Evidence from the early technical literature concerning electrical recording suggests that it wasn't until the <answer>1942–1949</answer> period that there were serious efforts to standardize recording characteristics within an industry. Heretofore, electrical recording technology from company to company was considered a proprietary art all the way back to the 1925 Western Electric licensed method used by Columbia and Victor. For example, what Brunswick-Balke-Collender (Brunswick Corporation) did was different from the practices of Victor.
Around what time period was there an attempt made to standardize recordings?
1942–1949