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Suroounder Helper Plug-ins  
 
 

Surrounder Helper plug-ins aim at giving artists and producers the tools to facilitate signal processing in surround sound productions with mainstream Digital Audio Workstation (DAW) software like Steinberg Nuendo or Cubase.

VST Host Application Compatibility

Audio Unit Host Application Compatibility

The Surrounder Helper plug-ins are made with SonicBirth, a visual dataflow programming language for the creation of Audio Unit and VST plug-ins for OS X.

The Surrounder Helper plug-ins, and the information on this page, are provided as is, without any guarantee regarding performance or end result.

 
Download
Updated on November 1, 2011

Surrounder Helper VST & Audio Unit
Universal binaries for OS X, 32 bit

Warning:

SonicBirth 1.3.1b2 is compatible with OS X 10.4 to 10.11.

 



Surrounder Helper • 5.1 Mix Masher

 

 

The 5.1 Mix Masher is used to modify the spatial attributes of a 5.1 surround stream. This 5.1 surround stream can be a complete mix or only part of a mix (stem). It can be acoustic in origin (microphone capture) or synthetic, or a combination of both.

The 5.1 Mix Masher has six inputs and six outputs. Because of its internal complexity, the 5.1 Mix Masher can take some time to load in the host application.

Input Order
To select the order in which the channels are presented at the plug-in input. Three widely used channel arrangements are available: L R C Lfe Ls Rs (Nuendo, Cubase), L C R Ls Rs Lfe (Pro Tools), L R Ls Rs C Lfe (Logic) and C L R Ls Rs Lfe.

Lfe Level
Since the Lfe channel is non-directional, it completely bypasses the spatial processing and is re-introduced before signal output. It's possible though to control its level with a range of - 24 to + 6 dB. Default to 0 dB, no level change.

Input Mute
To mute at the input, grouped by channel type: LR, C, LsRs. The muted channels will be stopped here and will not go further in the plug-in. Default to Off, no mute.

DSP Bypass
To bypass the spatial processing, grouped by channel type: LR, C, LsRs. The selected channels will go through, unprocessed, and be available at the plug-in output. Default to Off, no bypass.

Output Mute
To mute at the output, grouped by channel type: LR, C, LsRs. Default to Off, no mute.

Output Order
To select the order in which the 5.1 channels are presented at the plug-in output. Three widely used channel arrangements are available: L R C Lfe Ls Rs, L C R Ls Rs Lfe, L R Ls Rs C Lfe and C L R Ls Rs Lfe.

Spatial Processing
The spatial processing will only use input channels that are not muted or bypassed. When all spatial processing controls are at their default settings, no substantial difference from the unprocessed stream should be heard.

First section

  • Rotation: to rotate the channels. Default to 0, no rotation.
  • F/B Flip: to flip the channels on the front-back axis. Front becomes back and back becomes front. Default to Off, no flip.
  • L/R Flip: to flip the channels on the left-right axis. Left becomes right and right becomes left. Default to Off, no flip.

Second section

  • Level: to control the level with a range of - 24 to + 6 dB, grouped by channel type: LR, C, LsRs. Default to 0 dB, no level change.
  • Zoom: to control the channel "zoom", grouped by channel type: LR, C, LsRs. At its maximum setting of 1, the zoom will be at its tightest: the processed channel will mostly include the original channel information. At its minimum setting of 0, the zoom will be at its widest: the processed channel will still include the original information, but also a lot of audio information from the adjacent channels. The Zoom control is gain compensated so that the audio level should remain relatively stable as the zoom is modified: the actual performance of this gain compensation depends on the audio material and the amount of correlation between channels. Default to 1, maximum zoom.
  • Spread: to control the spread of stereo pairs, namely the Left-Right pair and Ls-Rs pair. At the -1 setting, the pair is tighter with the subtended angle being smaller than the original. At the +1 setting, the pair is wider with the subtended angle being larger than the original. Default to 0, no stereo spread modification.
  • Delay: to add a delay to the Ls-Rs pair. Can be useful for augmenting the front-back separation. From 0 to 35 ms, default to 0 ms, no delay.
  • Enhanced Mode: to add a psychoacoustic EQ for enhancing the spatial rendering. The perceptual impact of the Enhanced Mode is dependent on the Zoom control and will have more impact at lower Zoom settings and probably will have no perceptual impact at high Zoom settings. Default to Off.

Surrounder Helper • Signal Router

 

 

The Signal Router has two main functions: change the channel order when used in surround and do a straightforward stereo downmix with no phase shift.

The Signal Router has six inputs and six outputs to handle 5.1 audio streams.

Input Order
To select the order in which the 5.1 channels are presented at the plug-in input. Three widely used channel arrangements are available: L R C Lfe Ls Rs (Nuendo, Cubase), L C R Ls Rs Lfe (Pro Tools), L R Ls Rs C Lfe (Logic) and C L R Ls Rs Lfe.

Mute
To mute the signal, grouped by channel type: LR, C, Lfe, LsRs. Default to Off, no mute.

Level
To control the level with a range of - 24 to + 6 dB, grouped by channel type: LR, C, Lfe, LsRs. Default to 0 dB, no level change.

Downmix | Output Order
To select the type and order in which the 5.1 channels are presented at the plug-in output. The Stereo setting does a simple stereo downmix (L to left, R to right, C to center, Lfe to center, Ls to left and Rs to right). In the surround settings, three widely used channel arrangements are available: L R C Lfe Ls Rs, L C R Ls Rs Lfe, L R Ls Rs C Lfe and C L R Ls Rs Lfe.

 

 


OS X audio utility downloads

X Lossless Decoder (XLD): utility for converting files to and from FLAC (.flac/.ogg), Monkey's Audio (.ape), Wavpack (.wv), TTA (.tta), Apple Lossless (.m4a), AIFF, WAV. Files can be multichannel if supported by file format.

Scott Wilson's De-Interleaver: utility for interleaving and de-interleaving audio files. Can be useful to handle surround sound files, direct download.


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