1. An adaptive audio signal compression computer system comprising: means for storing selectable audio response filter data representing a plurality of predetermined ear response data; means, operatively coupled to the means for storing, for adaptively compressing the range of volumes of an input audio stream by selecting the selectable audio response filter data for use in varying audio signal volume compression parameters; and wherein the means for adaptively compressing the range of volumes is responsive to audio listening room environment data and determines a volume compression threshold level based on the audio listening room environment data.