looking for someone by being blinded.

[tiarakia]

Hi,
During a fight, I became Blinded. I wanted to search my foes with perception.
With my MG, we used the table in section "invisibility" because in the section" perception" there is anything written to find someone if I am blinded.

Invisible creature is… Perception

In combat or speaking –20
Moving at half speed –5
Moving at full speed –10
Running or charging –20
Not moving +20
Using Stealth Stealth check +20
Some distance away +1 per 10 feet
Behind an obstacle (door) +5
Behind an obstacle (stone wall) +15

Did we forgot a rule? Did we make a mistake?

How you do that?

Thanks for your answer.

[Adjoint]

When you are blinded you cannot make Perception checks based on sight, and there is no standardized modifier for making a Perception check without using it. I tmakes sense to treat it as trying to notice an insibile creature, that is +20 to notice it's presence, and +40 to pinpoint its location.

I would note though that in the Perception table there are several entries that list Perception DC to hear some things. You can use them as a baseline to make the estimations for other hearing-based Perception checks. For example, if it's DC 10 to hear a walking creature, it may be DC 5 to hear it running. The sound of unsheathing a weapon may be compared to the sound of a key being turned in a lock (DC 20).