FIR-ward Thinking: Examining Finite Impulse Response Filtering In Sound Reinforcement

[more10]

FIR-ward Thinking: Examining Finite Impulse Response Filtering In Sound Reinforcement Systems @ prosoundweb.com (http://www.prosoundweb.com/article/fir-ward_thinking_examining_finite_impulse_response_fi ltering_in_sound_rein/live)


This is part 1 of a series that will examine the use of FIR filters in sound reinforcement systems. There are plenty of textbooks and resources on the Internet that delve into the mathematics and the deep theory.

That’s a bottomless well that can never be exhausted. In this series I’ll use a broad brush stroke to give some “take-aways” on FIR filter theory along with practical implementations and examples. These will hopefully prove beneficial for understanding FIRs and integrating FIR filter technology into your projects.

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All articles at prosoundweb by Pat Brown (http://www.prosoundweb.com/tags/tag/pat+brown). If he writes more about FIR it will turn up there.

[Mostlydiy]

Interesting read. Will look forward to his next publication.

/Mostly

[pos]

Following up on his FIR series, here is one featuring rePhase :)
http://www.prosoundweb.com/article//a_useful_tool_creating_applying_fir_filters/

[grumpy]

I currently have no way to do any test measurements as I'm going
to need some analog output cards, but it does appear that the BSS-BLU
series does have some FIR (50 coefficient) capability (old news?).

edit: 50 is just the default. Looking into this more (any many years ago
in my dusty educational memory), I realized 50 would be almost useless.
Downloaded rePhase (nice) and may usefully be able to play with this
now. Four filters with 2048 coefficients (taps?) bumps up 96KHz
resource usage to less than 80% and the rePhase response (in program)
still looks reasonable.