Bass management

The fundamental principle of bass management in surround sound replay systems is that bass content in the incoming signal, irrespective of channel, should be directed only to loudspeakers capable of handling it, whether the latter are the main system loudspeakers or one or more special low-frequency speakers (subwoofers) [Richard Elen, " [http://www.ambisonic.net/bassmgt1.html All Bass Is Covered - A Dictatorial Approach to Bass Management in Surround Music Mixing] ", Surround Professional, October 2002] , sometimes called LFE Crossover. There are notation differences between the pre-bass-managed signal and once it has passed through bass manager. For example, in 5.1, the transmitted channels are referred to as L(eft), R(ight), C(enter), L(ow )F(requency)E(effects), S(urround)L(eft), and S(urround)R(ight). However, once passing through the bass manager, they are referred to as L(eft), R(ight), C(enter), Sub(woofer), S(urround)L(eft), and S(urround)R(ight). The bass management system may direct bass to one or more subwoofers (if present) from "any" channel, not simply the content of the LFE: the LFE is not the "subwoofer channel".

References

External links

* [http://www.dolby.com/assets/pdf/tech_library/4_Multichannel_Music_Mixing.pdf Multichannel Music Mixing] , Dolby Laboratories.