[78-L] microphone technology

[neechevoneeznayou at gmail.com]

 From time to time we have discussed on this list the advancements in 
disc recording technology and the ability to capture high freqs.

Have we ever discussed microphone advancements?

I am listening this morning to the Rachmaninoff Second Symphony in 
Sokolov's 1928 Brunswick reading with the Cleveland O. The sound of the 
violin section is clearly limited above a certain frequency.

I am wondering if someone can cite a specific number for an upper limit, 
and further describe how that number went up by a given year.

joe salerno