| 摘要 |
A generating device ( 1 ) for generating a useful stream of a medium ( 2 ) comprises at least a medium stream source ( 14 ) for generating a high-frequency medium stream ( 15 ) and at least a medium stream diode ( 36, 37 ) for cooperating with the generated medium stream ( 15 ), and at least one medium stream sink ( 40, 41 ) for cooperating with the medium stream influenced by the medium stream diodes ( 36, 37 ), wherein the at least one medium stream sink ( 40, 41 ) suppresses high-frequency stream components in the medium stream such that a useful medium stream ( 2 ) in a low-frequency range is obtained.
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