What are impulse response files?
An Impulse Response file is basically an audio file in wav format. If you try to play the file through an audio player, the audio is so short that you won't hear anything. But when you load it in an IR loader, you end up with an impressive recreation of the guitar amp speaker and equipment used.
What is impulse response guitar?
An impulse response (or IR) is a sonic measurement of the sound of a speaker, room or microphone in relation to a sound source. In guitar terms, this is usually your amp. ... The idea of an impulse response is to capture all of that information in one go, so you can instantly recall that setting.