The major triad is considered more consonant than the diminished triad or atonal chord because it comprises tones with fundamentals that are related by simple frequency ratios.
The test battery comprised pure-tone audiometry (PTA), transient evoked otoacoustic emissions (TEOAE), Random Gap Detection RGDD) and Hearing-in-Noise test (HINT).
Variants of the tone cluster include chords comprising adjacent tones separated diatonically, pentatonically, or microtonally.
(Sine waves are signals consisting of "pure tones"—i.e., without overtones; sawtooth waves comprise fundamental tones and all related overtones; square waves consist only of the odd-numbered partials, or component tones, of the natural harmonic series).
The entering tone comprised those syllables that ended in a stop (-p, -t, -k).
At 50 dB HL, stimuli comprising two tones that differed in their onset time were presented binaurally.
In the equal probability stimulus, A and B each comprised 50% of tones.
Auditory stimuli, comprised of pure tones and noise bursts, were digitally generated using a computer-controlled Tucher-Davis Technologies (TDT, Alachua, FL, USA) auditory workstation and delivered through a coupled electrostatic speaker (ED1, TDT).
The stimuli were comprised of 50-ms tone bursts (1100 Hz) delivered through two loudspeakers placed symmetrically on each side of the computer screen.
To account for this possible confound, a subgroup of five subjects was scanned again in a control experiment comprised of a falling-tone chirp (Exp. 2).
