| 21. | Hydrosalpinx, or fallopian tube dilation, can be mistaken for an ovarian cyst due to its anechoic appearance.
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| 22. | The building also has several acoustics labs including two anechoic chambers and a reverberation chamber for performing acoustics research.
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| 23. | Some people feel unsettled when they first experience an anechoic chamber due to the sudden absence of this phenomena.
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| 24. | Some developers eschew anechoic chambers in favor of specific standardized room setups intended to simulate real-life listening conditions.
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| 25. | The Royal Navy started using anechoic tiles in 1980, when the was fitted with them during its second refit.
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| 26. | Building 20 also housed one of the first anechoic chambers, where research was performed by acoustics pioneer Leo Beranek.
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| 27. | Anechoic foam is great for the higher frequency but for the pedal drum and bass no good at all.
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| 28. | HRTFs are typically measured in an anechoic chamber to minimize the influence of early reflections and reverberation on the measured response.
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| 29. | The U-boat anechoic tile rubber coating, one layer of which contained circular air pockets to defeat ASDIC sonar.
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| 30. | Since 1974 Paul Barton of PSB Speakers used the NRC's world-class measurement facilities, their anechoic chamber.
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