Spontaneous otoacoustic emission frequencies are stable to within a fraction of a percent

Evidence

The three discussed kinds of emissions seem to be created by the same source, as can be deduced from several effects. One of these effects is that the minimal frequency distance between neighbouring spontaneous emissions, or between neighbouring maxima in the spectral composition of delayed emissions, are the same and amount to about 0.4 Bark, i.e. a little less than half a critical band. In this context, it may be interesting to realize that the reciprocal value of the delay time of the delayed evoked emissions is almost identical to this value of 0.4 Bark, as would be expected in linear circuits. Moreover, a spontaneous emission that has disappeared, has been measured as a relatively strong simultaneously evoked emission during the same day. Further, spontaneous emissions can also be measured as simultaneously evoked emissions, an effect that also indicates that the source of the three kinds of emissions may be the same. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 309 (#corroborates, via linked claim)

Categorization

• corroborated: 2 independent passages support this claim
• XREF: connects to: Spontaneous and evoked otoacoustic emissions likely share a single source — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 309; Otoacoustic emission spectra show discrete energy maxima stable across sensation levels; Healthy ears continuously emit faint spontaneous sounds linked to frequency sensitivity

Related

• Spontaneous and evoked otoacoustic emissions likely share a single source (similarity 0.92)
• Evoked emissions vanish exactly when the evoking tone becomes inaudible (similarity 0.89)
• Otoacoustic emission spectra show discrete energy maxima stable across sensation levels (similarity 0.87)
• Spontaneous otoacoustic emissions show a minimum frequency spacing that grows with frequency (similarity 0.86)
• A single source generates all three kinds of otoacoustic emissions. (similarity 0.86)
• Spontaneous emission frequencies remain stable to within one percent (similarity 0.86)
• Otoacoustic emissions originate peripherally before neural encoding begins (similarity 0.85)
• Delayed otoacoustic emissions grow linearly then saturate 10-20 dB above threshold (similarity 0.84)
• Most human ears display synchronized spontaneous otoacoustic emissions when driven (similarity 0.84)
• Healthy ears continuously emit faint spontaneous sounds linked to frequency sensitivity (similarity 0.84)
• Delayed evoked otoacoustic emissions show discrete spectral peaks rather than continuous energy (similarity 0.84)
• Spontaneous emission spacing reflects the frequency step producing 180 degrees of phase shift. (similarity 0.83)
• The four otoacoustic emission types are distinguished by whether and how they are evoked (similarity 0.83)
• Delayed otoacoustic emissions obey linear superposition at low amplitudes (similarity 0.82)
• Spontaneous otoacoustic emissions cluster near SFOAE fine-structure maxima but remain undetectable there. (similarity 0.82)

Broader Connections

• Otoacoustic emission spectra show discrete energy maxima stable across sensation levels #corroborates (0.85)
• Spontaneous and evoked otoacoustic emissions likely share a single source #corroborates (0.82) — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 309
• Healthy ears continuously emit faint spontaneous sounds linked to frequency sensitivity #expands (0.75)