Audio waveform data can be received from a plurality of client devices. The audio waveform data for each client device can be generated by sampling at least one portion of an audio stream received by the respective client device. The audio waveform data received from the plurality of client devices can be compared. Based on the comparison, which of the plurality of client devices are located in a same location can be determined. Further, based on the comparison, which of the plurality of client devices located in the same location are to mute their respective input audio transducers can be determined, and an indicator indicating to the client devices to mute their respective input audio transducers can be communicated to the client devices that are determined to mute their respective input audio transducers.