1. A method for converting speech to text, comprising the steps of: receiving a digital signal comprising a recorded spoken input; obtaining at least one measurement of said digital signal, the measurement comprising a first measured portion of said recorded spoken input and a second measured portion of said recorded spoken input; identifying at least one characteristic of said digital signal by comparing said first measured portion of said recorded spoken input to a first database of digital audio signal characteristics; transcribing said first measured portion of said recorded spoken input using said at least one characteristic of said digital signal to create an initial transcription; backfilling said first database of digital audio signal characteristics with at least one characteristic from a second database of digital audio signal characteristics; identifying a second characteristic of said digital signal by comparing said second measured portion of said digital signal to said backfilled first database of digital audio signal characteristics; transcribing said second measured portion of said recorded spoken input using said second characteristic of said digital signal.