Acta Oto-Laryngologica
ISSN: 0001-6489 (Print) 1651-2251 (Online) Journal homepage: http://www.tandfonline.com/loi/ioto20
Undistorted And Filtered Speech Audiometry In Children With Normal Hearing A. Palva & K. Jokinen To cite this article: A. Palva & K. Jokinen (1975) Undistorted And Filtered Speech Audiometry In Children With Normal Hearing, Acta Oto-Laryngologica, 80:1-6, 383-388, DOI: 10.3109/00016487509121340 To link to this article: http://dx.doi.org/10.3109/00016487509121340
Published online: 08 Jul 2009.
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Citing articles: 4 View citing articles
Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=ioto20 Download by: [Flinders University of South Australia]
Date: 21 March 2016, At: 23:25
Acta Otolaryngol80: 383-388, 1975
UNDISTORTED AND FILTERED SPEECH AUDIOMETRY IN CHILDREN WITH NORMAL HEARING A. Palva and K. Jokinen From the Department of Otolaryngology, University of Oulu, Oulu, Finland
Acta Oto-Laryngologica 1975.80:383-388.
(Received March 1, 1975)
Abstract. Undistorted and filtered speech tests were carried out in 140 test subjects with normal hearing acuity ranging in age from 4 to 19 years. Routine adult word lists were used in all tests. The intelligibility of undistorted speech rose markedly in the age groups from 4 to 9 years and correspondingly in the filtered speech test up to 11 years, taking the group 16-19 years as basis of reference. According to these results a speech discrimination test can be made in childhood with the same methods as in adults, if the norms are taken into account. In the filtered speech test the binaural test result and the monaural discrimination ability of the left ear were significantly better than the monaural test results for the right ear up to the age of 12-13 years.
Speech discrimination tests can be carried out at pre-school age by using the ordinary tests prepared for adults, utilizing the standards in different age groups. Even distorted speech tests have been utilized in children (Boothroyd, 1970) using low-pass and high-pass filtering. Speech discrimination scores in children were noticeably lower than those of adults. Highpass filtering had a more pronounced effect than low-pass filtering on the scores in children. Maximal discrimination of normalhearing children increased significantly between the ages of 6 and 9 1/2 years (Boothroyd, 1968). Siegenthaler (1969) supposed that the auditory functions have stabilized at the adult level at the age of 12 years and in most cases evenat 8 years. This study was supported in part by a grant from the State Medical Research Council, Helsinki, Finland.
To get a good reference score for speech audiometry in children using the same methods as for adults, we performed undistorted and filtered speech discrimination tests in a group of normal children. MATERIAL AND METHOD The study consisted of 140 test subjects, 78 girls and 62 boys, ranging in age from 4 to 19 years. There were 20 subjects in each of the age groups of 4-5 years, 6-7 years, 8-9 years, 10-1 1 years, 12-13 years, 14-15 years and 16-19 years. Routine clinical otorhinolaryngological examination was made in each case. None of the test subjects had any ear diseases. Pure tone threshold measurements by air and bone conduction were made at 125, 250, 500, 1000, 2 000, 4000, 6000 and 8 000 Hz with a Madsen Model OB 60 audiometer equipped with Beltone TDH-39 earphones. Calibration of the audiometer was made according to the ISOstandard. Undistorted speech audiometry was carried out by the method of T. Palva (1952), measuring the speech reception threshold (SRT) and the discrimination of speech 30 dB above the SRT. The same vocabulary was used as in routine adult tests. A Madsen Model SU20 speech unit was connected to the system used in pure tone audiometry. Acta Oto/a?yngo/80
384
A . Palva and K . Jokinen
Table I. Average pure tone thresholds in different age groups Frequency (Hz) 125
250
500
1000
2 000
Mean S.D.
Mean S.D.
Mean S.D .
Mean S.D.
Mean S.D.
right left
14.0 13.7
11.2 11.0
6-7
right left
12.2 11.7
5.0 4.5 4.7 5.4
16-19
right left
11.2 9.5
3.6 2.2
8.7
Age group 4-5
10.0 9.0 8.0
5.1 4.8 5.1 5.8
8.7* 9.0*
3.9 4.5
7.7 7.2
2.7 2.5
5.5 5.7
2.9 4.1
5.7 4.1 6.7** 4.4
4.4 4.1
8.0* 6.2 4.7
4.2 4.4
6.2* 5.5
3.9 4.6
2.8 2.9
4.2 4.5
2.4 3.2
3.0 2.0
3.4 3.8
8.5**
Acta Oto-Laryngologica 1975.80:383-388.
Differences were calculated relative to the oldest age group. Significance level: p
ISSN: 0001-6489 (Print) 1651-2251 (Online) Journal homepage: http://www.tandfonline.com/loi/ioto20
Undistorted And Filtered Speech Audiometry In Children With Normal Hearing A. Palva & K. Jokinen To cite this article: A. Palva & K. Jokinen (1975) Undistorted And Filtered Speech Audiometry In Children With Normal Hearing, Acta Oto-Laryngologica, 80:1-6, 383-388, DOI: 10.3109/00016487509121340 To link to this article: http://dx.doi.org/10.3109/00016487509121340
Published online: 08 Jul 2009.
Submit your article to this journal
Article views: 16
View related articles
Citing articles: 4 View citing articles
Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=ioto20 Download by: [Flinders University of South Australia]
Date: 21 March 2016, At: 23:25
Acta Otolaryngol80: 383-388, 1975
UNDISTORTED AND FILTERED SPEECH AUDIOMETRY IN CHILDREN WITH NORMAL HEARING A. Palva and K. Jokinen From the Department of Otolaryngology, University of Oulu, Oulu, Finland
Acta Oto-Laryngologica 1975.80:383-388.
(Received March 1, 1975)
Abstract. Undistorted and filtered speech tests were carried out in 140 test subjects with normal hearing acuity ranging in age from 4 to 19 years. Routine adult word lists were used in all tests. The intelligibility of undistorted speech rose markedly in the age groups from 4 to 9 years and correspondingly in the filtered speech test up to 11 years, taking the group 16-19 years as basis of reference. According to these results a speech discrimination test can be made in childhood with the same methods as in adults, if the norms are taken into account. In the filtered speech test the binaural test result and the monaural discrimination ability of the left ear were significantly better than the monaural test results for the right ear up to the age of 12-13 years.
Speech discrimination tests can be carried out at pre-school age by using the ordinary tests prepared for adults, utilizing the standards in different age groups. Even distorted speech tests have been utilized in children (Boothroyd, 1970) using low-pass and high-pass filtering. Speech discrimination scores in children were noticeably lower than those of adults. Highpass filtering had a more pronounced effect than low-pass filtering on the scores in children. Maximal discrimination of normalhearing children increased significantly between the ages of 6 and 9 1/2 years (Boothroyd, 1968). Siegenthaler (1969) supposed that the auditory functions have stabilized at the adult level at the age of 12 years and in most cases evenat 8 years. This study was supported in part by a grant from the State Medical Research Council, Helsinki, Finland.
To get a good reference score for speech audiometry in children using the same methods as for adults, we performed undistorted and filtered speech discrimination tests in a group of normal children. MATERIAL AND METHOD The study consisted of 140 test subjects, 78 girls and 62 boys, ranging in age from 4 to 19 years. There were 20 subjects in each of the age groups of 4-5 years, 6-7 years, 8-9 years, 10-1 1 years, 12-13 years, 14-15 years and 16-19 years. Routine clinical otorhinolaryngological examination was made in each case. None of the test subjects had any ear diseases. Pure tone threshold measurements by air and bone conduction were made at 125, 250, 500, 1000, 2 000, 4000, 6000 and 8 000 Hz with a Madsen Model OB 60 audiometer equipped with Beltone TDH-39 earphones. Calibration of the audiometer was made according to the ISOstandard. Undistorted speech audiometry was carried out by the method of T. Palva (1952), measuring the speech reception threshold (SRT) and the discrimination of speech 30 dB above the SRT. The same vocabulary was used as in routine adult tests. A Madsen Model SU20 speech unit was connected to the system used in pure tone audiometry. Acta Oto/a?yngo/80
384
A . Palva and K . Jokinen
Table I. Average pure tone thresholds in different age groups Frequency (Hz) 125
250
500
1000
2 000
Mean S.D.
Mean S.D.
Mean S.D .
Mean S.D.
Mean S.D.
right left
14.0 13.7
11.2 11.0
6-7
right left
12.2 11.7
5.0 4.5 4.7 5.4
16-19
right left
11.2 9.5
3.6 2.2
8.7
Age group 4-5
10.0 9.0 8.0
5.1 4.8 5.1 5.8
8.7* 9.0*
3.9 4.5
7.7 7.2
2.7 2.5
5.5 5.7
2.9 4.1
5.7 4.1 6.7** 4.4
4.4 4.1
8.0* 6.2 4.7
4.2 4.4
6.2* 5.5
3.9 4.6
2.8 2.9
4.2 4.5
2.4 3.2
3.0 2.0
3.4 3.8
8.5**
Acta Oto-Laryngologica 1975.80:383-388.
Differences were calculated relative to the oldest age group. Significance level: p
