We most recently utilized CATT-Acoustic during a design competition
for a Concert Hall in China. This particular Concert Hall design
featured several elements meant to vary the room’s natural acoustics according
to the requirements of different types of music. For example, during
performances of the large Pipe Organ, the Concert Hall will be acoustically
coupled with additional room volume immediately adjacent to the Concert
Hall. This essentially increases the size of the Concert Hall and
gives the Organ Music the full, reverberant sound of a European Cathedral!
We found that CATT-Acoustic accurately predicted the effects
of acoustically coupled spaces. The impulse responses showed the
desired and dramatic double-slope decay with the change occurring around
750 milliseconds after the direct sound. The quantitative parameters
also accurately represented the double slope decay. Early reverberation
times (T-15) were short, late reverberation times (T-30) were long, and
C80 values indicated excellent Clarity.
These conditions for Organ music, as well as different hall configurations more appropriate for Chamber Music, Orchestral Music and Speech, were also analyzed and auralized. All of the results were recorded onto a Compact Disk so that the competition judges could actually listen to different types of music being played inside our acoustic design.
We have become more impressed with CATT-Acoustic with every new version and every completed project. It has truly become a useful design tool for The Talaske Group.