Emulating Glasses for Headphone Measurements

[amirm]

So I am getting questions again about how well a headphone measures with glasses on. With no industry standard, we need to cook up our own solution. This is the fixture I use: https://www.audiosciencereview.com/.../asr-getting-into-measuring-headphones.18086/

We need a way to affix glasses to the fixture. We have the two ears so that part is OK but I think we need a nose arch to anchor the glasses so it doesn't droop. Assuming we get such a thing then I need a way to fasten it. I am not fond of gluing it so maybe use rubber bands around the fixture???

And what would be representative glasses?

Alternatively, we could come up with something I slide under one cup and remeasure. What are some ideas around that?

 

[dfuller]

A thin enough dowel might be close-ish? Hard to consistently position, though.

 

[Somafunk]

Use blu-tak on arms to stick to the head/fixture, no need for the frame.

 

[frogmeat69]

Maybe just use the arms from a pair of old glasses, the ear pads would probably hold them in place if they have enough clamp.
Or if you mount something, rubber bands or zip ties might work.

 

[amirm]

I need something consistent and repeatable guys.

 

[Vini darko]

@solderdude would be good to ask as he does seal breach testing with his measurments.
You should get a wig for it to test for hair though

 

[voodooless]

 

[Zim]

I'd imagine someone good with 3D printing could 3D print a "nose" attachment for it given the measurements of the unit.

 

[Doodski]

Here are straps that go around the back of the head. There is a silicone one and elastic types too.

https://www.amazon.com/customerpicks/Explore-head-straps-for-glasses/0089e9b15927ddc0fe6f
https://www.walmart.com/browse/health/eyewear-retainers/976760_1078944_4440065_4900335
https://www.walmart.com/ip/Chums-Switchback-Silicone-Eyewear-Retainer/50876465

 

[amirm]

Here are straps that go around the back of the head. There is a silicone one and elastic types too.

Good thinking there! Will look into this.

 

[Doodski]

adhesive hooks for hanging stuff. Can be used for holding up the nosepiece of the glasses.
https://www.homedepot.com/p/Command...4-Large-4-Medium-8-Small-17200CL-ES/205065860
https://www.homedepot.com/p/Command...signer-Hooks-2-Hooks-4-Strips-17081/100391822
https://www.command.com/3M/en_CA/command-ca/products/?N=5924736+8719438+3294529206&rt=r3

 

[AdamG]

Zip tie looped around the top post and just slide the glasses in to rest on the nose section. Once set it should be repeatable within reason.

 

[Mad_Economist]

adhesive hooks for hanging stuff. Can be used for holding up the nosepiece of the glasses.
https://www.homedepot.com/p/Command...4-Large-4-Medium-8-Small-17200CL-ES/205065860
https://www.homedepot.com/p/Command...signer-Hooks-2-Hooks-4-Strips-17081/100391822
https://www.command.com/3M/en_CA/command-ca/products/?N=5924736+8719438+3294529206&rt=r3

I would echo this suggestion - a hook at a clearly defined point can allow for very consistent placement, because each frame should only hang one way on it (contra a real nose).

I would also suggest trying both flexible, thin-framed metal glasses and thick plastic ones, the differences can be surprising.

 

[Doodski]

I found prosthetic noses. Not sure how they could be affixed to the head because they appear to be silicon.

https://www.etsy.com/ca/listing/970...UbPBO_FeV3y6A4qcuoXcOA04_A7Nz1uxoCkloQAvD_BwE

https://www.etsy.com/ca/listing/843...IZSJuUEIOF9gNOCdf8mG7dqM8hrQ7IJhoCyQ0QAvD_BwE

https://www.etsy.com/ca/listing/840...5SFYREHBVIHzQH793OfB0oWY8sojUQDxoCJNwQAvD_BwE

 

[antdroid]

3M command strip/hooks that are sold at any store like Target or Fred Meyer may work to hold the glasses up and it's removable.

 

[Zensō]

3M command strip/hooks that are sold at any store like Target or Fred Meyer may work to hold the glasses up and it's removable.

Agreed. These hold really well and do no damage. Not sure which size would work best.

 

[Chromatischism]

$7 at Walmart

 

[solderdude]

I just stick some reading glasses with various thickness between the pads and rig.
Have 2 different ones.
I also use a 6.3mm plug I simply stick under there.
My test fixture is flat though and has a 'skin-like' closed cell foam that is about as thick and compliant as my skin, its not a hard surface.
I can see if seal breakage could be a problem.
To verify I also listen and lift the pads.
Some (mostly closed headphones) are terrible. Some open headphones aren't great either.
Most open headphones are hardly affected. You can lift the pads from the HD560S for instance and even with a small gap there is still bass.

 

[Oddeeo]

I don’t get why people feel the need to keep their glasses on while listening. Just get contacts

 

[edahl]

I don’t get why people feel the need to keep their glasses on while listening. Just get contacts

Let me just rip out your eyes and socket them for a second so I can wear contracts.

Anyway, sounds weird saying it, but a silicon mold face?