Effect of bandwidth extension to telephone speech recognition in cochlear implant users.

  title={Effect of bandwidth extension to telephone speech recognition in cochlear implant users.},
  author={Chuping Liu and Qian-Jie Fu and Shrikanth Narayanan},
  journal={The Journal of the Acoustical Society of America},
  volume={125 2},
The present study investigated a bandwidth extension method to enhance telephone speech understanding for cochlear implant (CI) users. The acoustic information above telephone speech transmission range (i.e., 3400 Hz) was estimated based on trained models describing the relation between narrow-band and wide-band speech. The effect of the bandwidth extension method was evaluated with IEEE sentence recognition tests in seven CI users. Results showed a relatively modest but significant improvement… CONTINUE READING

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