Measurement and Optimization

IIR Room Tuning | FIR Designer Case Study

Room tuning using IIR filters commonly involves taking live, continuous measurements while adjusting processor settings. Alternatively, it can be an iterative process of measuring and filter adjustment. When FIR-capable amplifiers & processors are involved, room tuning can be optimized further by using the same loudspeaker measurements to develop custom FIR …
Measurement and Optimization

Audio FIR Filtering

Although not a new technology, manufacturers are increasingly including FIR filtering in loudspeaker processors and DSP based amplifiers due to the significant increase in performance-versus-cost of microprocessors and DSP hardware. The advantages of FIR filtering include more arbitrary and fine control of a filter’s magnitude and phase characteristics, independent control …
Power

Power Distribution Part 3 – Branch Circuit Distros

As the size of the event increases, so usually do the power requirements. [URL=”http://soundforums.net/content/2886-Power-Distribution-Part-2-The-Poor-Man-s-Distro”]The Poor Man’s Distro concept[/URL] can help manage up to about 4 circuits sourced from around the room – assuming you can find that many, but that’s about it. Even finding two or three circuits may require long …
Power

Understanding Power Consumption, Part 2

[B]This is the second half of the article, split due to post length limits. The first part is here: [/B][URL=”https://soundforums.net/entries/1191-Understanding-Power-Consumption-Part-1″]Understanding Power Consumption, Part 1[/URL][B] Case study: Allen & Heath GLD80 mixing console[/B] A&H’s datasheet lists the maximum power consumption of the GLD80 surface at 95w, and the AR-2412 stage box …