18 May 2016 FIR Designer 1.3 FIR Designer 1.3 adds an filter output gain and fixes a minor UI bug. It’s now available for download. Michael John Smithers( Director - Eclipse Audio | Director of R&D - Rational Acoustics )Michael is the founder of Eclipse Audio and developer of the FIR Designer software range. His career includes senior research roles at Dolby Laboratories and leadership positions at Rational Acoustics, with 30 years of experience in audio DSP, loudspeaker optimization, and acoustic measurement.