Article: Home Audio Fidelity - Room Shaper Review

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Hi all,

 

The files for REW can be downloaded from here (I removed them when I released my measurement tool...)

 

I take the opportunity to mention that I managed to get Room Shaper running with Roon for the server / end point configurations (like NAS + streamer like microRendu)

A Windows based computer is still needed in the network but not necessarily directly connected to the DAC.

Set-up procedure and required files are available here

 

[fresponse]

For windows you can use Foobar to perform different types of conversion, including adding VST effects. You just need to select a playlist (or isolated track) and use the "convert" option accessible with right clicking. In the "convert" menu you can select the output format, naming convention for modified tracks and add a VST plugin in the "processing" sub menu.

[fresponse]

Hello @ecwl

You can find some info on how Room Shaper is working here

It is not working as other corrections like the one you mention that will only deal with modes of minimum phase type. 

A good way to describe how Room Shaper works is to use the analogy of a musician that will adapt his playing to the room : if he detects a problematic resonance, he will play some notes softer and shorter

[fresponse]

Hi all,

 

As I have posted in this thread, I have released an upgraded version of Room Shaper.

It is now possible to have a diagnosis of your room perceptual issues and estimate how much will be the correction benefits (the higher the index, the higher the correction benefits)

 

Here is an example of the index for a pretty good room:

 

 

And for one with more issues:

 

 

But the main change is the introduction of a new correction ("impact") to handle all of the different possible room temporal behavior in the low/medium range. The traditional correction with filters is overlooking the temporal aspect as only the amplitude is considered (to have a full representation of a signal, both magnitude and phase are required) There can be phase correction (as I do with my service) but it usually only address phase shifts linked to passive crossovers in speakers.

 

It is very instructive to plot the enveloppe of pure tone test signal at listening position for different frequencies. Using measurements from a customer room, I have selected frequencies to show the main different possible patterns

 

 

It is easy to see the three main parts of the response : the onset, the steady state and the decay after the source has stopped (at 0.4 s)

The steady part level is equivalent to what we get from a frequency response graph. It is quite obvious that making a correction using only this information is not sufficient as music is mostly made of transients and this example is showing that many combinations are possible : slow energy build up but quite high steady state level (112Hz), correct energy build up but low steady state level (89 Hz = anti resonance), etc..

On this example the comparison b/w 89 Hz & 100 Hz is quite self explanatory : the perceived level for a short sound will be quite similar but very different for a longer one.

 

While the first version of Room Shaper was focusing on the energy release part of the response, you now have the possibility to address the different kind of issues for the signal onsets.

 

I hope this technical explanation will spark your curiosity and that will try the "magic",

 

Thierry

 

[fresponse]

Hello @taraba55

 

Yes Jriver dsp studio can handle convolution filters and Room shaper together. Your processing power should be sufficient and you can make a test as Room shaper is fully functionnal in demo mode.

[fresponse]

Hello,

 

I have made some new changes on Room Shaper (corrections, new feature) and you can find more info here

Cheers,

Thierry