Friday 8 - Friday 8 The ear and hearing. Name_ Section_ The...

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Friday 8 The ear and hearing. Name____________________ Section_________________ The critical band. The ear performs frequency analysis on sound. The place theory of hearing associates a specific location on the cochlea for each frequency. The response of the cochlea is a maximum at this location for a given frequency, but even a pure frequency will excite the cochlea over a region called the "critical band". Sounds composed of multiple frequencies will be heard differently depending on whether the critical bands of these frequencies overlap. When sound at one frequency affects your ability to hear sound at another frequency this is called "masking". Masking is influenced by whether or not the critical bands of two sounds overlap. 1) You will hear a sequence of tones from a tape. Observe how masking is affected by overlapping critical bands. How is it affected? If two tones are close in frequency then the louder one can mask the softer one. One tone does not have to be at the same frequency to mask another. If you have noise, which has
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Friday 8 - Friday 8 The ear and hearing. Name_ Section_ The...

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