Filter brewing for the Soekris R2R

[Peterma]

not blaming anyone

 

[EugenKo]

Hello!

I haven’t updated my DAM1021 for a long time, I have installed firmware 1.06 and filters from #1352 (oneoclock).

What is the most interesting filters set now?

Thank!

 

[living sounds]

TNT, would you mind posting frequency and impulse response graphs for you filters in posts 1633 and 1833?

Are there similar graphices for the 128DP filter?

Also, someone did THD simulations or measurements with different filters, has anyone done comparisons in this regard for the more recent favourites?

 

[analog_sa]

filters from #1352 (oneoclock).

Still the best imho.

 

[TNT]

TNT, would you mind posting frequency and impulse response graphs for you filters in posts 1633 and 1833?

Are there similar graphices for the 128DP filter?

Also, someone did THD simulations or measurements with different filters, has anyone done comparisons in this regard for the more recent favourites?

I can. But I will take some time. Where where the measurements you mention posted?

//

 

[TNT]

Still the best imho.

The F6 by Paul? For all Fs?

//

 

[baten]

Also, someone did THD simulations or measurements with different filters, has anyone done comparisons in this regard for the more recent favourites?

Interesting. Where did you see this?

 

[living sounds]

I can. But I will take some time. Where where the measurements you mention posted?

//

I don't remember if it was here or somewhere else. But someone had posted THD frequency curves for different filters.

 

[analog_sa]

The F6 by Paul? For all Fs?

//

Yes.

 

[analog_sa]

Also, someone did THD simulations or measurements with different filters

Really? THD? Simulations sounds very unlikely. Not sure in what way filters would affect thd.

 

[TNT]

I think he is mixing it up with the power feeding frenzy in the 1021 original thread!?

//

 

[analog_sa]

Yup, that makes sense.

 

[living sounds]

Really? THD? Simulations sounds very unlikely. Not sure in what way filters would affect thd.

I wouldn't have expected it to make a difference either, in fact it doesn't make much sense to me. But nevertheless there were graphs, and I can't remember if those were simulations or measurements.

 

[living sounds]

Found it, look at posts #891 and following.

 

[living sounds]

Does anyone know if Paul's latest filters had the DC filter turned on or off? Is there a way to decode the SKR file into text (I guess not)?

 

[TNT]

Use the command: filters

and have a look. If there is one it will listed.

//

 

[analog_sa]

Found it, look at posts #891 and following.

These are measurements, not simulations. They are also based on a rather unorthodox methodology where thd is inferred from the impulse response to a single sample.

 

[TNT]

These are clearly made by Fuzzmeasure on a Mac. It uses a sweep as input.

I'm in the rolling credits in the "About" window ;-) so I have used it...

//

 

[living sounds]

More measurements here:

Filter brewing for the Soekris R2R

 

[living sounds]

These are measurements, not simulations. They are also based on a rather unorthodox methodology where thd is inferred from the impulse response to a single sample.

I wrote "and following". There are also purely calculated distortion figures:

Filter brewing for the Soekris R2R