1. A system for indicating audience engagement, the system comprising: a server, including processing circuitry and memory, the processing circuitry to: send speech from a speaker to be played for a plurality of members of an audience; receive audience reaction information, for the plurality of members of the audience, from a plurality of sensors, the audience reaction information captured by the plurality of sensors while the speech is playing for the plurality of members of the audience; process the audience reaction information to aggregate the audience reaction information; determine, using the processed information, an engagement factor; send an aggregated engagement level indicator to a speaker device, the aggregated engagement level indicator based on the engagement factor and indicating overall engagement of the audience to the speech; save the processed information and the speech to the memory; and correlate audio tones or key words in the speech with emotional responses in the processed information, wherein to correlate includes using a time offset to account for a transmission delay.