Home cinema RTA measurements with silicon ear

[Andysu]

I do my RTA measurement differently where I can take one measurement without the silicon ear or with that shows more less sensitive frequency range area in-which make some correction with the PEQ.

Blue is without the silicon ear and Red is with the silicon ear attached to the Behringer ECM8000.

 

[Andysu]

I noticed playing back the video how the Panasonic stereo wide microphone sounds, very toppy on the pink noise, what is all this!? Put it though directly though the THX oh that explains why it is toppy. Not the Behringer ECM8000 thou not used the Panasonic stereo wide mic for RTA use.
So the sound in the video oddly is little different than the actual pink noise that was sounding on the JBL 2445 CD - 2380A horn. I could have used the actual ECM8000 connected to the Sony handicam maybe in the next video.

 

[Andysu]

More testing.
I placed the silicon ear close to the projection screen. interesting. It suddenly elevates upwards and flat then elevates downwards like it has a 48dB crossover applied. interesting.

 

[Andysu]

Sennheiser hd 559 tested again with silicon ear to show where roughly the frequency elevators at due to the resonate frequency at around 4KHz to 8KHz of the ear canal. Each ear is shaped different as is the ear canal.

Behringer ECM8000 was used with a silicon ear attached to the microphone with a scarf wrapped around the mic and ear so make it sealed and connected to Sony SDDS DFP-D3000 headphone monitor using REW for the frequency sweep graphs.

 

[pozz]

More testing.
I placed the silicon ear close to the projection screen. interesting. It suddenly elevates upwards and flat then elevates downwards like it has a 48dB crossover applied. interesting.

View attachment 132649

That flattop might be indicative of clipping/limiting.