| 摘要 |
<p>A signal processing apparatus (200, 300) comprises a signal path for a signal, the signal path comprising a signal processing stage (220). An auxiliary stage (230) is coupled to an input (222) of the signal processing stage (220) for, in response to a signal in the signal path at the input (222) of the signal processing stage (220), generating a control signal indicative of the time of a crossing of a first threshold by the signal in the signal path at an output (224) of the signal processing stage (220) by detecting a crossing by the signal of a second threshold established by the auxiliary stage (230). The second threshold is substantially equal to the first threshold.</p> |
