Patent ID: 8194874

Claim:
A method for smoothing acoustic magnitude response of an audio reproduction system in a room that preserves subjective impression of transient response and dynamics, comprising: a) selecting an in-room magnitude response passband lower frequency and an in-room magnitude response passband upper frequency; b) placing subwoofer and a user-positionable microphone in a room; c) energizing said subwoofer with an audio signal within said magnitude response passband and generating an acoustic output signal within said room; d) performing an in-room acoustic magnitude response analysis and determining whether an addressable room resonance induced peak associated with said acoustic output signal is detectable with said microphone, wherein a room resonance induced peak is regarded as addressable if said peak's magnitude exceeds a mean level through a passband or a prescribed sub-passband; e) and if an addressable room resonance induced peak is detected, then filtering a replica of the audio signal at the room resonance induced peak; and f) adding the filtered replica signal with the audio signal, whereby smoothing the room resonance induced peak is achieved, such that a subjective impression of transient response and dynamics of the audio signal are preserved.