Webrtc回声消除模式(Aecm)屏蔽适宜噪音(CNG)

#if defined(WEBRTC_ANDROID) || defined(WEBRTC_IOS)static const EcModes kDefaultEcMode = kEcAecm;#elsestatic const EcModes kDefaultEcMode = kEcAec;#endif

// EC modesenum EcModes                   // type of Echo Control{    kEcUnchanged = 0,          // previously set mode    kEcDefault,                // platform default    kEcConference,             // conferencing default (aggressive AEC)    kEcAec,                    // Acoustic Echo Cancellation    kEcAecm,                   // AEC mobile};

// Modifies settings for the AEC designed for mobile devices (AECM).virtual int SetAecmMode(AecmModes mode = kAecmSpeakerphone,                        bool enableCNG = true) = 0;