1. A system for audio processing comprising: an initial background statistical model system operating on a processor and configured to generate an initial background statistical model using an initial sample of audio data; a parameter computation system operating on the processor and configured to generate parametric data for the initial sample of audio data; a background statistics computation system operating on the processor and configured to receive the parametric data and to generate preliminary background statistics for determining whether speech has been detected; and a first speech detection system operating on the processor and configured to determine whether speech was present in the initial sample of audio data using the preliminary background statistics.