Why does my DSA awarded headset/headphones/mic microphone not work as well as I want or expect?

Why does my DSA awarded headset/headphones/mic not work as well as I want or expect?

DSA-awarded audio equipment is usually very entry-level.

Any "shotgun" Mic, for instance, may be labelled as such, but the Andrea SG-110M is specifically only barely able to qualify as such.

We have tested multiple and they work as intended/in line with their specs.

If you try to record someone in a noisy/echo-filled auditorium with this mic, it will not work. If you try to record the entire auditorium or one person a few feet away, it will work.

In addition, examining the mic, the polar patterns in the insert are for a unidirectional, cardioid mic. Not a shotgun.

When we test them in a relatively/under a few db environments, we find they work okay to pick up a single voice.

But are, by design not Omni directional. So once the lecturer/subject moves out of the capture field, which the further away they are can be very small, they will be muffled/hard to hear.

What this does mean is that a better Mic may be needed, but we can only supply what the assessor/student has agreed to and DSA approved.

With both Microphones and headsets/headphones as well, the noise cancelling features that are inbuilt will again be very entry-level/rudimentary. Expecting a £20-50 headset/headphone to have the same active cancelling features and abilities as a £300-10000 pair of headphones is not realistic.