Patent ID: 7233673

Claim:
A processor for providing in-line early reflection enhancement in a sound system, the processor comprising: multiple inputs adapted for receiving multiple input signals from one or more microphones positioned close to one or more sound sources within a room or other space so as to detect predominantly direct sound; an early reflection generation stage which has a finite impulse response and which without internal feedback generates a number of delayed discrete reproductions of the input signals, the early reflection generation stage comprising at least one cross-coupling matrix which is an orthonormal cross-coupling matrix, and the early reflection generation stage having a unitary transfer function matrix such that the processor has an overall power gain that is constant with frequency to improve stability in the sound system, whereby the stability of the sound system in relation to said delayed discrete reproductions of the microphone signals is independent of delay times and amplitudes in the early reflection generation stage; and multiple outputs adapted for outputting the delayed discrete reproductions of the microphone signals to a number of loudspeakers placed to broadcast said delayed discrete reproductions of the microphone signals into the room or other space.