| 摘要 |
Embodiments described herein provide a method and apparatus for increasing dynamic range. The method begins when a signal is input to a compander and the compander gain of the signal is measured. The compander gain level is then compared with a predetermined threshold. If the compander gain is less than the predetermined threshold, then the chopper is turned on. If the chopper is already operating as a result of a previous iteration, then it remains on after the comparison. If the compander gain is above the predetermined threshold, the chopper is turned off. The device incorporates an automatic chopper and a duty cycle shaper to provide smooth ramp up of the automatic chopper, eliminating chopper turn on sounds. |
