so, whats on the horizon?

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After a rather frosty start into 2010 everything is slowly warming up here again and of course all the audio plug-in connoisseurs out there – aka gearslutz aka you – deserves some more answers on the stuff that really matters: Where are the updates, whats next and more important when and obligatory: why no [add your favourite vintage brand here] emulation? [Read more…]

NastyXTC – Vaporware?

Some folks are asking me from time to time if and when the NastyXTC thingy will ever see the public light. Atm, the short answer still is: I really dunno.
While the original NastyXTC design was mainly a transient EQ sort of thing, I extended it concept wise to become a rather complete “transient workbench” solution in a small but flexible modular effects system. Despite of the amount of work necessary to accomplish this, there are still some essential and fundamental technical concepts not yet really explored by me. [Read more…]

Tape: the final frontier?

The concept of magnetic recording to a moving tape was invented by the German-Austrian engineer Fritz Pfleumer and received a patent back in 1928. The basic idea was to translate the voltage from the audio signal straight into magnetic energy, which then induces magnetic particles on a tape (moving along the inductor at constant speed). These particles manage to store the audio information. The whole process goes the other way around for recall.

[Read more…]

compressor gain control principles

A short compendium on digital audio compression techniques.

Basic compressor configurations

Compression vs. limiting

Technically speaking the same principles are used in audio signal limiting and compression processors but just the transfer curves and envelope follower settings are different. Ultra fast attack rates and high ratio amounts are used for limiting purposes which causes just very few peaks to pass on a certain threshold.

In digital implementations limiting processors can be more strict due to look-ahead and clever gain prediction functions which guarantees that no peak information passes the threshold. That is called brickwall limiting then.

[Read more…]

the compressors sidechain: filtering

freqThere were already an excursion here about the design of compressor transfer curves over here and now this article turns on to the design of the sidechain path of a compressor in general. One major part of the sidechain design of a compressor is the filtering and thats the topic here for now. [Read more…]

released: TesslaPRO – a transient aware signal saturator


TesslaPRO, a transient aware signal saturator, is released by now as a VST audio plug-in for PC/Win compatible systems. [Read more…]

the magic is where the transient happens

Transients and so on

This article could have been an esoteric one but then it would probably be titled as “the magic is where the change happens” or something like that. Don’t worry, this is just about some findings and myth on audio transient processing and it’s, errm, reincarnation in the upcoming TesslaPRO VST audio plug-in. [Read more…]

TesslaPRO revealed



[Read more…]

soft-knee compression and beyond


transfer curves

Beside the envelope design for the control signal the compressors transfer curve is the most influencing part speaking in terms of the resulting sound impression. If we ignore any time dependend behaviour of the compressor for the moment then it basically works like this: Signals at a level below a certain threshold are passing through the device unaltered. Reaching the threshold level the input signal gets lowered by a certain ratio.  The result is a so called “hard-knee” transfer curve. [Read more…]

what I’m currently working on – Vol. 2

I’m now taking some longer time for research and development which is actually the job I really like the most. Digging into some new DSP papers, drawing new circuit concept ideas and setting up some code for a proof of concept – thats almost like vacation to me. I’m already into some interesting new work in the area of saturation but there is another thing which is itching me more and more since a while. [Read more…]