I have heard alot about these correction tables floating around are for the older meters, and from what I read the new ones are a bit more accurate. I am looking for the correction charts on radio shacks most current digital sound meter.
If anyone would have this, that would be excellent.
The current SPL meters are pretty accurate below 1 KHz. I recently compared ten popular measuring microphones, and this article shows where and by how much two RS models vary from more accurate standards: