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fresponse

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  1. 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.
  2. Phase plays in important role for the "ambience" generation. The sources re-positioning part of the process is linear phase. You can keep a post EQ as long as it is common for left & right channels. I like the iso loudness approach (match headphones vs loudspeaker) promoted by David Griesinger. You can try it using his plugin or my own tool available here (my tool gives the option to correct your loudspeaker to have a fully flat frequency response when determining your iso loudness curve)
  3. Hello @Bill Brown The configuration file you get with the configuration tool has a specific format as it can only be used by Soundstage Shaper. I don't fully understand why you can't use any plugin with Audirvana ? don't hesitate to email me ([email protected]) if I can support you for the standalone version
  4. You need to do all processing in your Mac mini and use one of the options listed in the "My DAC is connected to my computer via USB" chapter
  5. 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
  6. As Roon is not accepting third party plugins, you still need to use one of the workarounds I have listed here
  7. Hello @LarryMagoo Yes you can use plugins separately or combined (the only limitation can be processing power)
  8. Hi all, I am happy to announce upgrades and new stuff on the plugins side : Room Shaper : I have continued my quest for the perfect tool to solve low&mid frequencies room issues. While the original version was focused on the resonances decay time issues, the new version is adding a correction for the onset side. I call it "impact" correction as it brings back the controlled punch we can have in very good listening conditions. I have added a new graph to show how much your room has perceptual issues. The plugin is available here Soundstage Shaper : the beta testing phase discussed in this thread came to a positive end and the new plugin and its configuration tool are available here And finally, a new tool to smartly compensate for hearing loss (linked to age or specific disease) Discussed in this thread and available here Cheers, Thierry
  9. Hi @jrobbins50 Yes you can enter your own hearing thresholds in my plugin proposal (with the faders you can see on the user interface screenshot) Unfortunately you need some virtual cabling solution if you want to use plugins with Roon/HQP. I have made a list of options on my website here
  10. Thanks @Pro Jules for launching this topic. I got requests from customer using my correction service to generate filters for hearing losses. So I dig a little bit into this question and found out that "standard" eq is not fully appropriate. This is because hearing loss is not linear : in each impacted frequency region, quieter sounds will require more gain than louder ones. Hearing aid devices do implement such non linear gain structure. In studio langage, similar effect is achieved with frequency dependent compressor/expander. I have generated a plugin to implement such correction (input based on users age or measured hearing thresholds) The plugin is in beta testing phase and can be downloaded from here : https://drive.google.com/drive/folders/1cPipRWau9_c84CPXmkR6LEh5OMjwwGL3?usp=sharing All testing feedback is welcome, Thierry
  11. Hi @Bill Brown It is not yet in my plans to work on center channel addition, as there are already alternatives to do that. As intensity panned recordings are quite different from spaced mics recordings, it makes sense to sometimes prefer crossfeeding for headphones or crosstalk reduction for loudspeakers... and all this is subject to individual subjective preferences... The first feedbacks on the new plugin are very positive, and I will soon close the testing phase : this is the last call ;-) Thanks, Thierry
  12. @Confused One explanation for what you observe is comb filtering due to crosstalk when you play the same signal with 2 loudspeakers. It is explained in my video on acoustic crosstalk at 4:30 here
  13. Yes, the idea is to go beyond this type of mid / side correction. I mentioned headphones because the calibration process is easier, but of course my tool is applicable to speakers as well.
  14. Hi all, I have revamped my Soundstage shaper plugin by extending the concept of stereo shuffling and making it applicable to headphones listening. The objective is to better align all frequencies of sound sources sharing the same position in the virtual soundstage. As we all have a different hearing, the plugin will come with a companion configuration tool to perform optional individualization. Some more technical background is available here I am now looking at some beta testers to evaluate the plugin&configuration tool combo. The main requirements to apply are - use a player accepting external plugins (JRiver, Audirvana, Foobar for instance) - being a regular headphones user If interested, please contact me at [email protected] Thanks, Thierry
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