Audioease Altiverb 6 Ir Impulse Responses Complete Library

Each of the above mentioned plugins need slightly different techniques for creating a custom library of impulse responses. This article is a description of the general concepts behind recording good impulse responses and should be easily adaptable to any convolution/de-convolution tool.

The impulse responses or IRs are captured by recording how a space responds to a full range of frequencies (typically 20Hz to 20,000Hz). This is achieved by playing back a burst (impulse) of a full range of frequencies within the space and recording it. For more accurate results it is common to use a sine-sweep across the audible frequency range.

Audioease Altiverb 6 Ir Impulse Responses Complete Library

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The Impulse Response library is now more accessible then ever because of Altiverb's newly designed browser. Select impulse responses by clicking photos of rooms. Instant, gapless loading, finding similar sounding spaces, organise by reverb length (RT60), and single click favorites are just a few of the possibilities. The Impulse Response Browser and the pictures in it are resizeable and contains an extensive search field.

With the sweeps and tool you get with Altiverb 8 you can capture acoustics yourself and use these impulse responses in Altiverb. Please check the tutorial video and follow the tips to get best results.

Altiverb can have mono or stereo inputs. When making impulse responses, we used either one speaker position in the center of the stage for mono input, or two speaker positions for stereo input. So there is a direct relation between the amount of inputs and the speakers used. Using the positioner tab, available only in mono and stereo input Altiverbs, you can switch on the speaker, in which case you can hear where it stands. You can also, right there, move the speaker around.

The Impulse response library can be kept up to date from within the plug-in. The TDM structure has been heavily simplified, altiverb is now the only total recall convolution reverb (without the use of snapshots). It adds drag and drop impulse response making from sweeps, slate claps or anything experimental from piano chords to overhead thunder. Altiverb 7 is fully backwards compatible: you can open up any old project and it will load and sound the same as Altiverb 6.

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