SIR Audio Tools
SIR1 Screenshot
This is a reverb device that works with "impulse-responses". Impulse-responses are generated by recording short broadband signals and their corresponding room-reflections. What you get contains the information needed to reproduce the same room with other signals

Facts

  • freeware
  • Windows VST-Plugin
  • works with a fixed latency of 8960 samples (possibly compensated by VST-Host).
  • you can adjust predelay, attack-time, length and stereo width of the impulse response
  • Stretch (up & down sampling of impulse response)
  • FFT EQ (to adjust the frequency spectrum of the impulse-response)
  • Auto Gain (automatic volume compensation)
  • Dynamic CPU Consumption (use only the CPU power that is needed to get the result)
What are the differences between SIR1 and SIR2?
click here for SIR1 - SIR2 comparison chart

Download


The software on this site is provided "as-is," without any express or implied warranty. In no event shall the author be held liable for any damages arising from the use of the software.

Download SIR1 v1.011
SIR1 is only available for Windows. SIR2 is available for Mac(AU/VST) and Windows(VST)

Installation Manual:
Put the DLL-file into the VST-plugin folder of your VST-host.
If you want to use the new version instead of the old, rename the file like the old one.

Download Example Impulse Responses

F.A.Q.

  1. What is SIR1 ?
  2. Which DAW have Plugin-Latency compensation.
  3. How to get "Impulse Responses"?
  4. Is a RTAS-Version of SIR available?
  5. It seems if I move the Impulse Response SIR can no longer find the file.
  6. the impulse files seem to be .rar files, but SIR seems to be looking for .wav files?
  7. My Sequencer doesn't compensate latency when using SIR as Send-Effect. How do I use SIR as Send-Effect?

Q: What is SIR1 ?

This is a reverb device that works with "impulse-responses". Impulse-responses are generated by recording short broadband signals and their corresponding room-reflections. What you get contains the information needed to reproduce the same room with other signals.
Due to technical reasons SIR1 works with a fixed latency of 8960 samples that is compensated for by the VST-host. SIR2 has a zero latency mode .
Sir is a stereo plugin. To take full advantage of stereo impulses for mono signals, you must first convert the track to stereo. You can download impulse-responses here at www.echochamber.ch. There is a great and extensive collection there. It's important though to cut out the initial signal at the beginning of the file (which normally has already been done for you).

Q: Which DAW have Plugin-Latency compensation.

This table is not complete. Without any warranty.

Insert group Insert Sends
Steinberg Cubase SX 1.X X - -
Steinberg Cubase SX 2.X X X X
Steinberg Nuendo 2.X X X X
Steinberg Wavelab 3/4 X - -
Steinberg Cubase 5.1 X - -
Emagic Logic X - -
Magix Samplitude X X X
Cakewalk Sonar with VST-Adapter X X X


Q:How to get "Impulse Responses"?

Look here!

Q: Is a RTAS-Version of SIR available?

No, SIR is only available for the VST-Technology by Steinberg/Pinnacle.

Q:It seems if I move the Impulse Response, SIR can no longer find the file.

SIR refers always to the full path to the File. So if you move the file after you load it into SIR, you have to select the file at the new location again.

Q: the impulse files seem to be .rar files, but SIR seems to be looking for .wav files?

"rar" is a compression file-type. You have to use programs like "winrar" to unpack them and get wav files.

Q:My Sequencer doesn't compensate latency when using SIR as Send-Effect. How do I use SIR as Send-Effect?

Route all tracks to one group. Insert a Sample Delay in this Group-Track. ( for Example AnalogX Sampleslide ). Use 8960 samples Latency.

Changes and Fixes

SIR 1.011

  • some font size problems fixed
  • vst compatibility bug fixed

SIR 1.010

  • "Error 24" bug fixed

SIR 1.008

  • minor bug fixed

SIR 1.007

  • EQ-Bug fixed
  • window size problems fixed
  • possible crash fixed
  • default file option

SIR 1.005

  • lower Latency 16384 --> 8960
  • Stretch
  • reverse
  • +12dB button
  • smooth eq
  • dynamic CPU consumption
  • file selector remembers last location
  • new interface design
  • lower memory consumption
Bug fixes
  • some eq problems removed
  • some wav-import bugs removed

SIR 0.86beta

Features:
  • performance optimised
  • Wave Import 24-32 bit
  • new slider ( fine option with "shift" )
  • FFT EQ for the IR
  • Attack+Time Early Reflections Parameter
  • Auto gain option
  • some internal things
  • incoming Signal stereo width
  • new interface design
  • some sweets
Bug fixes
  • Bypass
  • parameter change
  • some denormal fixes

SIR 0.76beta

  • added stereo routing options
  • list items sorted
  • online help
  • some wav-import bugs fixed ( not all )
  • smaller length value reduce cpu consumption
  • envelope preview
  • small length bug fixed
  • new look
  • bypass function

SIR 0.74beta

  • minor bug fixed

SIR 0.73beta

  • file selector

SIR 0.72beta

  • better dB-resolution
  • performance optimised

SIR 0.71beta

  • minor bug fixed

SIR 0.7beta

  • SIR got significantly faster

SIR 0.61beta

  • crackling-free ASIO latency got tremendously reduced
  • length and resolution of the loaded files are shown
  • problems with umlauts are solved
  • new look

SIR 0.6beta

  • algorithm is 5 times faster
  • values in dB
  • maximum impulse length is now 18 sec
Copyright 2010 Christian Knufinke. VST is a trademark Copyright of Steinberg Media Technologies GmbH. All other trademarks and copyrights are the property of their respective owners.