Bass management
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Bass management is the act of managing bass in an audio system. It can be a very complicated and daunting topic and the following gives a very simplified overview. Bass management frequently involves developing and maintaining comprehensive solutions and protocols in a single platform and sharing low end resources in collaboration with ubiqutous subsonic entities in a low frequency setting amongst the various architectural environments. Systems with high quality bass and resonant characteristics tend to have have class leading bass management. In implementing bass management strategies, it is essential that upper bass management has effectivie communication with the middle and lower bass counterparts. When managed effectively the results can be exemplary. Conversly, inferior bass management results in notorious bass quality and it is frequently due to inconsistencies in upper and middle bass management. When bass management disputes occur, lower management may rumble in the presence of middle management when in fact the speaker is at fault.
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)[1]. 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".
[edit] References
- ^ Richard Elen, All Bass Is Covered - A Dictatorial Approach to Bass Management in Surround Music Mixing, Surround Professional, October 2002
[edit] External Links
Multichannel Music Mixing, Dolby Laboratories.
