@Stephane Collin said:
Could it be that those demos benefit from esoteric mastering processes ?
Hi Stephane
Of course there are better audio interfaces than your Fast-Track but keep in mind that mixing in a better way will much more improve your signal than a more expensive audio interface!
So to answer your upper question: Yes and no. The no stands for "esoteric".
As all Convolution based effects also MIR has its more or less coloured venues.
So you can try to improve your final sound on the one hand by chosing less coloured venues and of course with a "normal" mastering process.
On the other hand you also can increase the sound quality by doing a correct mix within MIR.
MIR is so easy to use that most of the musicians mean that they only can place the instruments and that they will get a result as we get it from "EMI".
That's unfortunately the truth. But if you are doing two "musts" you will come much more closer to your dream sound.
Must one: Cut the low frequencies of all instruments except the ones of the bass instruments.
This treatment will less blow up the total sound. In postive words: The mix will be more clear.
So use a "low cut EQ" with every instrument. Adjust the frequency from low to the higher frequencies until you notice that some bottom of the certain instrument sound disappears.
If you think it is too much you can go a little bit back.But often more is better than too less.
Even if the instrument seems to sound thin after EQing within the mix it's OK.
Further: reduce the dry/wet ratio over all to 35 - 45% (instead of 50%). Most time you get a nice room impression as well but less "mud".
Must two: EQ your final mix. Play it and compare it with another classical piece by switch to and fro.
Example ...(Second part: A MIR-mix: First part: an orginal recording of a similar Orchestra and music style)
You probably will recognice a coloured difference with your mix compared to a real recording as you get with the example above as well.
Compared to a real orchestra it can sound a bit (or a lot) cheesy, nasally or what ever.
Use your ears and a bell filter of an EQ. Set it as a starting point to - 8dB and Q = 1. Scan through the whole frequency range with your piece until the colour disappear more or less.
You probably have to adjust the EQ settings until you will have found the optimal sound. The "colours" are often somewhre between 100Hz and 3kHz.
OK, this seems to be a bit an unprofessional solution but it is far more than doing nothing.
I wish a lot of success
Save the money for a new audio interface and buy one more library ...better monitors or a good Mastering EQ
...or even better: all together 😉
Beat