HeLPS - Cochlear Implant Demo 5A - Speech
Speech samples are presented with and without video to show the benefit of combining lipreading with a degraded auditory signal.
When listening to a given stimulus, always start on the left and work to the right, to a greater number of channels, to avoid hearing the message clearly before you hear it distorted.
Things to listen for:
1) Note the increase in the intelligibility of speech as the number of channels in the simulation increases. With a large number of channels it sounds very much like whispered speech. The performance of implant recipients, on average, on tests of speech reception (in quiet, without lipreading) is comparable to that of normal-hearing subjects listening through this type of simulation with about 4 channels. The performance of the best implant recipients is comparable to that obtained with an 8-channel simulation (Friesen et al., 2001).
2) Note the assistance in speech intelligibility provided by lipreading. With a given number of channels, listen to the audio-only stimulus first, think about how much of the sentence you understood, and then try the audio-video version of it.
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CI-1 |
CI-4 |
CI-8 |
CI-12 |
CI-20 |
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Sentence 1 (A) |
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Sentence 1 (A/V) |
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Sentence 2 (A) |
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Sentence 2 (A/V) |
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Sentence 3 (A) |
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Sentence 3 (A/V) |
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When you are finished, click here to continue on to Cochlear Implant Demo 5B - Music.