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| “Fletcher and Munson (1937) initially introduced the critical band concept. When a pure tone is masked by BBN, only a limited band of noise around the ___ frequency close to the pure-tone frequency is essential to mask the pure tone. This limited band of frequencies is called the ___ ___ for masking.” |
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| “Although use of the critical band theoretically is ideal for masking, the major drawback is that the listener perceives the critical band as very close to the ___ ___; this can create ___.” |
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| “Speech noise is BBN with a narrower frequency range extending from at least ___-___ Hz. ” |
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“One of the disadvantages of the acoustic-impedance meter shown in Figure 9–15 is that acoustic impedance at the probe tip is affected by the ________, as sound pressure and volume are inversely related.”
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