Speex DSP Extension
SpeexDSP is a patent-free, Open Source/Free Software DSP library that is derived from the Speex library. You can find more information at https://www.speex.org.
The SpeexDSP Extension provides the following audio nodes for a Switchboard SDK audio graph:
|EchoCancellerNode||Removes acoustic echo from microphone signal.|
|PreprocessorNode||Applies automatic gain control (AGC) and noise suppression on the voice signal.|