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Contribution of low-frequency acoustic information to Chinese speech recognition in cochlear implant simulations
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10.1121/1.2336990
/content/asa/journal/jasa/120/4/10.1121/1.2336990
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/4/10.1121/1.2336990

Figures

Image of FIG. 1.
FIG. 1.

Speech reception thresholds (SRTs) for Chinese sentences (left panel) and recognition scores for Chinese phonemes and tones (right panel) in steady-state, speech-shaped noise, as a function of the cutoff frequency for low-pass filtered speech in the bilateral EAS simulation. The symbols represent the mean values, and the error bars represent 1 standard deviation. The asterisks indicate EAS performance that was significantly better than that with the CI simulation alone (i.e., the “CI only” condition).

Image of FIG. 2.
FIG. 2.

Percent information received for Chinese consonant recognition in steady-state, speech-shaped noise, as a function of the cutoff frequency for low-pass filtered speech in the bilateral EAS simulation. The symbols represent the mean data for voicing, manner, and place of articulation. The error bars represent 1 standard deviation. The asterisks indicate EAS performance that was significantly better than that with the CI simulation alone (i.e., the “CI only” condition).

Image of FIG. 3.
FIG. 3.

Speech reception thresholds (SRTs) for Chinese sentences in steady-state, speech-shaped noise, as a function of the cutoff frequency for low-pass filtered speech in the bilateral EAS simulation. The filled symbols and solid line show the simulated EAS data with spectral overlap between the CI simulation and low-pass filtered speech (same plot as in Fig. 1 , left panel). The open symbols and dashed line show the simulated EAS data with no spectral overlap between the CI simulation and low-pass filtered speech. The symbols represent the mean values, and the error bars represent 1 standard deviation.

Tables

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TABLE I.

The corner frequencies of the six frequency channels used in the CI simulations. The lowest frequency limit of the overall input acoustic frequency range for the CI simulation was equal to the cutoff frequency for low-pass filtered speech.

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/content/asa/journal/jasa/120/4/10.1121/1.2336990
2006-10-01
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Contribution of low-frequency acoustic information to Chinese speech recognition in cochlear implant simulations
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/4/10.1121/1.2336990
10.1121/1.2336990
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