SoundSketcher research

SoundSketcher Experiments

Listening experiments and interface reconstructions that shaped SoundSketcher’s mappings, examples, and evaluation logic.

JASA Express Letters · 2026

Indefinite-Pitch Sounds

An interactive showcase of the sine-tone matching task used to study pitch-height judgements for non-harmonic, noisy, and acoustically ambiguous sounds.

Research question: when a sound lacks a stable fundamental frequency, can listeners still make reliable pitch-height matches?

48 listeners19 soundsPitch height

SoundSketcher design study

Noise-Tonal Preference

A reconstruction of the questionnaire interface used to collect preferences for visualizing mixtures between noisy and tonal components.

Research question: how should SoundSketcher represent sounds that sit between textural noise and stable tonal material?

41 listeners6 stimulus pairsPreference

CMMR 2025 · Exp. 1

Between Bouba and Kiki lies Grougi

A crossmodal experiment where listeners matched 30 sound stimuli to a morphing shape continuum — from a smooth circle to sharp spikes — revealing systematic sound–shape correspondences across smooth, rough and sharp timbres.

Research question: does roughness occupy the perceptual middle ground between smooth (Bouba-like) and sharp (Kiki-like) sounds, and can acoustic features predict these crossmodal mappings?

27 listeners30 soundsSound–shape

CMMR 2025 · Exp. 2

Smooth, Rough, Sharp

Listeners rated the 30 Bouba/Kiki stimuli on three independent scales — smoothness, roughness and sharpness — validating the timbre categories used in the shape study.

Research question: are smoothness, roughness and sharpness heard as distinct qualities, and do they match the intended stimulus categories?

29 listeners30 soundsTimbre semantics

Research context

The indefinite-pitch showcase is backed by the JASA Express Letters paper “Beyond fundamental frequency: Pitch height judgments in Indefinite-Pitch sounds”. The Bouba/Kiki and semantic-rating showcases present Experiments 1 and 2 of the CMMR 2025 paper “Between Bouba and Kiki lies Grougi”.