8. The computer-implemented method of claim 7 , wherein determining the degree of correlation includes: for each audio recording in the set of identified call series, determining whether the recording is associated with at least one of a predetermined set of content categories.
7. The computer-implemented method of claim 1 , wherein processing the representation of the set of one or more call series to generate an analysis report includes: determining a degree of correlation of the content of a first audio recording in each identified call series with the content of subsequent audio recordings in the identified call series.