Change search
ReferencesLink to record
Permanent link

Direct link
A comparison of different methods to measure the EGG contact quotient
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH, Music Acoustics. (Musikakustik)ORCID iD: 0000-0002-3362-7518
2006 (English)In: Logopedics Phoniatrics Vocology, Vol. 31, no 3, 126-138 p.Article in journal (Refereed) Published
Abstract [en]

The results from six published electroglottographic (EGG-based) methods for calculating the EGG contact quotient (CQEGG) were compared to closed quotients derived from simultaneous videokymographic imaging (CQKYM). Two trained male singers phonated in falsetto and in chest register, with two degrees of adduction in both registers. The maximum difference between methods in the CQEGG was 0.3 (out of 1.0). The CQEGG was generally lower than the CQKYM. Within subjects, the CQEGG co-varied with the CQkym, but with changing offsets depending on method. The CQEGG cannot be calculated for falsetto phonation with little adduction, since there is no complete glottal closure. Basic criterion-level methods with thresholds of 0.2 or 0.25 gave the best match to the CQKYM data. The results suggest that contacting and de-contacting in the EGG might not refer to the same physical events as do the beginning and cessation of airflow.

Place, publisher, year, edition, pages
Informa Healthcare, 2006. Vol. 31, no 3, 126-138 p.
National Category
Medical Laboratory and Measurements Technologies Otorhinolaryngology Fluid Mechanics and Acoustics
URN: urn:nbn:se:kth:diva-51781PubMedID: 16966155ScopusID: 2-s2.0-33748562827OAI: diva2:465076

tmh_import_11_12_14. QC 20120112 QC 20150731

Available from: 2011-12-14 Created: 2011-12-14 Last updated: 2015-07-31Bibliographically approved

Open Access in DiVA

No full text


Search in DiVA

By author/editor
Ternström, Sten
By organisation
Music Acoustics
Medical Laboratory and Measurements TechnologiesOtorhinolaryngologyFluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 25 hits
ReferencesLink to record
Permanent link

Direct link