Enhanced Audio Editing - Search, Find, Delete

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I produce several hundred videos a year and the majority of my editing time is spent making marginal speakers sound great. That process is accomplished by removing the “ums and ahs” speakers use between thoughts (and other places). Having looked at thousands of audio signatures I found that the ums and ahs for a given speaker have strikingly similar audio signatures. I would like to be able to highlight an audio signature and have Camtasia search and find that same signature in the audio track. I would then like the option to delete or continue on to the next find. When I delete a signature I have found that synchronization between video track and audio track is seldom a problem since the duration of the event is very short. This process would be similar to the search/find /replace function in Word and other software programs and save me hours of editing.
PS Right now I work with Camtasia 7 but if TechSmith gives me back full audio wave form I will start working with 8.