Invention Grant
US09503815B2 Perceptual echo gate approach and design for improved echo control to support higher audio and conversational quality 有权
感知回波门方法和设计,以改善回声控制,以支持更高的音频和会话质量

Perceptual echo gate approach and design for improved echo control to support higher audio and conversational quality
Abstract:
To address issues with present echo gate control, a method and apparatus for more intelligently operating an echo gate is described herein. In particular, the decision of whether to mute an uplink signal, or not, is formulated herein as primarily a perceptual decision based on an appropriate analysis of the perceptual interaction of the current residual echo and the current near-end signal(s). By doing so, the application of muting through an echo gate may be minimized and/or more appropriately engaged. This will lead to fewer dropouts and muting of speech onsets and offsets 1) during periods such as double-talk or 2) during periods of downlink playback in the presence of low near-end signal levels, two cases of particular importance.
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