REW Convolution on MacOS for MiniDSP

[Super Panda]

Hello, first post.

Today I was working on REW as per OCA's instructions here:

A few observations on making these filters on MacOS for MiniDSP, please correct me if I'm wrong. I'm decently technically competent but new to REW and DSP.
I'm running a 2.1 system with a MiniDSP Flex Eight into a DSP-sub (DSP settings bypassed obviously) and an integrated into passive speakers.

First, the MiniDSP seems to only accept .bin files for FIR and REW has no export options for such, only .wav. Now, using Finder, I can replace the .wav extension with .bin and choose 1k sample count (MiniDSP supports up to 4096 taps in total, or 2048 per channel). A 2k sample count exports 2060 taps which exceeds MiniDSP's max tap allocation. Doing this, I was able to load the file onto the MiniDSP with the result that my sub, which I had inadvertently forgotten to switch off, started blaring a very high SPL noise / rumble. This was obviously not the right approach.

Second, the MiniDSP supports a manual approach to FIR filtering via text field. Exporting the impulse response as text from REW generates a ~1,5 MB file with ~500k lines (or taps?) which again exceeds the MiniDSP's max supported number of taps and there's no way to select a lower tap count upon text file generation.

Thanks in advance for any possible input

 

[reddress]

Thank you for sharing your knowledge in this video!

 

[ddude003]

You might be able to export from REW and import into rePhase... Try https://rephase.org...
I seem to recall that you can adjust Taps as well as some nifty trix...

In this video by OCA aka serko70, here on AVNirvana, there is a part where OCA describes exporting from REW and importing into rePhase, in this case for phase adjustment, and can also get you to TAPs adjustment/management...

And there is a nice tutorial/instructions written for you to follow step by step in the comments section of this video on youtube...

There is also some discussion on the miniDSP forums about this area of TAPs management/adjustment with rePhase...

 

[Mike0815]

Dream mode ON:
I wish Serkan could script these steps from his above video / supplementary tutorial (https://drive.google.com/file/d/17BwTGv933w4id3B3PFHy2zjyijtgZLDX/view?usp=sharing&v=5YcH7j2-L1Y) like he did in his work for Denon/Marantz Audyssey receivers (Evo/Acoustica/etc.).
Repeating this manually for 14 speakers in my home cinema installation would take (me) forever otherwise. (The rephase part would still need to be handled manually but I think this would be doable.)
I route all my speaker channels through CamillaDSP anyway so convolution / processing limits do not exist.

 

[ddude003]

@Super Panda Oh, look at that... Last lines of the last page... "You can use the new “Trim IR Windows” feature under “Measurement Actions” to decrease the number of taps of the final convolution filters you generated if you want faster filters." LOL... I totally forgot...