Electrolaryngography measures vocal pitch directly from fold contact, bypassing microphone bleed.

Evidence

The f0 of each of the four singers was measured when they sang the set of exercises by means of an electrolaryngograph (Abberton et al., 1989), which monitors vocal fold vibration directly. It makes use of two electrodes that are placed externally on the neck at the level of the larynx. A small high-frequency electrical current flows between the electrodes that is higher when the vocal folds are in contact than when they are apart. Note that acoustic measurements could not be used for f0 measurement in this experiment for four singers since the recordings of each singer would be contaminated with the sound from the other singers. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1380

Categorization

• SEED: Angle: ‘How do you measure a voice you can’t isolate?’ — a piece on measurement methods that must outwit the physical world they study.
• XREF: Connects to the laryngograph/electroglottograph literature and to the earlier discussion of voice source measurement techniques. — connects to: Electrolaryngographs measure pitch directly without acoustic contamination; An electrolaryngograph measures vocal fold vibration via neck electrodes; Vocal fold vibration can be measured through external neck electrodes via electrical impedance. — David Howard, Jamie Angus, coustics and Psychoacoustics, 3034 (+8 more)

Broader Connections

• Electrolaryngographs measure pitch directly without acoustic contamination #corroborates (1.00)
• An electrolaryngograph measures vocal fold vibration via neck electrodes #expands (1.00)
• Vocal fold vibration can be measured through external neck electrodes via electrical impedance. #expands (1.00) — David Howard, Jamie Angus, coustics and Psychoacoustics, 3034
• The vocal folds vibrate via pressure changes from curved airflow, not the Bernoulli effect #complicates (0.85) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1325
• Vocal pitch is controlled through fold tension and vibrating mass #qualifies (0.80)
• Vocal fold oscillation frequency is predictable without invoking aerodynamic forces #qualifies (0.80) — Eric J. Heller, Why You Hear What You Hear- An…, 1735
• Cochlear electrode pitch can be probed by acoustic tones or direct biphasic stimulation. #complicates (0.75) — Dijk, Pim van, Physiology, Psychoacoustics and…, 2096
• The glottal waveform can be estimated indirectly through inverse modeling of microphone recordings #contradicts (0.75) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 561
• Vocal fold waveform shape with rich harmonics is what makes speech possible #complicates (0.75) — Eric J. Heller, Why You Hear What You Hear- An…, 1660
• Lip and vocal fold vibration is driven by Bernoulli pressure reduction from airflow #complicates (0.75) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1240
• BIC-based electrode pairing is validated against psychoacoustic pitch and timing measures #complicates (0.70) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1455