A method for detecting and reducing effects of potential incongruence in a video conference, wherein the video conference video capture is provided by a camera of a video conferencing system and audio capture is provided by an audio device, the method comprising: capturing, by the camera, video images of a conference room; identifying, by a processor of the video conferencing system, locations of each of a plurality of participants within an image plane of a video image of the captured video images; identifying, by the video conferencing system, a location of the audio device within the conference room; calculating, by the processor using face and shape detection, a location of a center point of each identified participant in a horizontal image plane that includes the audio device; determining, by the processor, a virtual camera position in said horizontal image plane, by calculating a perpendicular line down from the camera to the horizontal image plane, wherein the camera is located at least a predetermined height above the horizontal image plane; calculating, by the processor, a region of congruence bounded by key parallax lines (515, 520, 525) and containing the virtual camera position and not including any other parallax lines, wherein the region of congruence represents a range of placements of the audio device in which no parallax inversion of the participants occurs, the key parallax lines comprising at least two parallax lines out of all parallax lines, a parallax line being defined as a line connecting the center points of a pair of identified participants such that they represent a line in said horizontal image plane that includes the audio device; comparing the identified location of the audio device to the calculated region of congruence; and when the audio device location is not within the region of congruence, adjusting, by the processor, audio captured by the audio device, the adjusting comprising adapting a captured audio signal to reduce effects of incongruence when the captured audio is replayed at a far end of the video conference. capturing, by the camera, video images of a conference room; identifying, by a processor of the video conferencing system, locations of each of a plurality of participants within an image plane of a video image of the captured video images; identifying, by the video conferencing system, a location of the audio device within the conference room; calculating, by the processor using face and shape detection, a location of a center point of each identified participant in a horizontal image plane that includes the audio device; determining, by the processor, a virtual camera position in said horizontal image plane, by calculating a perpendicular line down from the camera to the horizontal image plane, wherein the camera is located at least a predetermined height above the horizontal image plane; calculating, by the processor, a region of congruence bounded by key parallax lines (515, 520, 525) and containing the virtual camera position and not including any other parallax lines, wherein the region of congruence represents a range of placements of the audio device in which no parallax inversion of the participants occurs, the key parallax lines comprising at least two parallax lines out of all parallax lines, a parallax line being defined as a line connecting the center points of a pair of identified participants such that they represent a line in said horizontal image plane that includes the audio device; comparing the identified location of the audio device to the calculated region of congruence; and when the audio device location is not within the region of congruence, adjusting, by the processor, audio captured by the audio device, the adjusting comprising adapting a captured audio signal to reduce effects of incongruence when the captured audio is replayed at a far end of the video conference.