scholarly journals Comparison of speech recognition results for a one‐ and two‐formant speech coding strategy for a multichannel cochlear implant

1988 ◽  
Vol 84 (S1) ◽  
pp. S40-S40
Author(s):  
Judith A. Brimacombe ◽  
Anne L. Beiter ◽  
Mary J. Barker ◽  
Karen A. Mikami ◽  
Steven J. Staller
Keyword(s):  
Speech Recognition ◽  
Cochlear Implant ◽  
Speech Coding ◽  
Coding Strategy

Effect of Frequency Boundary Assignment on Speech Recognition with the Nucleus 24 ACE Speech Coding Strategy

2007 ◽  
Vol 18 (08) ◽  
pp. 700-717 ◽  
Author(s):  
Marios S. Fourakis ◽  
John W. Hawks ◽  
Laura K. Holden ◽  
Margaret W. Skinner ◽  
Timothy A. Holden
Keyword(s):  
Speech Recognition ◽  
Speech Perception ◽  
Cochlear Implants ◽  
Speech Coding ◽  
Frequency Assignment ◽  
Speech Stimuli ◽  
Unlimited Number ◽  
Coding Strategy ◽  
Technological Limitations ◽  
Nucleus 24

The choice of frequency boundaries for the analysis channels of cochlear implants has been shown to impact the speech perception performance of adult recipients (Skinner et al, 1995; Fourakis et al, 2004). While technological limitations heretofore have limited the clinical feasibility of investigating novel frequency assignments, the SPEAR3 research processor affords the opportunity to investigate an unlimited number of possibilities. Here, four different assignments are evaluated using a variety of speech stimuli. All participants accommodated to assignment changes, and no one assignment was significantly preferred. The results suggest that better performance can be achieved using a strategy whereby (1) there are at least 7-8 electrodes allocated below 1000 Hz, (2) the majority of remaining electrodes are allocated between 1100 - 3000 Hz, and (3) the region above 3 kHz is represented by relatively few electrodes (i.e., 1-3). The results suggest that such frequency assignment flexibility should be made clinically available. La escogencia de límites de frecuencia para los canales de análisis de los implantes cocleares se ha visto que impacta el desempeño en la percepción del lenguaje de adultos implantados (Skinner y col, 1995; Fourakis y col, 2004). Mientras que las limitaciones tecnológicas hasta este momento han restringido la factibilidad clínica de investigar nuevas asignaciones de frecuencia, el procesador experimental SPEAR3 ofrece la oportunidad de investigar un número ilimitado de posibilidades. Aquí, se evalúan cuatro asignaciones diferentes utilizando una variedad de estímulos de lenguaje. Todos los participantes se acomodaron a los cambios de asignación y ninguna asignación tuvo una preferencia significativa. Los resultados sugieren que puede obtenerse un desempeño mejor utilizando una estrategia donde (1) existan al menos 7-8 electrodos colocados por debajo de 1000 Hz, (2) la mayoría de los electrodos remanentes sean colocados entre 1100 – 3000 Hz, y (3) la región por encima de 3 kHz esté representada por relativamente pocos electrodos (p.e., 1-3). Los resultados sugieren que tal flexibilidad en la asignación de frecuencias debería estar clínicamente disponible.

Optimizing Cochlear Implant Speech Performance

2003 ◽  
Vol 112 (9_suppl) ◽  
pp. 4-13 ◽  
Author(s):  
Margaret W. Skinner
Keyword(s):  
Cochlear Implant ◽  
Everyday Life ◽  
Speech Coding ◽  
Hearing Level ◽  
Stimulation Rate ◽  
Speech Processor ◽  
Speech Performance ◽  
Coding Strategy ◽  
Learning Language

Results of studies performed in our laboratory suggest that cochlear implant recipients understand speech best if the following speech processor parameters are individually chosen for each person: minimum and maximum stimulation levels on each electrode in the speech processor program (MAP), stimulation rate, and speech coding strategy. If these and related parameters are chosen to make soft sounds (from approximately 100 to 6,000 Hz) audible at as close to 20 dB hearing level as possible and loud sounds not too loud, recipients have the opportunity to hear speech in everyday life situations that are of key importance to children who are learning language and to all recipients in terms of ease of communication.

Comparison of Speech Recognition Ability with Different Speech Processing Strategies by Korean Cochlear Implantees

1992 ◽  
Vol 101 (8) ◽  
pp. 659-664 ◽  
Author(s):  
Yoon Joo Shim ◽  
Gyu Jong Cho ◽  
Hee-Nam Kim ◽  
Young Myoung Kim ◽  
Sung Kyun Moon
Keyword(s):  
Speech Recognition ◽  
Speech Processing ◽  
Speech Coding ◽  
Discrimination Ability ◽  
Processing Strategies ◽  
Methods Of Evaluation ◽  
Significant Difference ◽  
Recognition Ability ◽  
Coding Strategies ◽  
Coding Strategy

Many variables affect the audiologic performance of cochlear implantees. With current methods of evaluation, it is difficult to directly compare auditory function with different speech coding strategies. We compared the audiologic performance directly with F0F1F2 and multipeak speech coding strategies in the same implanted ear of eight Korean cochlear implantees. We tested word and phoneme recognition abilities using Korean word lists for speech audiometry and two-syllable nonsense words, respectively. With the multipeak coding strategy, a significant difference in discrimination ability was found in the initial fricative consonant phonemes (/s/, /ss/, /h/). Our results suggest that the improvement of speech recognition ability with the multipeak coding strategy comes primarily from the better understanding of the initial fricative consonants.

Asynchronous Interleaved Stimulation (AIS): A New Speech Coding Strategy for Cochlear Implant

1997 ◽  
Vol 117 (2) ◽  
pp. 182-186 ◽  
Author(s):  
Michel Ouayoun ◽  
Vincent Péan ◽  
Jacques Génin ◽  
GwenaËL Bachelot ◽  
Claude Fugain ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Speech Coding ◽  
Coding Strategy

Effect of number of channels and speech coding strategy on speech recognition in mid-scala electrode recipients

2019 ◽  
Vol 145 (3) ◽  
pp. 1796-1797 ◽  
Author(s):  
Katelyn A. Berg ◽  
Jack H. Noble ◽  
Benoit Dawant ◽  
Robert Dwyer ◽  
Robert Labadie ◽  
...  
Keyword(s):  
Speech Recognition ◽  
Speech Coding ◽  
Coding Strategy

Self-Reported Listening Habits and Enjoyment of Music among Adult Cochlear Implant Recipients

2009 ◽  
Vol 118 (5) ◽  
pp. 350-355 ◽  
Author(s):  
Lela Migirov ◽  
Jona Kronenberg ◽  
Yael Henkin
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Cochlear Implantation ◽  
Speech Coding ◽  
Musical Instrument ◽  
Open Set ◽  
Coding Strategy ◽  
Listening Habits ◽  
Musical Activities

Objectives: We sought to assess the associations between self-reported listening habits and enjoyment of music, and the following variables: Age at implantation, gender, prelingual versus postlingual deafness, duration of deafness, duration of cochlear implant (CI) use, type of CI, speech coding strategy, and speech perception abilities. Methods: A questionnaire on listening habits and enjoyment of music before the onset of deafness and after implantation was sent to 85 adult CI recipients who had been using the devices for at least 6 months. Results: Of the 53 responders, 39 (73.6%) listened to music after implantation. Listening to music was not significantly related to age at implantation, gender, duration of deafness, duration of CI use, type of CI device, speech coding strategy, or open-set speech perception abilities. The 14 nonlisteners were postlingually deafened. The ratings of enjoyment were the same for 22.6% of patients, improved for 26.4%, and worse for 50.9%. Only 2 of 13 patients who played a musical instrument and 14 of 24 patients who sang before the onset of deafness resumed their musical activities. Conclusions: Despite the decline in listening habits and in the enjoyment of music after cochlear implantation, most patients do listen to music. The changes in listening habits and enjoyment were not related to the selected background variables.

Comparison of the Multipeak and Spectral Peak Speech Coding Strategies of the Nucleus TM 22-Channel Cochlear Implant System

1995 ◽  
Vol 4 (3) ◽  
pp. 49-54 ◽  
Author(s):  
Laura K. Holden ◽  
Margaret W. Skinner ◽  
Timothy A. Holden ◽  
Susan M. Binzer
Keyword(s):  
Speech Recognition ◽  
Cochlear Implant ◽  
Speech Coding ◽  
Recognition Performance ◽  
Sound Field ◽  
Spectral Peak ◽  
Monosyllabic Word ◽  
Coding Strategies ◽  
Implant System

Eight subjects participated in a comparison of the multipeak (MPEAK) and spectral peak (SPEAK) speech coding strategies of the Nucleus TM 22-channel cochlear implant system as part of a long-term monitoring study. Sound-field threshold levels and speech recognition performance on the Bamford-Kowal-Bench Sentence Test, NU-6 Monosyllabic Word Test, and Connected Speech Test or CID Everyday Sentence Test were analyzed for the two speech coding strategies. For the group, speech recognition performance was significantly higher with the SPEAK speech coding strategy than with the MPEAK strategy on all speech tests. For individual subjects, scores with the SPEAK strategy were significantly higher for some subjects on each of the speech tests. None of the subjects scored significantly higher on any of the tests with MPEAK.

Evaluation of the High-Resolution Speech Coding Strategy for the Clarion CII Cochlear Implant System

2003 ◽  
Vol 32 (02) ◽  
pp. 81 ◽  
Author(s):  
Jodi M. Ostroff ◽  
Eytan A. David ◽  
David B Shipp ◽  
Joseph M. Chen ◽  
Julian M. Nedzelski
Keyword(s):  
High Resolution ◽  
Cochlear Implant ◽  
Speech Coding ◽  
Coding Strategy ◽  
Implant System
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