Microprocessor Controlled Variable Acoustics in Hobart

This paper provides a brief description of the variable acoustic treatment installed in the Production Studio at the new Hobart Radio Studios of the Australian Broadcasting Corporation.a unique part of the design is the microprocessor control which independently adjusts each of the la absorbers and allows repositioning of the absorbers to any.one of up to 100 pre-set arrangements.A VDU displays a complete representation of all absorbers on a single screen and includes text entered by the user to identify each set up.In commissioning tests, reverberation times in the studio were able to be varied from 0.6 to l.h seconds over the range 250 to #000 Hz whilst maintaining a uniform and high quality acoustic result.Subjective appraisal with two groups of musicians confirmed the flexibility and acoustic appeal of the studio for a diverse range of recording requirements.2.