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Different groups
of musical instruments have different demands on the
room acoustics of lesson and study rooms of
conservatories. To apply this differentiation for the
desired acoustics of the different groups of instruments,
research is done with musicians in two test rooms with
different volumes of about 100 and 25 m3
The acoustical parameters coulsd be changed by varying
the amount of absorption panels in the test rooms. In this way, investigations are
made on the desired acoustics of the different groups of
instruments.The subjective experiences of the musicians
are linked to the results of the objective measurements
to formulate a model for the desired acoustics. The
demands on the room acoustical facilities of the
different groups of instruments appear to diverge a lot.
Models are formulated for players of jazz wind, brass,
wood wind, flutes, stringed instruments, piano, organ,
strings, electrical amplified instruments, double bass
jazz, vocals, non melodic percussion, mallets,
kettledrums, brass ensemble, jazz group / rock band,
classical ensemble, theory general and solfege. In
contrast with existing models for the desired acoustics
of music halls log RT = a log V + b,
as formulated by Cremer and Müller and Nijs and de
Vries, the loudness has an important influence on the
desired acoustics of smaller rooms with volumes below
400 m3.
So, there is proposed a different basic model for the
relation between the room’s volume and its reverberation
time: RT = p log V + q.
The global values for p and q are 0.45 and 0.36
respectively.
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