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In this episode of Sound Design Live I talk with sound engineer, producer, and trainer on network technology and Lake processing, Bodo Felusch. We discuss practicing using your audio analyzer at home without a PA, identifying a comb filter, and the importance of understanding the network your audio is traveling over.
I ask:
- What is your favorite test track for checking crossover alignment between main and sub?
- How did you get your first job in audio?
- In your exercises for FFT (The Ultimate System Tuning Homework) you suggest that I shouldn’t be wasting my client’s time learning how to use my audio analyzer in the field, but this is one of the biggest challenges with learning system tuning, how do I practice at home when I don’t have a PA?
- One of the very first things I learned from your FFT self-guided homework is that I can find the frequency and the time period of a comb filter by 1 / Frequency of first dip / 2. So if I find the first dip at 50Hz, that would be (1 / 50Hz / 2 = 10ms. How does this information help me in my sound system setup?
- On coherence you say, “Now you don’t have friends in catering because your measurement signal is too loud.” How loud does my measurement signal need to be? Or how quiet can I make it so that I don’t loose friends in catering?
- What is a Lake Controller? What is one of the most common mistakes people make who are new to Lake Controllers?
- Why do I need to understand audio networks? Isn’t Dante and AVB just another fad that will go away in a few years?

Technology fails and you need to make decisions, fast, and fix it. Without knowing what is going on in the network, you will fail.
Bodo Felusch
Notes
- All music in this podcast by Bodo Felusch.
- Hardware: Lake processor
- CRE = Chief Redundant Engineer
- Books: Factfullness from Hans Rosling
- Gapminder Test
- Quotes
- Now you don’t have friends in catering because your measurement signal is too loud.
- Do your homework at home.
- If you measure 10dB above the noise floor you will have a 3dB ripple. If you measure 20dB above you will have a 1dB ripple.
- Once you transport your show relevant signals over IT, and only IT, it makes sense that you know how a network works. Without knowing what is going on with the network, you will fail.
- We could both be replaced in an hour, and that’s good. There is no superstar in audio.
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