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Rehearsal spaces for symphony orchestras—Data collection

Introduction

We request data that could help us in testing suggested recommendations, e.g. recommended combinations of Volume and Reverb Times in rehearsal rooms for un-reinforced music.

The diagram below is an example from NS8178, being the work draft for a new ISO-standard for rehearsal rooms.

Do you have any such data and would you be willing to share it?

If so, do the following:

· Copy the table below

· Paste it into a new email

· Fill in data in the empty cells

· Send the email to msk@brekkestrand.no

If you prefer, you can paste the table into a blank excel sheet, fill in data and send it to the email address above.

All rows received will be compiled in a single table below.

In rooms with variable acoustics it is especially valuable to know the RT-range and which RT they prefer. Please use comment column.  

The more data, the better. The table may of course be extended with extra rows on demand.

If a room has been used and evaluated in different versions, i.e. with different combinations of RT, N, or even V, please use one row for each version.

As much as possible of the collected information will be included in the base for a paper to ISRA 2019. Each row, i.e. each pair of RT-V will represent one point plotted in a T-V diagram like the one below.

If you think of someone else who should receive this invitation, please return name and email address.

Thank you for your kind cooperation.

* symphony orchestra, here an orchestra consisting of at least strings, woodwind, brass and percussion groups, playing classical music, opera- and ballet-orchestras included.

** If the ID cannot be published please notify in Comment. If you must keep ID strictly anonymous, you could write YourSurname-#1, YourSurname-#2, etc. sufficient to make data traceable for peers in scientific manner.

*** Bass Ratio is (RT125+RT250)/(RT500+RT1000)

Rehearsal room ID**	Volume, V (m3)	RT, 500-1000Hz average, Tm(s)	Bass ratio*** BR (1)	Orchestra ID**	Number of musicians in symphony orchestra*, N [range]	Are musicians and conductor satisfied, dissatisfied, or what?	Comment

Table and T-V plot updated 12-07-2019

#	Rehearsal room ID**	Volume, V(m3)	RT, 500-1000Hz average, Tm(s)	Bass ratio*** BR (1)	Orchestra ID**	Number of musicians in symphony orchestra*, N [range]	Musicians and conductor satisfied, dissatisfied, or what?
1	Oslo Opera	5200	1,00		Opera Orchestra		yes
2	Danish Radio	6300	1,70		DR symph. Orch.		yes
3	Tapiola Hall	8000	2,00		Tapiola		yes
0	Rehearsal Room #1	4200	1,25		symp. Orch #1		yes
1	Kristiansand	3000	1,00		KSO	70	no
1	Kristiansand	3000	0,70		KSO	70	yes
1	Bergen	3000	1,40		BPO	90	no
4	Oslo, Lindemann	4500	1,7		NMH	70	yes
4	Oslo, Lindemann	4500	1,7		KORK	70	no
4	Oslo, Lindemann	4500	1,4		KORK	70	yes
4	Oslo, Aula	4150	1,90		misc	medium	yes
4	Oslo, NRK	3700	1,30		KORK	70	no
4	Oslo, NRK	3700	1,80		KORK	70	no
5	cph opera1	4400	1,30		cph opera orch.		yes
5	cph opera2	2300	0,80		cph opera orch.		no
5	Frichs	5000	1,4		resident so		no
5	Lumbye	4600	1,8		Tivoli symph.orch		no
5	Queens	4500	1,9		sinfonietta	40	yes
5,7	BBC Studio 1 Cardiff	3800	1,1		BBC Wales nat'l SO	90	no
5,7	BBC Hoddinott studios	8700	1,8		BBC Wales nat'l SO	90	yes
5	BBC studio 7 Manchester	8300	1,8		-	90	no
5	BBC Salford Quays	9700	1,8		-	90	yes
5	BBC Maida Vale	6200	1,5		BBC Symphony	90	no
5	Penderecki	7700	2,3		small symphony	50	yes
6	NedPhO Koepel	12000	1,9		Netherland Philharmonic Orchestra	90	yes
6	Grosse Sendesaal NDR Hannover,	12000	1,9		Radiophilharmonie NDR	90	yes
6	Orchesterprobezentrum Stolbergerstrasse, Köln, before renovation	5100	1,9		Gürzenich Orchester	90	no
6	Orchesterprobezentrum Stolbergerstrasse, Köln, after renovation	5100	1,3		Gürzenich Orchester	90	yes
6	Kranenburgweg Den Haag	4050	1,3	3.9s at 63Hz	Het Residentiorchest	90	no
8	Crowe1	8400	1,87	0,86	Crowe1	75-95	yes
8	Crowe2	2230	1,63	0,91	Crowe2	75-95	yes
8	Crowe3	4518	1,2	1,05	Crowe3	75-95	yes
8	Crowe4	3200	1,6	1,0	Crowe4	75-95	yes
8	Crowe5	5150	1,47	1,14	Crowe5	75-95	no
8	Crowe6	5760	1,35	1,2	Crowe6	75-95	yes
9	Ufa City, Bashkortostan, Russia	2750	1,4	1,0	National Symphony orchestra of the Republic of Bashkortostan	90	yes
5,10	Konzerthaus, Berlin	2400	1,0		-	90	yes
5,10	Neues Gewandhaus, Leipzig	4200	1,9		Gewandhaus	90	no
11	Gran Teatre del Liceu, Barcelona	1748	1,85	0,9	Gran Teatre del Liceu Symphony Orch.	76	yes

	Sources
0	Anonymous
1	Brekke & Strand
2	Adelman-Larsen
3	Akukon
4	Halmrast
5	Gade, Hong Kong 2012
6	Leutenbach, ISRA-2016
7	Knowles/Crowe, IOA 2010
8	Crowe
9	Livshits
10	Tennhart, Acustica 1995
11	Arau

Relevant links:

Music Room Acoustics an AKUTEK article

Reverberation distance - is it a critical property in ensemble rehearsal room acoustics?  an AKUTEK article

Simulations and subjective rating of acoustic conditions in a symphony orchestra - a case study, by M Skålevik 29.08.2018

Presentation at IOA Hamburg 2018 http://www.akutek.info/Presentations/MS_IOA-Hamburg-2018_pres.pdf

Restrictions on V-T combinations related to ensemble size (Power Point): http://www.akutek.info/Presentations/MS_ensemble_V-T_pres.pdf

Consistency in music room acoustics, (paper) (presentation at Forum Acusticum 08.09.2014)

The important level balance between Self ,Other and Reverberant Sound:  Self, Others and Reverb (paper) presentation;

Rehearsal room acoustics for the orchestra musician (full paper) Preprint of BNAM 2014 paper  (presentation) 03.06.2014

Rooms for music – Acoustical needs and requirements , by JH Rindel 15.06.2012

Music Room Acoustics - Critical parameters   by M Skålevik 23.04.2012

This article is a living research article, to be continued and updated.

First published  01.06.2019, latest change 12.07.2019

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