Don Richard Posted October 6, 2018 Share Posted October 6, 2018 On 10/4/2018 at 5:26 PM, garyrc said: If there were a test tone of the same frequency, or. perhaps, a band limited pink noise signal recorded at a standard level on each medium, then there would be an opportunity to set them to the same SPL level. I would think that within 0.25 dB would be close enough, but if there is evidence that within 0.1 dB is needed, so be it. Accumulated acoustic energy is the most accurate way to match levels for comparative testing of audio components. Here is how it was done to test audible differences between two amplifiers: "I started these trials with just the Bryston and the Crown, and spent a lot of time getting their levels matched, a channel at a time, using the RTA software in the TEF analyzer to accumulate acoustic energy over a minute and adjusting so that both amps yielded the same accumulation to within about 0.2 dB" http://www.moultonlabs.com/more/what_is_the_sound_of_one_amp_clipping/P2/ 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.