A method for modifying noise captured during a conference at each endpoint of a set of at least two endpoints of a teleconferencing system, said method including the steps of: (a) generating first noise samples indicative of noise captured during the conference at a first one of the endpoints and second noise samples indicative of noise captured during the conference at a second one of the endpoints, the first noise samples being a first subset of a set of first frames of audio samples captured at the first one of the endpoints during the conference, each frame of the first subset of the set of first frames being indicative of noise but not a significant level of speech, and each frame of a second subset of the set of first frames being indicative of speech uttered by a conference participant at the first one of the endpoints, and the second noise samples being a first subset of a set of second frames of audio samples captured at the second one of the endpoints during the conference, each frame of the first subset of the set of second frames being indicative of noise but not a significant level of speech, and each frame of a second subset of the set of second frames being indicative of speech uttered by a conference participant at the second one of the endpoints; (b) modifying the first noise samples to generate first modified noise samples indicative of modified noise having a frequency-amplitude spectrum which matches a target spectrum, and at least one spatial property which matches at least one target spatial property, and modifying the second noise samples to generate second modified noise samples indicative of modified noise having a frequency-amplitude spectrum which matches the target spectrum, and at least one spatial property which matches the target spatial property; and (c) generating first encoded audio at the first one of the endpoints by encoding the first modified noise samples and encoding each frame of the second subset of the set of first frames, and generating second encoded audio at the second one of the endpoints by encoding the second modified noise samples and encoding each frame of the second subset of the second frames. (a) generating first noise samples indicative of noise captured during the conference at a first one of the endpoints and second noise samples indicative of noise captured during the conference at a second one of the endpoints, the first noise samples being a first subset of a set of first frames of audio samples captured at the first one of the endpoints during the conference, each frame of the first subset of the set of first frames being indicative of noise but not a significant level of speech, and each frame of a second subset of the set of first frames being indicative of speech uttered by a conference participant at the first one of the endpoints, and the second noise samples being a first subset of a set of second frames of audio samples captured at the second one of the endpoints during the conference, each frame of the first subset of the set of second frames being indicative of noise but not a significant level of speech, and each frame of a second subset of the set of second frames being indicative of speech uttered by a conference participant at the second one of the endpoints; (b) modifying the first noise samples to generate first modified noise samples indicative of modified noise having a frequency-amplitude spectrum which matches a target spectrum, and at least one spatial property which matches at least one target spatial property, and modifying the second noise samples to generate second modified noise samples indicative of modified noise having a frequency-amplitude spectrum which matches the target spectrum, and at least one spatial property which matches the target spatial property; and (c) generating first encoded audio at the first one of the endpoints by encoding the first modified noise samples and encoding each frame of the second subset of the set of first frames, and generating second encoded audio at the second one of the endpoints by encoding the second modified noise samples and encoding each frame of the second subset of the second frames.