Analog or Digital Filters?
Home What are they? Active vs Passive Adjustable Crossover Analog or Digital? Frequencies, Slopes Filter Topologies FR Correction   < Tech << T-Line Speakers		More and more companies are offering digital processors for sound systems. Some of these units can perform very complex operations and can replace crossover, equalizer, time delay etc. and do all these operations in one unit. Digital processors of this type can do everything that analog crossovers can do and even more. They have superior sound quality (some of them) and superior noise characteristics. The only disadvantage is high cost in comparison to analog units. Some people argue about sound quality of the digital sound equipment, but there is nothing to talk about. At the early stages, when digital sound was just emerging, sound quality was questionable, but as expected, engineers found new ways and built better and better units each year. This is no different from any other technical advances. We also plan to introduce digital products in our line and they will be adjustable! Digital filters are adjustable and they can be adjusted without any changes in hardware (components). All changes are made through a serial cable from the computer keyboard, using the screen as a front panel of the unit. Crossover itself will not have any buttons, knobs or dials, just a black box hidden somewhere. It may sound a little funny, but yes, we will have adjustable crossover even though we are not in favor of such a thing. Actually, such crossover will not be field adjustable, it will be more like semi-adjustable and will be used for permanent installations. Such sound systems are installed by professional companies, which have all the necessary knowledge and instruments for complex acoustical measurements. Only a professional installer can guarantee the results. Another application for adjustable digital crossover is a design of analog crossovers. You can use a digital crossover for finding the best crossover points, time and phase correction values, frequency response corrections, etc. After finding optimal values for all system parameters, you can use this data for building non-adjustable analog crossover with exact specifications for your speaker system.