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Using Impulse responses

Posted: 9 Mar 2021 4:11 pm
by Jack Stanton
I just purchased Eminence's PF-400 & TT-15 IR's and when I went to load them I see there's not only several mic choices but also several "Leveled" choices 48-96-and 441. Can anyone tell me what "Leveled" means, which one I would want to use, and why?
Thanks!

Posted: 9 Mar 2021 7:23 pm
by Ian Worley
I'm not familiar with the term "leveled" in this context, but those numbers are sample rates. A higher number is higher resolution, meaning more audio samples over a given period of time. Which one you select depends on what hardware or software you're using it with. Some devices can use multiple sample rates, some not. I have an Iridium and it can only use 96kHz samples, a Helix can only use 48kHz, I believe Kempers only use 44.1kHz, etc. The documentation for your device or software should tell you which you need.

Posted: 9 Mar 2021 9:44 pm
by Jack Stanton
So I need to find out the sample rate ofmy audio interface, is that correct?

Posted: 10 Mar 2021 10:03 am
by Ian Worley
Yes, if you'll be using the IRs with a DAW or a software cab loader or amp sim like Amplitube or BIAS, you will want match the bitrate of the project and/or interface.

With speaker IRs the actual samples are really short so as a practical matter, the differences you'll hear between bitrates may not be very noticeable, but to match the conditions the sample was created under the sample bitrates should always match.

Posted: 11 Mar 2021 9:27 pm
by Jack Stanton
Thanks, Ian!