Refining consonance sensation through spectral component control in additive resynthesis

A previous study explored the potential to influence the perception of consonance by controlling the spectral components of simultaneous pitches within a chord in sound synthesis using the additive method. This approach involves considering spectral components across in all simultaneously sounding pitches constituting a chord. Components within the range of beatings and roughness are adjusted to gradually enhance or weaken both phenomena. So far, the idea and method were implemented in a basic additive synthesizer, producing simple, abstract, time-invariant timbres. The current study extends this research and addresses challenges associated with implementing the aforementioned consonance-altering mechanism in a more advanced additive synthesizer, applied to the task of resynthesizing the sound of selected acoustic instruments. This study deals with natural, independent evolution of spectral components, wherein consonance undergoes gradual variations over time. Additionally, it presents a solution to mitigate the impact of the mechanism on the overall signal level, arising from the attenuation of selected spectral components.