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The Impulse Responses 

 

Another major part of the 

IR

-series is the Impulse Response (IR) Library. The library 

offers a set of high-definition IR’s. Waves paid special attention to this part of the 
product because it is the basic reverb sound of the 

IR

-series

 

reverbs. We established a 

special recording setup

 and 

method

 specifically for IR recording. This method provides 

exceptional signal-to-noise ratio, very low harmonic distortion, and a wide frequency 
bandwidth (20Hz-32kHz). Thus, it offers optimal sonic depth and dimension.  
 
This method for taking acoustical measurements was developed by Waves in 
collaboration with Professor Angelo Farina of the University of Parma in Italy. The basis 
of the acoustic capture method was documented and presented in the AES (Audio 
Engineering Society) paper 

Recording Concert Hall Acoustics for

 

Posterity

. To see this 

article, please check out the following link:  

 

http://www.waves.com/objects/pdf/general/article_farina05.pdf

 

 
 

 
IR Library 

 
The library that is included with the purchased 

IR

-series covers all of the reverberation 

needs of the most demanding studio professionals. It consists of 4 main parts: 
 

 

The Basic IR set

 is installed with the 

IR-

series

.

 It is available in the 

downloadable demo as well as in the full product.  

 

 

Sampled Acoustics

 V2

 contains a set of world-class Concert Halls, Opera 

Houses, Cathedrals, Studios and more. These are natural spaces captured in 
the USA, Italy, Japan, the UK, Israel, Australia, and more.  Our original Sampled 
Acoustics library has been reprocessed with enhanced quality, and new micing 
techniques were added. In accordance with our vision of continuously expanding 
the IR library, new venues have also been added to the library. 
 

 

Virtual Acoustics - Devices

 contains Sampled IR’s from classic reference 

reverb hardware.  

 

 

Virtual Acoustics

 – 

Synthetic

 contains synthetically generated or pre-

processed IR’s. 

 
 

Waves IR-1 software guide page 6 of 40 

 

Содержание Parametric Convolution Reverb IR-1

Страница 1: ...Waves Parametric Convolution Reverb IR 1 IR L and IR 360 User s Guide Waves IR 1 software guide page 1 of 40...

Страница 2: ...in channel components About the IR 360 IR series Controls and Displays About the IR L Reverb Time Convolution start Convolution Length Ratio RT60 Dry Wet control Direct Offline Calculation indicator...

Страница 3: ...Toolbar WaveSystem Controls Loading Impulse Responses Saving Importing Impulse Responses IR Info and Properties Notes on Flat Points or Unity Gain Settings for Controls System Requirements Notes CPU a...

Страница 4: ...wo reverberation generators The Early Reflections Generator This generator is based on a short Finite Impulse Response FIR filter with less than 100 reflections A short stage of convolution is perform...

Страница 5: ...like running it through the original device with the same settings or like recording the signal in the sampled space with a microphone setup similar to the one used for capturing the acoustics These r...

Страница 6: ...rticle please check out the following link http www waves com objects pdf general article_farina05 pdf IR Library The library that is included with the purchased IR series covers all of the reverberat...

Страница 7: ...is available with the installation of the IR series even for demo purposes The IR data for these presets resides in the folder IR1Impulses V2 in a directory called Basic The Path is Waves Plug Ins dir...

Страница 8: ...IR 1 and IR 360 allow you to import the Sweep Response that you record in an acoustical space or hardware device The plug in will then process that Sweep Response into a new IR Here are step by step...

Страница 9: ...absorb sound and dramatically change the reverberation quality of the acoustic space MEASURING VINTAGE PLATES SPRING REVERBS OR ANY REVERB UNIT The measuring procedure is quite similar to a normal voi...

Страница 10: ...etc You can use a microphone of any kind with any polar patterns We recommend a cardiod or omni directional microphone After deciding which microphone to use set up the microphone with the speaker loc...

Страница 11: ...input This component is very practical for stereo to stereo reverberation It provides beautiful reverberation with all the depth and dimension that you might need on an auxiliary stereo reverb Full St...

Страница 12: ...iguration of Convolutions Mono to 5 Channel Discrete Surround processor 4 or 5 Efficient Stereo to 5 Channel Discrete Surround processor 4 or 5 Mono to 5 Channel Sound Field 3 Efficient Stereo to 5 Ch...

Страница 13: ...Waves IR 1 software guide page 13 of 40...

Страница 14: ...Waves IR 1 software guide page 14 of 40...

Страница 15: ...Waves IR 1 software guide page 15 of 40...

Страница 16: ...1 The IR L can be upgraded at any time to an IR 1 or IR 360 IR L CONTROLS AND DISPLAYS IR 1 and IR 360 users can skip to the following section labeled IR 1 and IR 360 Controls and Displays on page 17...

Страница 17: ...ing will only use the amount of CPU it needs for the loaded IR so there is nothing to gain by manually setting it to 2 seconds for a 2 second IR RATIO Range 25 to 1 00 Default 1 00 The Reverb Time Fad...

Страница 18: ...he Dry signal it is generally recommended to turn off the Direct DIRECT Range ON OFF Default Off This switches the direct signal on or off PRE DELAY Range 0 500ms Default 0 This controls the amount of...

Страница 19: ...ulation process can take up to several seconds While the impulse response calculation is taking place the Reverb IR graph displays Calculating and the audio is muted After the calculations are perform...

Страница 20: ...t and its range is from 30dB to 60dB The scroll bar on the bottom allows you to zoom in and out horizontally as well as scroll back and forth There s a Reset button on the right of the scroll bar that...

Страница 21: ...e 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...

Страница 22: ...iginal IR Reducing density will usually result in a more grainy sound increasing density will usually create a thicker and smoother sound The outcome will vary according to the nature of the reflectio...

Страница 23: ...t is generally recommended to turn off the Direct Wet Properties The Wet Properties section has separate on off gain and delay controls The IR 1 engine analyzes the impulse response loaded into it and...

Страница 24: ...series is programmed to auto detect if a direct signal is available or not If the imported IR has no direct signal then the direct signal On Off control will be disabled In some cases when importing a...

Страница 25: ...st and most significant part of the reverb and its decay The Reverb Tail has a spectral damping signature that is unique to each IR The Tail can be used without Early reflections and you can also appl...

Страница 26: ...On All elements have link controls so that all gains can move together as if in multi selection When an offset is made re linking will preserve the offset and limit the range to the extreme denominat...

Страница 27: ...o achieve non linear responses such as faster or slower decay gated response or special creative gain manipulations The control has a gain line representing Time on the X axis and Gain on the Y axis T...

Страница 28: ...reverb time of the high and low frequencies The Reverb Damping controls allow you to modify the Low and Hi Frequency decay times of the IR relative to its overall Reverb Time The controls are grouped...

Страница 29: ...the frequency response of a room s reverberation This information is captured in the Impulse Response The total decay time of a room might be 2 seconds but high frequencies might have a decay time of...

Страница 30: ...than at middle frequencies If you want some extra warmth set the LF damping at slightly greater than 1 00x Reverb EQ The IR 1 has a 4 band Paragraphic EQ section with a Low Shelf filter 2 Bell Shaped...

Страница 31: ...ons The control is effective only when the Direct control is set to Off ER TR X CROSSOVER Range 100ms Default 0ms This control allows you to modify the time reference point that splits the Tail Reflec...

Страница 32: ...stically natural the plug in may fail to detect the Direct ER or Tail as separate parts This is typical of small rooms or spaces with a reflective floor The direct signal and the ER cannot be separate...

Страница 33: ...ont speakers and 35 will be put in the rear speakers PRE DELAY OFFSET Range 0 to 80ms Default 0 This control adds a time delay to the reverb on the rear speakers It can create an effect similar to tha...

Страница 34: ...load just the default IR by choosing Impulse Response This leaves all other parameters unchanged Full Reset sets the plug in to a flat setting that allows for auditioning the original Impulse Response...

Страница 35: ...der in a sub folder called IR1Impulses The Impulse files are stored in a proprietary Waves format and use the extension wir Waves Impulse Response The wir files cannot be opened in normal Audio Editor...

Страница 36: ...d approach is to try to reach the point where the perceived loudness of the fully wet signal is similar to that of the fully dry signal Depending upon the channel component of the plug in IR series wi...

Страница 37: ...Current manipulated values for Convolution length of the convolution filter for the current IR The output length may differ from the input length due to one of the following reasons 1 Convolution user...

Страница 38: ...ained by using the Gain Envelope Bypass control or by using the Gain Envelope Clear control In the Damping Filters section set the ratios to 1 for the flat point In the EQ filters section the flat poi...

Страница 39: ...OMPONENTS Efficient Stereo consumes the same amount of resources as the Mono to Stereo and about half of what the Full Stereo consumes While it presents a compromise on the purist natural reverb the o...

Страница 40: ...e sensitive to the slope at the higher gains so while shortening RT60 will sound like a smaller reverb shortening the Convolution length will simply sound less linear at the lower IR gains IR 1 HTDM T...

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