diy STIPA measurement

We want to do a STIPA measurement in our church. We are going to replace the audio system and we want to compare the current setup and the new one.

The cheapest measurement device I found is a SM50 from Bedrock. That device costs 1200+ euros.
Another option a came across is an IOS app: File Not Found

That seems to be a relative cheap option. Eventually with an external mic.

What do you think about this app? Is this a good option or not worth the money?
 
I don't have any specific knowledge of this measurement but if you just want to make it twice wouldn't it be more economical to hire the equipment?

Some of the aspect of the overall score can be measured using a cheap calibrated mic and REW:
the speech level
frequency response of the channel
non-linear distortions
background noise level (might be lower than the self noise of a small elect mic capsule though)
the reverberation time

so if your trying to improve the system on a continual basis you could measure these aspects with cheap equipment and then get in the expensive system for the final score.
 
I recall there were folks around who had a free iphone ap on an older version. That will require two iPhones. One for the analyzer and another for the signal source.

Of course the ap may no longer be available.

Then you might try a demo version of Smaart spyware.

BTW where are you located?
 
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Thanks for the replies. We hire a pro definitely, but we want to have a some numbers for ourselves (and repeat over time). So we can compare 'a little bit'. The numbers could be rough, we are not interested in very detailed and specific reports.

I see that the link does not work, the link should be: STIPA Pro | Studio Six Digital

@simon7000, I'm located in the Netherlands.