The free version includes most of the core features of Echo, including the ability to share comments on Twitter and Facebook, nested replies, moderation tools, and customization.
IntroductionIn the communication systems, echo and noise will seriously affect speech communication quality, such as IP telephone, videophone and hand-free digital cell phone systems etc.
引言在通信系统中，例如IP电话、可视电话及免提数字蜂窝电话系统中，回声和噪声会严重影响通信质量。
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In this paper, we describe an application of digital speech processing chip FM1073 to improve the performance of acoustic echo cancellation in the Bluetooth hands-free system.