| 摘要 |
An adaptive echo canceller with a limiter introduced into the reference path for modeling a non-linear limiting or clipping effect introduced by a CODEC. The adaptive echo cancellation algorithm is not required to compensate for the non-linearity and therefore converges quickly to provide accurate echo cancellation. The echo canceller may be used in speaker phones characterized by large loop gains which can quickly drive the CODECs beyond their fixed dynamic ranges.
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