@Ramu said:
This friend of mine came and tried to tweak the settings...with every venues from MIR. It sounded already better!
This is not my experience at all. I have Altiverb, used it for years, know the Todd AO sound and do not like it. Altiverb does not even approach MIR. You must understand something about ALtiverb - it is extremely limited compared to MIR, not the reverse. Altiverb offers a lot of venues, but they are all only a few impulses sampled. Those are then tweaked to fake the movement of sound sources around the stage. This has nothing to do with MIR which has hundreds of sample impulses for just one venue and allows total realism of placing a sound source within a space.
ALtiverb does not do convolution correctly for orchestral use. Because the first thing that must be done is to have multiple sound sources with one microphone placement. That is what MIR does. Altiverb is the reverse. It has multiple miking with one sound source on almost all the impulses that were sampled. So you must FAKE the differential placement of the instruments. It is mainly useful for film sound FX because of its many different locales - such as an aircraft hanger, etc. Though of course, yes, a good engineer can make it sound great. A good engineer could probably blow you away with a $200 hardware reverb box because he knows the tricks. But the idea behind MIR is to create a reverb as well as sound environment that is designed specifically for orchestral sound and can be used by musicians themselves to create a great mix. It actually can do that which is pretty amazing.