AAESOptimisationExamples

Audio examples for the paper “Closed-Loop Differentiable Optimisation for Active Acoustics”. Please view this on GitHub pages.

Task 1: Colouration Reduction (open- vs closed-loop)

Power spectrograms from one test position in the Room 1 16 × 16 AAES comparing the unequalised condition (a) to the open- (b) and closed-loop (c) results.

Impulse Responses

Passive Room

a. No Equalisation

b. Optimised (Open-Loop)

c. Optimised (Closed-Loop)

Saxophone Convolution

Passive Room

a. No Equalisation

b. Optimised (Open-Loop)

c. Optimised (Closed-Loop)

Task 2 - Late Reverberation Matching (closed-loop)

Power spectrograms of (a) the passive RIR of Room 1, (b) the target RIR, and (c) the optimised Room 1 16 × 16 AAES. Dashed white lines indicate the −30 dB profile with half-octave-band resolution.

Impulse Responses

a. Passive Room

b. Target

c. Optimised

Optimised (modified*)

Saxophone Convolution

a. Passive Room

b. Target

c. Optimised

Optimised (modified*)

*To provide more comparable early energy, the impulse responses of these examples were constructed by crossfading from the target to the optimised result (between 50 and 100 ms relative to the direct impulse).