017 8:15 pm |
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Alexis |
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Joined: 12 May 2009 |
Posts: 9 |
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| Hi!
the original paper where this parameter is described is in german, but there must be a proper translation, anyway here is the name:
[Abdel Alim, O.:Abhängigkeit der Zeit- und Registerdurchsichtigkeit von raumakustischen Parametern bei Musikdarbietungen (Dependence of time and register definition of room acoustical parameters with music performances) Dissertation, TU Dresden 1973
For what I know a good value for modern music should be over +6dB.
Best
Alexis
https://acusticaenespanol.blogspot.de/ |
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Posted: Tue Dec 05, 2017 11:51 pm |
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thomas |
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Joined: 16 Mar 2011 |
Posts: 73 |
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| Hi,
you can't find anything about rock, punk, post rock in the original paper, mentioned by alexis. But it is interesting to read anyway.
In the EASE Help I find: Quote: |
Appendix A: Acoustic Formulae > Room-acoustical Fundamentals for Auditoriums and Concert Halls (reprint of chapter 6.1 and 6.2 of AHNERT/TENNHARDT/6.0/) > 6.2 Room-acoustical Criteria used in AURA, Requirements > 6.2.2 Energy Criteria
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The value for a good clarity measure C80 depends strongly on the musical genre. For romantic music, a range of approximately
-3 dB <= C80 <= +4 dB
is regarded as being good, whereas classic and modern music will allow values up to + 6..8 dB.
According to Höhne and Schroth /6.14/, the perception limit of clarity measure differences is about ΔC80 ≈ ± 3,0 dB.
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I think the values of +4..+8 dB should be proven with the PA, not with a sphere (striktly speaking C80 is defined for a sphere) and for the 1kHz Octave (with a positive increase over the frequency, no decrease should occur at least).
Thomas |
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Posted: Wed Dec 06, 2017 11:53 am |
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Agustín Arias |
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Joined: 10 Apr 2013 |
Posts: 54 |
Location: Caseros, Buenos Aires, Argentina |
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| You should read the book "Rock and Pop Venues: Acoustic and Architectural Design" of Niels Werner Adelman-Larsen
Niels is an excellent reasercher and acoustician, I met him in the ICA 2016 in Buenos Aires. You can contac him via facebook for any questions you have |
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| _________________ Eng. Agustín Arias
Ottobre & Ottobre, Acoustical Consultants
Buenos Aires, Argentina
agustin.arias@outlook.com |
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