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Binaural Dark-Velvet-Noise Reverberator

Jon Fagerström, Nils Meyer-Kahlen, Sebastian J. Schlecht and Vesa Välimäki

Companion page for the paper "Binaural Dark-Velvet-Noise Reverberator" submitted for DafX24, Guildford, Surrey, UK.


Binaural late-reverberation modeling necessitates the synthesis of frequency-dependent inter-aural coherence, a crucial aspect of spatial auditory perception. Prior studies have explored methodologies such as filtering and cross-mixing two incoherent late reverberation impulse responses to emulate the coherence observed in measured binaural late reverberation. In this study, we introduce two variants of the binaural dark-velvet-noise reverberator. The first one uses cross-mixing of two incoherent dark-velvet-noise sequences that can be generated efficiently. The second variant is a novel time-domain jitter-based approach. The methods’ accuracy is assessed through objective and subjective evaluations, revealing that both methods yield comparable performance and clear improvements over using incoherent sequences. Moreover, the advantages of the jitter-based approach over cross-mixing are highlighted by introducing a parametric width control, based on the jitter-distribution width, into the binaural dark-velvet-noise reverberator. The jitter-based approach can also introduce time-dependent coherence modifications without additional computational cost.

Listening Test Items

Listening test sound examples with singing, drums and pink noise as the input to the BDVN reverberator. Please use headphones for the correct binaural experience. Multi Track Audio Player



Pink Noise

Beyond Natural Coherence

Sound examples demonstrating the time-dependent modulated coherence profiles. Please use headphones for the correct binaural experience.