Waves Parametric Convolution Reverb IR-1 User Manual

Contents

Tips for sampling an acoustic space

Waves Parametric Convolution Reverb IR-1 User Manual Manual pdf 9 page image

Tips for Sampling an Acoustic SpaceWhen sampling an acoustic space, a typical setup includes a multi-track recorder, anamplifier and speaker to play the sweep signal into the space, and one or moremicrophones (and mic preamplifier(s), if needed) to capture the sound.Ideally, the speaker, amplifier, microphone(s), and microphone preamplifier(s) usedshould be as transparent as possible, having flat frequency responses. A microphoneof any polar pattern will work, although we recommend cardioid or omni-directionalmicrophones for optimal results.In most venues, the speaker that plays the sweep tone should be placed where theperformers would be; on stage in a concert hall, for example. The microphone shouldbe placed somewhere in audience area; naturally, a microphone placed closer to thestage will capture more direct sound and less reverberation than a microphone placedin the last row. Keep in mind that the presence of a full audience, as well as musiciansor musical equipment on the stage, will absorb sound and dramatically change thereverberation quality of the acoustic space.MEASURING VINTAGE P LATES, S PRING R EVERBS OR ANY REVERB UNITThe measuring procedure is quite similar to a normal voice processing (via the plate orthe spring unit). The difference is that we do not use an aux send. Instead we connectthe output of our sweep playback device directly to the plate or spring reverb device.SET U P:Connect the output of your source (Pro-Tools HD card, etc…) directly to the input of themeasured unit. As for the output of the measured unit, connect it directly to therecording device (HD card, etc…)Output source (HD card, etc…) Æ Input of the plate.Output of the Plate Æ Input of the recording device (HD card, etc…).SESSION:Create two different channels. The first channel will be the sine sweep channel. We usea simple sweep signal, which is a pure tone whose frequency is changed continuouslyfrom low to high frequency. The second channel should record the wet signal, which wereceive from the plate reverb. If there is more than one setting on the unit pleasemeasure them all. For instance, reverb settings (1-5), mono-to-mono, mono to stereo,and stereo to stereo.Waves IR-1 software guide page 9 of 40