Simulations of high-frequency vocoder on Mandarin speech recognition for acoustic hearing preserved cochlear implant

Tsung Chen Wu, Tai-Shih Chi, Chia Fone Lee

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

Vocoder simulations are generally adopted to simulate the electrical hearing induced by the cochlear implant (CI). Our research group is developing a new four-electrode CI microsystem which induces high-frequency electrical hearing while preserving low-frequency acoustic hearing. To simulate the functionality of this CI, a previously developed hearing-impaired (HI) hearing model is combined with a 4-channel vocoder in this paper to respectively mimic the perceived acoustic hearing and electrical hearing. Psychoacoustic experiments are conducted on Mandarin speech recognition for determining parameters of electrodes for this CI. Simulation results show that initial consonants of Mandarin are more difficult to recognize than final vowels of Mandarin via acoustic hearing of HI patients. After electrical hearing being induced through logarithmicfrequency distributed electrodes, speech intelligibility of HI patients is boosted for all Mandarin phonemes, especially for initial consonants. Similar results are consistently observed in clean and noisy test conditions.

Original languageEnglish
Pages (from-to)196-200
Number of pages5
JournalProceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH
Volume2017-August
DOIs
StatePublished - 1 Jan 2017
Event18th Annual Conference of the International Speech Communication Association, INTERSPEECH 2017 - Stockholm, Sweden
Duration: 20 Aug 201724 Aug 2017

Keywords

  • Cochlear implant
  • Hearing impaired model
  • Mandarin speech recognition
  • Vocoder simulation

Fingerprint Dive into the research topics of 'Simulations of high-frequency vocoder on Mandarin speech recognition for acoustic hearing preserved cochlear implant'. Together they form a unique fingerprint.

Cite this