When doing indoor (and even outdoor measurements it seems) to get a quasi-anechoic response from a speaker, we use time gating to eliminate reflections. This technique, especially indoors, has a lower frequency limit.
Could we not use a directional microphone to attenuate first reflections to lower the limit further?
With ambisonic microphones (e.g. from miniDSP, or RODE) it seems we could even emulate microphones with relevant properties in a post processing step, simplifying everything.
This idea seems so simple, so why does it not work?
Disclaimer: I tried to search here and google this and found nothing of relevance. Perhaps I am using the wrong terms...
Could we not use a directional microphone to attenuate first reflections to lower the limit further?
With ambisonic microphones (e.g. from miniDSP, or RODE) it seems we could even emulate microphones with relevant properties in a post processing step, simplifying everything.
This idea seems so simple, so why does it not work?
Disclaimer: I tried to search here and google this and found nothing of relevance. Perhaps I am using the wrong terms...