2. The method of claim 1 , wherein the act of obtaining combined acoustic data comprises an act of forming a composite buffer area comprising the first acoustic data prepended to the second acoustic data.
2. The method of claim 1 , wherein the act of obtaining combined acoustic data comprises an act of forming a composite buffer area comprising the first acoustic data prepended to the second acoustic data. 3. The method of claim 2 , wherein: the composite buffer area contains, at a start of the first acoustic data prepended to the second acoustic data, oldest acoustic data in the circular buffer; acoustic data recorded in the circular buffer immediately before the indication that the speech recognition system is being addressed ends the first acoustic data; and in the composite buffer area, the acoustic data recorded in the circular buffer immediately before the indication that the speech recognition system is being addressed is contiguous in memory with acoustic data which is recorded in the second buffer immediately following the indication that the speech recognition system is being addressed.