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User Guide for Cisco Show and Share 5.3.x
Chapter 4 Play, Comment, Tag, and Share Videos
Procedures
About Pulse Speaker Identification
The Pulse engine can identify different speakers within videos. It does this by identifying unique
voiceprints.
Speaker identification is a learned process. At first, voiceprints are assigned a generic speaker tag, such
as Speaker 1. Authors can then use the Cisco Show and Share editing tools to associate voiceprints with
specific speakers. The speaker names are taken from the Cisco Show and Share registered users list.
Authors cannot assign names outside of the user pool.
Once a voiceprint has been associated with a specific user, subsequent videos uploaded with that
voiceprint automatically show the speaker name.
The colored areas in the video timeline, below, mark each instance of a speaker in the video. This video
has a single speaker—the gray areas between the yellow bars indicate where no one is speaking.
The accuracy of the Pulse speaker identification depends upon the quality of the recorded audio and
whether or not there is a lot of background noise in the audio track. Sometimes a single speaker may
show up as named and as a generic speaker in the same video because of background noise or changes
in recording quality. The more times a speaker is identified by a video author, the more accurate the
system becomes.
See Label Unidentified Speakers, page 5-12, for information about how to assign speakers to
unidentified voiceprints.