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Differences in nasalance scores obtained with different Nasometer headsets.

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Title: Differences in nasalance scores obtained with different Nasometer headsets.
Authors: Bressmann, Tim1 (AUTHOR) tim.bressmann@utoronto.ca, Tang, Blanche Hei Yung1,2 (AUTHOR)
Source: Clinical Linguistics & Phonetics. Apr/May2025, Vol. 39 Issue 4/5, p504-514. 11p.
Subject Terms: *Voice disorders, *Speech evaluation, Speech disorder diagnosis, Research funding, Research evaluation, Sex distribution, Descriptive statistics, Signal processing, Physiological aspects of speech, Sound recordings, Human voice, Transducers, Velopharyngeal insufficiency
Abstract: The goal of the present research study was to investigate possible differences in nasalance scores between different Nasometer headgears. Frequency response characteristics of microphone pairs in a Nasometer model 6200, a model 6450 and two model 6500 headsets were compared using long-term average spectra of white noise and multi-speaker babble signals. Prerecorded sound files from a male and a female speaker were used to record nasalance scores with the four Nasometer headsets and to calculate cumulative absolute differences within and between the headsets. The main outcome measures were the cumulative absolute differences between the decibel (dB) values in the frequency bins from 300 to 750 Hz for the nasal and oral channels of each microphone pair. Cumulative absolute differences between nasalance scores of repeated stimuli within and across Nasometer headsets were tabulated. Results showed that cumulative absolute differences for the frequency range 300–750 Hz were between 6.58 and 7.68 dB. Within headsets, 95.6% to 100% of measurements of all four Nasometer headsets were within 3 nasalance points, although test–retest differences of up to 6 nasalance points were found. Between headsets, 56.1% to 98.9% of measurements were within 3 nasalance points, with the single largest difference of 8 nasalance points. In conclusion, differences between repeated nasalance scores obtained with the same and different headsets were noted. Clinicians should allow a margin of error of ±6 to 8 nasalance points when interpreting scores from different Nasometer headsets. [ABSTRACT FROM AUTHOR]
Copyright of Clinical Linguistics & Phonetics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Education Research Complete
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  Label: Title
  Group: Ti
  Data: Differences in nasalance scores obtained with different Nasometer headsets.
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  Data: <searchLink fieldCode="AR" term="%22Bressmann%2C+Tim%22">Bressmann, Tim</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tim.bressmann@utoronto.ca</i><br /><searchLink fieldCode="AR" term="%22Tang%2C+Blanche+Hei+Yung%22">Tang, Blanche Hei Yung</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Clinical+Linguistics+%26+Phonetics%22">Clinical Linguistics & Phonetics</searchLink>. Apr/May2025, Vol. 39 Issue 4/5, p504-514. 11p.
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  Data: *<searchLink fieldCode="DE" term="%22Voice+disorders%22">Voice disorders</searchLink><br />*<searchLink fieldCode="DE" term="%22Speech+evaluation%22">Speech evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Speech+disorder+diagnosis%22">Speech disorder diagnosis</searchLink><br /><searchLink fieldCode="DE" term="%22Research+funding%22">Research funding</searchLink><br /><searchLink fieldCode="DE" term="%22Research+evaluation%22">Research evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Sex+distribution%22">Sex distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Descriptive+statistics%22">Descriptive statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Signal+processing%22">Signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Physiological+aspects+of+speech%22">Physiological aspects of speech</searchLink><br /><searchLink fieldCode="DE" term="%22Sound+recordings%22">Sound recordings</searchLink><br /><searchLink fieldCode="DE" term="%22Human+voice%22">Human voice</searchLink><br /><searchLink fieldCode="DE" term="%22Transducers%22">Transducers</searchLink><br /><searchLink fieldCode="DE" term="%22Velopharyngeal+insufficiency%22">Velopharyngeal insufficiency</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The goal of the present research study was to investigate possible differences in nasalance scores between different Nasometer headgears. Frequency response characteristics of microphone pairs in a Nasometer model 6200, a model 6450 and two model 6500 headsets were compared using long-term average spectra of white noise and multi-speaker babble signals. Prerecorded sound files from a male and a female speaker were used to record nasalance scores with the four Nasometer headsets and to calculate cumulative absolute differences within and between the headsets. The main outcome measures were the cumulative absolute differences between the decibel (dB) values in the frequency bins from 300 to 750 Hz for the nasal and oral channels of each microphone pair. Cumulative absolute differences between nasalance scores of repeated stimuli within and across Nasometer headsets were tabulated. Results showed that cumulative absolute differences for the frequency range 300–750 Hz were between 6.58 and 7.68 dB. Within headsets, 95.6% to 100% of measurements of all four Nasometer headsets were within 3 nasalance points, although test–retest differences of up to 6 nasalance points were found. Between headsets, 56.1% to 98.9% of measurements were within 3 nasalance points, with the single largest difference of 8 nasalance points. In conclusion, differences between repeated nasalance scores obtained with the same and different headsets were noted. Clinicians should allow a margin of error of ±6 to 8 nasalance points when interpreting scores from different Nasometer headsets. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Clinical Linguistics & Phonetics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1080/02699206.2024.2305118
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      – Code: eng
        Text: English
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    Subjects:
      – SubjectFull: Voice disorders
        Type: general
      – SubjectFull: Speech evaluation
        Type: general
      – SubjectFull: Speech disorder diagnosis
        Type: general
      – SubjectFull: Research funding
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      – SubjectFull: Research evaluation
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      – SubjectFull: Sex distribution
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      – SubjectFull: Descriptive statistics
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      – SubjectFull: Signal processing
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      – SubjectFull: Physiological aspects of speech
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      – SubjectFull: Sound recordings
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      – SubjectFull: Human voice
        Type: general
      – SubjectFull: Transducers
        Type: general
      – SubjectFull: Velopharyngeal insufficiency
        Type: general
    Titles:
      – TitleFull: Differences in nasalance scores obtained with different Nasometer headsets.
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            NameFull: Bressmann, Tim
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            NameFull: Tang, Blanche Hei Yung
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            – D: 01
              M: 04
              Text: Apr/May2025
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              Y: 2025
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              Value: 39
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