1. An apparatus, comprising: a mixer for mixing input streams received from participants of a conference call and distributing mixed streams to the participants, the mixer provides a first stream at a first volume to participants of the conference call having a sub-group meeting and provides a second stream at a second volume that is lower than the first volume to remaining participants of the conference call; a speech to text converter operatively coupled with the mixer; the speech to text converter is operable to detect whether a remaining participant of the conference call uttered a predefined keyword; and the speech to text converter is operable to issue an alert to a participant in the sub-group meeting responsive to detecting the predefined keyword, wherein the predefined keyword detected in the second stream is played as the alert at a third volume that is higher than the second volume.
1. An apparatus, comprising: a mixer for mixing input streams received from participants of a conference call and distributing mixed streams to the participants, the mixer provides a first stream at a first volume to participants of the conference call having a sub-group meeting and provides a second stream at a second volume that is lower than the first volume to remaining participants of the conference call; a speech to text converter operatively coupled with the mixer; the speech to text converter is operable to detect whether a remaining participant of the conference call uttered a predefined keyword; and the speech to text converter is operable to issue an alert to a participant in the sub-group meeting responsive to detecting the predefined keyword, wherein the predefined keyword detected in the second stream is played as the alert at a third volume that is higher than the second volume. 3. The apparatus set forth in claim 1 , wherein the keyword is a group affiliation associated with a selected subset of participants of the sub-group meeting; and wherein the alert is sent to members of the selected subset of participants.