SlickEQ – some more release info

Just a couple of days ago we introduced the upcoming release of SlickEQ and lots of questions raised already. So, here is what Fabien already committed about it in a public forum:

  • Win/Mac, AU/VST2/VST3 (+AAX planned and in process), x32/x64
  • No linux builds planned, sorry.
  • The name is “TDR VOS Slick EQ” and it will be available for free.
  • Release is a matter of days. Maybe a week or two.

As of today I just want to add: With the introduction of TDR VOS SlickEQ, quite a number of amazing and previously unheard DSP algorithms will see the light of day – including (but not limited to) several Stateful Saturation algorithms running within an audio signal path entirely upsampled to a constant high sample rate for maximum precision.

Expect smoothness, best-in-class.

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processing with High Dynamic Range (3)

This article explores how some different HDR imaging alike techniques can be adopted right into the audio domain.

The early adopters – game developers

In the lately cross-linked article “Finding Your Way With High Dynamic Range Audio In Wwise” some good overview was given on how the HDR concept was already adopted by some game developers over the recent years. Mixing in-game audio has its very own challenge which is about mixing different arbitrary occurring audio events in real-time when the game is actually played. Opposed to that and when we do mix off-line (as in a typical song production) we do have a static output format and don’t have such issues of course.

So it comes as no surprise, that the game developer approach turned out to be a rather automatic/adaptive in-game mixing system which is capable of gating quieter sources depending on the overall volume of the entire audio plus performing some overall compression and limiting. The “off-line mixing audio engineer” can always do better and if a mix is really too difficult, even the arrangement can be fixed by hand during the mixing stage.

There is some further shortcoming and from my point of view that is the too simplistic and reduced translation from “image brightness” into “audio loudness” which might work to some extend but since the audio loudness race has been emerged we already have a clear proof how utterly bad that can sound at the end. At least, there are way more details and effects to be taken into account to perform better concerning dynamic range perception. [Read more…]

processing with High Dynamic Range (2)

This comprehensive and in-depth article about HDR imaging was written by Sven Bontinck, a professional photographer and a hobby-musician.

A matter of perception.

To be able to use HDR in imaging, we must first understand what dynamic range actually means. Sometimes I notice people mistake contrast in pictures with the dynamic range. Those two concepts have some sort of relationship, but are not the same. Let me start by explaining in short how humans receive information with our eyes and ears. This is important because it influences the way we perceive what we see and hear and how we interpret that information.

We all know about the retina in our eyes where we find the light-sensitive sensors, the rods and cones. The cones provide us daytime vision and the perception of colours. The rods allow us to see low-light levels and provide us black-and-white vision. However there is a third kind of photoreceptors, the so-called photosensitive ganglion cells. These cells give our brain information about length-of-day versus length-of-night duration, but also play an important role in the pupillary control. Every sensor need a minimum amount of incitement to be able to react. At the same time all kind of sensors have a maximum amount that they may be exposed to. Above that limit, certain protection mechanisms start interacting to prevent damage occurring to the sensors. [Read more…]

processing with High Dynamic Range (1)

Back in time when I was at university, my very first DSP lectures were actually not about audio but image processing. Due to my interest in photography I followed this amazing and ever evolving domain over time. Later on, High Dynamic Range (HDR) image processing emerged and beside its high impact on digital photography, I immediately started to ask myself how such techniques could be translated into the audio domain. And to be honest, for quite some time I haven’t got a clue.

MM

This image shows a typical problem digital photography still suffers from: The highlights are completely washed out and so the lowlights are turning into black abruptly w/o containing further nuances  – the dynamic range performance is pretty much poor and this is actually not what the human eye would perceive since it features both: a higher dynamic range per se but also a better adoption to different (and maybe difficult) lighting conditions.

On top, we have to expect severe dynamic range limitations in the output entities whether that’s a cheap digital print, a crappy TFT display or the limited JPG file format, just as an example. Analog film and prints does have such problems in principle also but not to that much extend since they typically offer more dynamic resolution and the saturation behavior is rather soft unlike the digital hard clipping. And this is where HDR image processing chimes in.

It typically distinguishes between single- and multi-image processing. Within multi-image processing, a series of Low Dynamic Range (LDR) images are taken in different exposures and combined into one single new image which contains an extended dynamic range (thanks to some clever processing). Afterwards, this version is rendered back into an LDR image by utilizing special  “tone mapping” operators which are performing a sort of dynamic range compression to obtain a better dynamic range impression but now in a LDR file.

Within single-image processing, there must be one single HDR image already available and then just tone mapping is applied. As an example, the picture below takes advantage of single-image processing from a RAW file which typically does have much higher bit-depth (12 or even 14 bit as of todays sensor tech) opposed to JPG (8 bit). As a result a lot of dynamic information can be preserved even if the output file still is just a JPG. As an added sugar, such a processed image also translates way better over a wide variety of different output devices, displays and viewing light conditions.

MM-HDR

announcing the “Slick” audio plug-in series

About history

In recent history, I’ve constantly extended and improved my Stateful Saturation approach and within ThrillseekerVBL I’ve managed to introduce authentic analog style sounding distortion right into VST land, which is what I’ve always had in my mind and dreamed of. And there’s so much and overwhelming feedback on that – thank you sooo much!

Best of both worlds

Since quite a while, I’ve dreamed about a brand new series of plug-ins which will combine the strength of both worlds: analog modeling on the one side but pure digital techniques on the other – incorporating techniques such as look-ahead, FIR filtering or even stuff that comes from the digital image processing domain, such as HDR (High Dynamic Range) processing.

First encounter: SlickHDR

High Dynamic Range (HDR) processing is something pretty much new in the audio domain. While there are lots of theories and implementations available about HDR imaging, this is quite new and sparingly adopted in the audio domain. SlickHDR is going to be a very first approach in applying high dynamic range processing to audio within a VST compatible plug-in.

released: ThrillseekerVBL – Vintage Broadcast Limiter

VOS_Logo_VBBringing mojo back – Thrillseeker VBL is an emulation of a “vintage broadcast limiter” following the classic Variable-Mu design principles from the early 1950′s. They were used to prevent audio overshoots by managing sudden signals changes. From today’s perspective, and compared to brickwall limiters, they are rather slow and should be seen as more of a gain structure leveler, but they still are shining when it comes to perform gain riding in a very musical fashion – they have warmth and mojo written all over.

Thrillseeker VBL is a “modded” version, which not only has the classic gain reduction controls but also grants detailed access to the amount and appearance of harmonic tube amplifier distortion occurring in the analog tube circuit. Applied in subtle doses, this dials in that analog magic we often miss when working in the digital domain, but you can also overdrive the circuit to have more obvious but still musical sounding harmonic distortion (and according side-effects) for use as a creative effect.

On top, Thrillseeker VBL offers an incredibly authentic audio transformer simulation which not only models the typical low-end harmonic distortion but also all the frequency and load dependent subtleties occurring in a transformer coupled tube circuit, and which add up to that typical mojo we know from the analog classics. This would not have been possible with plain waveshaping techniques but has been realized with my innovative Stateful Saturation approach, making it possible to model circuits having a (short) sort of memory.

ThrillseekerVBL is a freeware VST audio plug-in for Windows x32 and you can download a copy in the Downloads section.

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VBL – final teaser & release info

vintage, broadcast, limiter

ThrillseekerVBL will be released 1st of July 2013 as a freeware VST audio plug-in for Windows x32.

announcing Thrillseeker VBL – Vintage Broadcast Limiter

Bringing mojo back – Thrillseeker VBL is an emulation of a “vintage broadcast limiter” following the classic Variable-Mu design principles from the early 1950’s. They were used to prevent audio overshoots by managing sudden signals changes. From today’s perspective, and compared to brickwall limiters, they are rather slow and should be seen as more of a gain structure leveler, but they still are shining when it comes to perform gain riding in a very musical fashion – they have warmth and mojo written all over.

Thrillseeker VBL is a “modded” version, which not only has the classic gain reduction controls but also grants detailed access to the amount and appearance of harmonic tube amplifier distortion occurring in the analog tube circuit. Applied in subtle doses, this dials in that analog magic we often miss when working in the digital domain, but you can also overdrive the circuit to have more obvious but still musical sounding harmonic distortion (and according side-effects) for use as a creative effect.

On top, Thrillseeker VBL offers an incredibly authentic audio transformer simulation which not only models the typical low-end harmonic distortion but also all the frequency and load dependent subtleties occurring in a transformer coupled tube circuit, and which add up to that typical mojo we know from the analog classics. This would not have been possible with plain waveshaping techniques but has been realized with my innovative Stateful Saturation approach, making it possible to model circuits having a (short) sort of memory.

Release date is not yet confirmed but most probably will be in May this year.

what I’m currently working on – Vol. 9

Updates and a brand new release, basically. Since there is a minor issue with the latest TesslaPRO and Rescue versions concerning higher sample rate compatibility, I’m currently into bug-fixing and both will probably make it upfront the summer break. As the next major update you all voted FerricTDS to be the object of desire and I’m already sketching things on the drawing board but developments might not start before Q3.

I’m constantly extending and improving my Stateful Saturation approach and the next incarnation will bring authentic analog style distortion into VST land. It is basically a Variable-Mu based broadcast limiter design from the early days but which is modded to have detailed access to the amplifier distortion – it has warmth and mojo written all over! Patrick also joined in again and will perform his magic user interface artwork. An official announcement will appear very soon, so stay tuned.

Unfortunately, there are no news about 64bit support atm.

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what next?