A computer-implemented method for real-time modification of notification tones to distinguish an intended recipient of a notification tone is disclosed. The computer-implemented method includes monitoring an audio stream of an online conference for one or more audio notification tones. The computer-implemented method further includes detecting that a notification tone generated outside of the online conference matches the notification tone of an application or user device associated with two or more participants of the online conference. The computer-implemented method further includes responsive to detecting that the notification tone matches the notification tone of an application or user device associated with two or more participants of the online conference, generating an ameliorative action associated with the notification tone.