Room Correction Beta firmware for WiiM Pro, Pro Plus and Amp - User Testing Experience

[steadyshot]

Do you mean this setting:

View attachment 8081

Yes but I have checked the fixed volume output otherwise 90% does not correspond to -6db

 

[alpha_zulu]

Fixed volume does not fit with 90% in my head. But it seem to be different things!?

 

[harkpabst]

Yes but I have checked the fixed volume output otherwise 90% does not correspond to -6db

Even with fixed volume output not enabled the volume limit (really a bit of a misnomer) should work the same.

In case of the WiiM Amp with passive speakers there isn't even a fixed volume output setting (for good reason ) but it makes a lot of sense to set a volume limit if EQ with positive gain is used.

Same for the Pro or Pro Plus if used as pre-amps.

Fixed volume does not fit with 90% in my head. But it seem to be different things!?

It's not the output volume that gets limited. It's about how much the level is reduced prior to applying EQ.

 

[Jls]

The volume limit prior to eq should be automatic, or at least clearly documented.

It’s not really limit, is it? More of a cut. There’s no guarantee against clipping.

 

[alpha_zulu]

It's not the output volume that gets limited. It's about how much the level is reduced prior to applying EQ.

Sounds complicated. Does this mean that if you leave the value at 100%, the PEQ can only lower peaks but not raise dips?

 

[harkpabst]

Sounds complicated. Does this mean that if you leave the value at 100%, the PEQ can only lower peaks but not raise dips?

PEQ can still apply boosts to fill in dips (not always a good idea) and exactly that is the problem. It might lead to digital clipping.

It’s not really limit, is it? More of a cut. There’s no guarantee against clipping.

No, it's not a cut. If applied correctly it does prevent clipping.

 

[alpha_zulu]

The volume limit prior to eq should be automatic, or at least clearly documented.

For sure. It's not something I want to worry about as a user. The software has to take care of that on its own.

 

[harkpabst]

There is at least one feature request (maybe more) in this forum for exactly that and nobody cares voting for it.

 

[slartibartfast]

There is at least one feature request (maybe more) in this forum for exactly that and nobody cares voting for it.

So Room Correction has gone through beta and finally reached production and nobody thought to prevent clipping. Wow.

 

[alpha_zulu]

There is at least one feature request (maybe more) in this forum for exactly that and nobody cares voting for it

Probably because it's difficult to understand what it's all about.

 

[alpha_zulu]

So Room Correction has gone through beta and finally reached production and nobody thought to prevent clipping. Wow.

If I understand it correctly, it's not just to do with room correction. Clipping can also occur when the PEQ is used manually. And PEQ has been around for quite a long time. I was never aware of this problem.

 

[slartibartfast]

If I understand it correctly, it's not just to do with room correction. Clipping can also occur when the PEQ is used manually. And PEQ has been around for quite a long time. I was never aware of this problem.

Yes true. It probably isn't easy to automatically choose the correct gain reduction as some tracks will clips and others won't. Does Room Correction allow you to turn off any positive gain filters?

 

[alpha_zulu]

Yes true. It probably isn't easy to automatically choose the correct gain reduction as some tracks will clips and others won't. Does Room Correction allow you to turn off any positive gain filters?

No, that‘s all you get:

 

[harkpabst]

No, that‘s all you get:

View attachment 8088

What happens if you set Max Gain to 0?

Does that effectively disable RC or is negative gain still possible?

 

[harkpabst]

So Room Correction has gone through beta and finally reached production and nobody thought to prevent clipping. Wow.

Honestly, I don't think that anyone (outside WiiMl has measured this so far, so we can't be sure.

 

[alpha_zulu]

What happens if you set Max Gain to 0?

Does that effectively disable RC or is negative gain still possible?

I need to test it tomorrow.

 

[canard]

Honestly, I don't think that anyone (outside WiiMl has measured this so far, so we can't be sure.

on eq the problem has been known to wiim since spring 2022.. and the request for an automatic gain adaptation function which seems to have come across other apps since this same period.... we have been talking about it regularly since



on peq it is already measured...
but above all the case of peq is more complicated than in eq, given that it is possible to saturation even in negative gain... there is a "musician" thread here that deals with this subject...
a well-known subject

 

[slartibartfast]

on eq the problem has been known to wiim since spring 2022.. and the request for an automatic gain adaptation function which seems to have come across other apps since this same period.... we have been talking about it regularly since



on peq it is already measured...
but above all the case of peq is more complicated than in eq, given that it is possible to saturation even in negative gain... there is a "musician" thread here that deals with this subject...

How can negative gain cause clipping?

 

[onlyoneme]

How can negative gain cause clipping?

 

[slartibartfast]

View attachment 8090

Fair enough, all my filters have been PK.