Recent content by Quickmcj

Update for anybody encountering this: This is something to do with linux (pipewire, drivers, my configs, something) and maybe the interaction with REW. I cannot provoke the error in REW running camilladsp on windows with same filters and hardware.

This was done super quick, so might be error prone, but I do not see dropouts in the averaged plot from RTA (doing sweep loop from around 1kHz to 3kHz). I can only see the problem with a regular single sweep measurement and if I gate strongly to remove the room. Both plots in attached mdat file.

Hi John Will investigate dropouts. I have several installs of REW on different systems for convenience, I think that one is from my laptop (I am just viewing the measurements there). Edit: I am running 5.20.9 on main system, I think I downgraded to use the old GUI framework at some point, not...

Hi Trying to debug this issue, not sure where it stems from (yet). If you look at the two pictures you can see that the measurements has reoccurring oscillations, with a frequency separation of 2x/0.5x. It is easily identifiable in the impulse response, if these errors occur. Most, but not all...

I would prefer the purist way (ALSA) but I just do not got the time or chops for it, it seems :) After a short "messing with linux audio" recuperation period, I might give it a go again. The guy behind PW seems extremely capable, so I am currently placing my trust in him. That said, I do see...

Yes I looked at HLC some time ago, but missed that it is actually resampling the FIR filters on the fly. I do prefer using and supporting CamillaDSP. I am OK with resampling everything as long as quality is high (https://src.infinitewave.ca/) If current setup create new problems, I might switch...

Hi phofman Many thanks for your valuable contributions to multiple important topics, on many many different forums online through the years. There is no way people would learn things like these as fast, if your contributions where not there to find. Also thanks for your contributions to...

Hi John, thanks for answering. This would be purely for compatibility and convenience, as people run their systems at many different samplerates. If you use the Umik 1, you would need to reconfigure a number of configuration files for pipewire and Camilladsp, to change sample frequency on the...

Hi I have tried searching on Google, REW Help section, Minidsp and the forums with no luck. I use pipewire to resample every output to 192kHz at the moment (Will likely use 96kHz later on). When using the UMIK 1, it has a locked sampling frequency of 48kHz. As the difference is an exact...

Hi John Again thank you for fantastic software and support through so many years. REW is now a very advanced tool, and can do so many different things, its pretty daunting to use, for new users. It will be very easy for new users to make mistakes along the way, never achieving what they are...

That is amazing John, thank you very much, will get installed right away. (Edit: Installed, working wonderfully, thanks a lot) Kind regards Michael

I can fiddle around with the mic and the IDs to likely have REW find it, I will work that out. It does see it in some ways, and it works just fine it seems. I have added some pictures so you can see what is going on, but it is no biggie at all. " As this is a low bandwidth signal the...

Hi John I have attached the mdat with input and output measurement files, the impulse export in txt and a screenshot of the problem. Creating inverted filters for speaker drivers. Steps to reproduce: 1. Measure driver near field, result in something 90dB peak SPL, -30 peak dbfs 2. Create...

Hi all This is about dbfs and not SPL. I have tried different options but I must be missing a setting somewhere: I have done "measurements" which I use as filters in camilladsp. I export these measurements as impulse responses either txt or wav and I normalize to peak. Measurements are...

Ok I think I found that is has something to do with the regularisation settings, when creating the inverted response, before you then create the minimum phase version. By adjusting regularisation (1-2%) I can get good looking measurements. I will leave the post as if anybody else encounters this.