Systems, methods, and apparatus for gain factor attenuation

摘要

A method of signal processing according to one embodiment includes calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal, calculating an envelope of a second signal that is based on a high-frequency portion of the speech signal, and calculating a plurality of gain factor values according to a time-varying relation between the envelopes of the first and second signal. The method includes attenuating, based on a variation over time of a relation between the envelopes of the first and second signals, at least one of the plurality of gain factor values. In one example, the variation over time of a relation between the envelopes is indicated by at least one distance among the plurality of gain factor values.

主权项

1. A method of signal processing, said method being implemented by a wireless communications device, the method comprising:
calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal; calculating an envelope of a second signal that is based on a high-frequency portion of the speech signal; calculating a plurality of gain factor values according to a time-varying relation between the calculated envelopes, wherein each of the plurality of gain factor values is based on a calculated value of the time-varying relation over a different corresponding time period, and wherein the time-varying relation is one among a difference between the calculated envelopes and a ratio between the calculated envelopes; calculating a value of a change in a relation between the calculated envelopes, wherein the change is a change over time; and based on the calculated value of the change, attenuating at least one of the plurality of gain factor values.