Acoustic treatment for a piano practice room: Galleria Music School

The customer is Galleria Music School, in Sin Ming Plaza Tower 1, Singapore. There is an upright piano in each teaching studio, backed up against a wall. The studios are small, carpeted, but with highly acoustically reflective walls of glass and plastered brick. As a result the sound level in them is intolerably high, and the pianos are tonally bright and ‘jangly’. In two studios the problem has been addressed by putting two UNISON SAP-75 panels in a six-inch gap between the rear of the piano and the wall. The panels are in portrait orientation and sit on the carpeted floor; no floor stands are used. The panels have cut the loudness of the pianos. The tonal character of the pianos has also been greatly improved – they are much more tonally balanced.

Pictures to follow.

Cross-posted from here.

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Acoustic treatment for a music practice room: Yamaha AvantGrand N3 in a bedroom

The customer Mr K is an avid amateur pianist. He owns two grand pianos (Sauter Delta, Shigeru Kawai SK-6), and a Yamaha AvantGrand N3 hybrid piano. The Sauter and Shigeru Kawai grand pianos are located in the living room, whereas the Yamaha AvantGrand is located in a small bedroom.

The AvantGrand N3 is capable of playing as loud as a real piano. Although the loudness can be adjusted via the AvantGrand’s volume control the room imparts a ‘boxy’ colouration to the lower half of the keyboard, and a rather harsh ‘glare’ to the upper half of the keyboard. Bass articulation is also indistinct because of strong room modes. Mr K uses four UNISON SAP-75 panels on floor stands and six UNISON D-C diffusors on the ceiling to tame the room colouration. The ceiling diffusors also eliminated the intense slap-back echo off the ceiling, by dissipating the reflections rather than absorbing the sound.

Pictures to follow.

Cross-posted from here.