speakerphone mic background noise rejection test

[Kevin T]

Is there a Standard for telecom speakerphone mic background noise
rejection performance ? Need to benchmark wireless devices.

KT

[GregS]

Post by Kevin T
Is there a Standard for telecom speakerphone mic background noise
rejection performance ? Need to benchmark wireless devices.

Seems most devices don't have any. Some large microphone elements
and capsules do have noise rejection. They also used to have telephone booths.

greg