Lumin T2 + Roon Setup - Part 2

[wklie (Peter Lie)]

@Matt_Posta

1. Rate Conversion Filter - what is this and why would one want Precise or Smooth or Linear v Minimal?

DSP SRC Filters

This was a pretty technical question, so I’m going to keep the answers at a pretty technical level. A lot could be written on the tradeoffs involved, reasoning behind them, why some of the choices below are valid for music listening (but wouldn’t be for other applications), etc. And there is a lot of basic knowledge of how DSP and sample rate conversion works that would be hard to convey in a short post. There is a fair bit of religion in this space to contend with in this area, and we do not r…

@Matt_Posta

2. Sigma-Delta Modulator - what is this and why woud one want 5th v 7th and Clans v Non-clans? Does 5 v 7 correlate to the number of frequency bands?

Can someone explain the CLANS noise shaper?

CLANS stands for “Closed Loop Analysis of Noise Shapers”. Inside the Sigma-Delta modulator–which converts multi-bit PCM to a 1-bit DSD signal–there is a component called a “noise shaper”. This is comprised mainly of a filter which pushes quantization noise inherent to 1-bit systems out of the audible range. Every system which produces a DSD stream (whether it be in software or in the mastering environment) must do some form of noise shaping. “Traditionally” designed noise shapers are essential…

@Matt_Posta

3. DSD to PCM Filter - why is a low pass filter necessary? In my setup, can I just go unfiltered? Wouldn’t my Wilson’s already address low pass filtering with their internal hardware (e.g., totally speaking out of school here but, capaciters, transisters, etc)?

DSD to PCM Settings

@Matt_Posta

4. Headroom Management - Is this essentially equivalent to a volume control?

MUSE - Precision Audio Control: Headroom Management

@Matt_Posta

5. Parametric EQ

Don’t do it unless you are doing room correction.

Happy New Year!