| 摘要 |
A speech recognition device with a frequency range with an upper frequency limit f<SUB>max </SUB>is provided. The speech recognition device has more than two microphones with distances between the microphones, wherein the greatest common factor of the distances between the microphones is less than the speed of sound divided by f<SUB>max</SUB>. More particularly, where the microphones are spaced a total distance, the number of the more than two microphones is less than the one half the total distance times the upper frequency limit divided by the speed of sound.
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