Validation of calibration procedures and uncertainty estimation of contact-microphone based vocal analyzers

Carullo, Alessio; Vallan, Alberto; Astolfi, Arianna; Pavese, Lorenzo; Puglisi, Giuseppina Emma

doi:10.1016/j.measurement.2015.07.011

Cited by 25 publications

(27 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ECM acquires voltage levels that are generated by changes in acoustic pressure at the surface of the neck due to vocal-fold activity and it exhibits a low sensitivity to background noise. Possible artefacts due to body movements are made negligible by means of a high-pass digital filter (Carullo et al, 2015b). A proper root mean square (rms) voltage threshold distinguishes voiced and unvoiced frames, which are subdivided into non-overlapped intervals of 30 ms in order to effectively detect voiced and unvoiced portions of speech up to the phonemic segmental level (Titze et al, 2007).…”

Section: Devicesmentioning

confidence: 99%

“…(1), the standard uncertainty due to the calibration of the Behringer ECM8000 reference microphone with the B&K 4230 calibrator, obtained as described by Eq. (6) in Carullo et al (2015b), with the uncertainty related to the estimation of the calibration function, which is also called "model error." To quantify the model error, a phonatory system simulator was used as a speech source (Casassa et al, 2017).…”

Section: Instrumental Uncertainty Of the Contact-sensor-based Devicementioning

confidence: 99%

“…The headworn microphones, which are placed at a shorter distance from the mouth, are preferable to microphones in air mounted in front of the speaker, since they ensure a higher signal-to-noise ratio and do not impair the speaker activities. Another approach, investigated in recent studies ( Svec et al, 2005;Carullo et al, 2015b), is based on the estimation of speech SPL from the skin vibration detected by a contact sensor fixed at the jugular notch of the speaker's neck. Devices that embed contact sensors have been mainly developed for assessing occupational voice use (Calosso et al, 2017), since they have a negligible sensitivity to background noise (Carullo et al, 2015a).…”

Section: Introductionmentioning

confidence: 99%

“…as Hillman et al (2006) and Carullo et al (2015b). Other studies have investigated the accuracy of speech SPL parameters estimated by these devices.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Uncertainty of speech level parameters measured with a contact-sensor-based device and a headworn microphone

Astolfi

Castellana

Carullo

et al. 2018

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

This work estimates the uncertainty contributions of speech level parameters measured with a contact-sensor-based device and a headworn microphone. Four contributions are considered: (1) instrumental uncertainty, related to device calibration; (2) method repeatability and (3) reproducibility, estimated through repeated measurements without and with device repositioning, respectively; (4) source reproducibility, due to the variability of human speech. To ascertain changes in speech production, differences between measures should be at least higher than the expanded uncertainty. In the case of device repositioning, the expanded uncertainty combines contributions (1), (3), and (4). When the device is not repositioned, it combines contributions (2) and (4).

show abstract

Section: Devicesmentioning

confidence: 99%

Section: Instrumental Uncertainty Of the Contact-sensor-based Devicementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…as Hillman et al (2006) and Carullo et al (2015b). Other studies have investigated the accuracy of speech SPL parameters estimated by these devices.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Uncertainty of speech level parameters measured with a contact-sensor-based device and a headworn microphone

Astolfi

Castellana

Carullo

et al. 2018

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

show abstract

“…APMs, as described by Nacci et al, can be used to assess the phonation time, phonation density, sound pressure level, fundamental frequency and vocal load, making APM a very useful tool in assessment of voice in professional voice users. New validated devices such as Voice Care described by Carullo et al based on electret condenser microphone as contact microphone are less expensive. The authors developed a portable voice analyser and defined suitable calibration procedures to estimate fundamental frequency, voicing time percentage and sound pressure level.…”

Section: Discussionmentioning

confidence: 99%

Voice burden in teachers and non‐teachers in a UK population: A questionnaire‐based survey

Gadepalli

Fullwood

Ascott

et al. 2019

Clinical Otolaryngology

View full text Add to dashboard Cite

Objective To characterise the burden of voice disorders in teachers in a UK population, compare it with non‐teachers and identify groups of teachers who may be particularly at risk of developing a voice problem. Design Questionnaire‐based survey of primary and secondary school teachers and non‐teachers. Questions consisted of general demographics, VHI‐10 and questions relating to voice problems. Methods Distribution of questionnaires to teachers and non‐teachers and statistical analysis of the responses. Setting University teaching hospital. Participants Teachers and non‐teachers in a region of North West England. Main outcome measures Identification of risk factors for voice problems in teachers, compared to non‐teachers. Results A total of 210 primary and 244 secondary school teachers and 304 non‐teachers participated in the questionnaire survey. Response rates were 67.9% from primary schools, 41.2% from secondary schools and 40.0% from the non‐teachers. 30.0% of teachers and 9.0% of non‐teachers had reported problems with their voice. 12.8% of teachers and 2.0% of non‐teachers had missed work due to voice problems. 14.1% of teachers and 5.3% non‐teachers had seen a general practitioner for voice‐related problems, whilst 7.1% of teachers and 6.3% of non‐teachers had been referred to an otolaryngologist or speech therapist for voice problems. Factors related to VHI‐10 (P < .05) were identified. Conclusions Voice disorders are an occupational health problem for teachers, with a significant burden of these disorders in this group of teachers in the UK. We have identified risk factors that could be exploited to identify groups of teachers who would benefit from early intervention.

show abstract

Effect of outdoor noise and façade sound insulation on indoor acoustic environment of Italian schools

et al. 2017

View full text Add to dashboard Cite

Validation of calibration procedures and uncertainty estimation of contact-microphone based vocal analyzers

Cited by 25 publications

References 19 publications

Uncertainty of speech level parameters measured with a contact-sensor-based device and a headworn microphone

Uncertainty of speech level parameters measured with a contact-sensor-based device and a headworn microphone

Voice burden in teachers and non‐teachers in a UK population: A questionnaire‐based survey

Effect of outdoor noise and façade sound insulation on indoor acoustic environment of Italian schools

Contact Info

Product

Resources

About