ABSTRACT
INTRODUCTION: The purpose of speech audiometry is to extend the diagnostics of central auditory processes. First audiometric tests were monaural tests introduced in the fifties by Bocca and Calearo to diagnose Central Auditory Processing Disorders (CAPD). Monaural tests are characterized by low redundancy, which allows for deciphering a given word or phrase only if the amount of accessible information exceeds a required minimum. Until now, a new monaural filtered speech test has been drawn up at the Department of Phoniatrics and Audiology. The purpose of the research was to draw up and assess the effectiveness of monaural low redundancy tests, in which the acoustic signal has been compressed or noise has been added. MATERIALS AND METHOD: 35 people with normal hearing, aged 16-60, have been examined. The test material included: a compressed speech test, in which the speech signal has been accelerated by 25% with the use of Cool Edit Pro 2.0; the pauses between the words have not been shortened a speech-in-noise test, in which the noise has been added with the use of Cool Edit Pro 2.0. The signal/noise ratio has been set at the level of 10 dB. The examination has been conducted at three different volume levels: 25, 35 and 45 dB. CONCLUSIONS: Best results have been achieved at the volume level of 45 dB (above hearing threshold); There were differences in results at volume levels 25 dB and 35 dB in compressed speech test and at volume level 25 dB in speech in noise. Both tests have shown the influence of age on the test result which suggests undiagnosed CAPD among people (with normal hearing) aged over 55.
Subject(s)
Audiometry, Speech , Hearing Disorders/diagnosis , Noise , Adolescent , Adult , Auditory Threshold , Female , Humans , Male , Middle AgedABSTRACT
INTRODUCTION: Evaluation of the objective results in the clinical examination of central auditory disorders requires the use of reliable language tests which provide the means for the estimation of patients' audio-verbal communicative skills. MATERIALS AND METHODS: The authors present a new set of more difficult language tests in Polish, including a filtered speech test, numeral and verbal dichotic tests and the normal Calearo test. The tests were evaluated on a group of people with good hearing from various age groups. CONCLUSIONS: The presented tests are the only existing ones created for the Polish language which expand the diagnostic possibilities in the case of central auditory processing disorders. It was found that there is a right ear predominance in dichotic tests, which grows together with the patient's age. This observation can be very beneficial in practice, allowing for hearing aids to be better fitted.
Subject(s)
Audiometry, Speech/instrumentation , Dichotic Listening Tests/methods , Adult , Age Factors , Aged , Auditory Threshold/physiology , Dichotic Listening Tests/standards , Female , Hearing/physiology , Hearing Disorders/classification , Hearing Disorders/diagnosis , Humans , Language , Loudness Perception/physiology , Male , Middle Aged , Phonetics , Poland , Reference ValuesABSTRACT
INTRODUCTION: Dychotomic tests in speech audiometry are extremely beneficial, especially in diagnosing central auditory processing disorders. MATERIALS AND METHODS: Basing on new articulatory lists (NLA-93), the authors have prepared a new set of language tests, including filtered speech test, numeral and verbal dichotic tests and Calearo test. CONCLUSIONS: The phonetic characteristics of the tests are presented, with special attention paid to their phonetic balance.
Subject(s)
Audiometry, Speech/methods , Auditory Perception , Auditory Perceptual Disorders/diagnosis , Vocabulary , Audiometry/standards , Audiometry, Speech/standards , Humans , Poland , Speech Perception , Terminology as TopicABSTRACT
There are many tests prepared for speech evaluation for different age groups and with any disabilities. The percent of correct repeated mono- or bisyllabes words create the final result. Sometimes this score is lower than real oral communication skill of CI patient. In the years 1994-2002 in Poznan 158 cochlear implantations were performed. Since few months the evaluation of the distinctness and discrimination of phonems of cochlear implants children are being conducted. It was found some differences between distinctness and discrimination of phonems and discrimination of words. It means that scores achieved by children in standarized words--tests do not reflect the real level of speech development of each child.
