Waves IR-L, IR-360, IR-1 manual Reverb Time

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Reverb Time

The Reverb Time section includes these 4 parameters:

CONVOLUTION START: Range: 0 TO 1 second; Default: 0 seconds

The Convolution Start control determines the starting point of the convolution process. It enables you to remove unwanted pre-delay at the beginning of an IR.

CONVOLUTION LENGTH: Range: 0 seconds to 6 seconds; Default: Full

This control sets the length of the process filter. By default it is set to Full, which means that the IR-series will convolve the input with the whole Impulse Response. However, if the IR is longer than 6 seconds then it will be cut to 6 seconds. This will be indicated in the IR Properties display. You can also set the Convolution length manually to be shorter than the RT60 Reverb time in order to save some CPU. This makes the Impulse Response stop at some point down the slope, creating a “gated” reverb sound. This gating effect can be avoided by using the Envelope to make the IR fade out earlier. The default Full setting will only use the amount of CPU it needs for the loaded IR, so there’s nothing to gain by manually setting it to 2 seconds for a 2 second IR. RATIO: Range: .25 to 4.00; Default: 1.00

The Reverb Time Fader controls the Reverb Time Ratio. The resulting reverb time will be the original RT60 multiplied by the ratio.

RT60: (Reverb Time, 60dB) is defined as the time it takes the sound pressure level of a sound to drop by 60dB in gain once the source has been shut off. It is actually a slope factor. RT60 is a term that is commonly used in building construction and architecture to describe a room’s acoustic properties.

This field shows the reverb’s current RT60. It is the original RT60 multiplied by the Reverb Time Ratio. To determine what the original RT60 is, set the Ratio to 1.00. The original RT60 is calculated by analysis of the loaded IR.

Waves IR-1 software guide page 21 of 40

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Contents User’s Guide Table of Contents Waves IR-1 software guide page 3 Synthetic Digital Reverberation IntroductionPerfect Hybrid Sampled-Acoustics Convolution ReverberationIR Library Impulse ResponsesPage Virtual Acoustics Devices and Synthetic Sampled AcousticsImport Impulse Response from File… Import Sweep Response from File…Tips for Sampling an Acoustic Space SET-UP Page About the IR-360 Channel Configuration # of ConvolutionsWaves IR-1 software guide page 13 Waves IR-1 software guide page 14 Waves IR-1 software guide page 15 About the IR-L Reverb Time Latency Offline Calculation indicator IR-1AND IR-360 Controls and Displays Reverb Time Reverb Control Parameters Wet Properties Direct Signal Reverb Tail Latency Reverb Envelope Offline Calculation Indicator More about Reverb Damping Reverb EQ High Shelf Filter This control is only available in the Efficient components Toolbar WaveSystem Controls IR-360 ControlsLoading Impulse Responses Importing Impulse Responses SavingIR Info and Properties Page System Requirements CPU Mode Switch IR-1 Htdm
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