LOW FREQUENCY MANAGEMENT FOR MULTICHANNEL SOUND REPRODUCTION SYSTEMS

The present invention relates generally to sound reproduction systems and methods and more specifically to the reproduction of low-frequency signal components recorded in a Low Frequency Effects (LFE) channel. According to the invention there is provided a system comprising: n input channels (1, 2, 3) for receiving in multichannel sound signals; at least one input channel (4) for receiving a low-frequency effects (LFE) signal; n output channels (13, 14, 15) for providing signals from the system to respective transducers, such as loudspeakers (31, 32, 33); for each of said input channels (I1 2, 3) high-pass filter means (5, 6, 7) receiving a signal from said respective input channel (I, 2, 3) and providing a corresponding high-pass filtered signal (22, 23, 24) to a respective second summing means (16, 17, 18); for each of said input channels (1, 2, 3) low-pass filter means (8, 9, 10) receiving a signal from said respective input channel (1, 2, 3) and providing a corresponding low-pass filtered signal to first summing means (12); for said at least one input channel (4) for receiving a low frequency effects (LFE) signal, gain means (I I) receiving said low frequency effects (LFE) signal and providing an output signal (35) to said first summing means (12); for each of said output channels (13, 14, 15) LFE signal processing means (19, 20, 21) each receiving a signal from said first summing means (12) and each providing a processed output signal to said respective second summing means (16, 17, 18); where each of said second summing means (16, 17, 18) has an output connected to each of said output channels (13, 14, 15); whereby each of said output channels (13, 14, 15) provides processed output signals for each of said transducers, such as loudspeakers (31, 32, 33), respectively.