
Ampliers
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applications, for instance professional video, it is desiderable to maintain a
relatively at bandwidth, so that we have to refer to the bandwidth atness
expressed in dB. A 0.5 dB atness means that there is no more than 0.5 dB
ripple within the amplier’s range of amplied frequencies.
Observations
When buying earphones or headphones, an unskilled person takes into con-
sideration the design, the price, the comfort, the weight, even the colors of the
plastic envelope. That’s makes no sense if other, more important parameters,
are neglected. Those who know about electronics pay attention in particular to
some specications, among which ...