Measuring Audio Glasses (Left Mic Freq, Mic Echo, Left Speaker Freq, THD)

[Sikr19ee]

I am working on measuring audio smart glasses inside a small acoustic test chamber.
My goal is to generate four graphs:

1. Left Speaker Frequency Response
2. Left Mic Frequency Response
3. Mic Echo / Impulse Response
4. Left Speaker THD

I need Help in Generating these graphs For My test

 

[Keith_W]

This is not a trivial exercise. You will need special test equipment and the ability to dismantle the glasses to test the mic and speaker responses independently.

For the mic, it's not only the frequency response which is important, it is also the polar response.

For the speakers, you will need a headphone test fixture like the MiniDSP EARS (if you are a hobbyist) or a B&K 5128 (USD$40k) if you need industry standard measurements.

So the question is: who are you, and why do you want to know? If you are an engineer, you should probably already know these things. But if you are a hobbyist, the exercise will be too difficult for you.