Is it true that Yamaha Resampled Older Voices Like Megavoice Brass For Example.

[Keyboard Master]

Hi Everyone I know these questions keep popping in my head but i also talked about in another thread here https://www.psrtutorial.com/forum/index.php/topic,65242.0.html But im also wndering about older voices that started from the Tyros 1 2 3 4 and 5 Did they resample certian ones to inprove them. if so how did they do it. Any Answer Id apricciate.