Note 1: Stroke speed is usually expressed as a number of strokes per minute. When the system scans in both directions, the stroke speed is twice this number.
Note 2: In most conventional mechanical systems, the stroke speed is equivalent to drum speed[?].
Source: from Federal Standard 1037C and from MIL-STD-188
... the postive phase sound waves from the front of the speaker. The result of this is cancellation and so the efficiency of the speaker is compromised.
The m ...
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