Tore Henning Tveter web site
"Compressor" with none pumping
An old idea' new components
Once I came to start a discussion about the fact that most audio compressors sold today unfortunately chop (pump) when working.
This is a problem that many professionals in the audio industry struggle with.
Suddenly I remembered an electronic circuit from
another project that I used to test for a sound element.
I discovered that this sound compressor could compress up to 24dB without pumping.
As a sound source I used a woman's voice (hello lady) from the radio (SR P3) was very surprised....
Compressing to the max, so much so that I heard "hello lady" breathing hard between words.
So I promised my friend a very attractive Swedish recording engineer to build 2 copies in 19" rack format.
The first one was finished at Christmas time 2010 and the feedback was very positive "No audible chopping"
Currently I have 2 copies in my own studio.
One of these was later developed for parallel compression.
The circuit diagram below show the Compressor ver. 3.0 Driver Principle.
Component layout PCB Compressor ver 3.0
Later I found out that I should make some changes.
Usually, when you compress a male or a female voice you feel that some of the top frequencies are lost.
I designed therefore a new model where one could choose the transition frequency.
3 Choice between 9kHz, 12 kHz and 15kHz as well as the volume HF
As you can see the compressor isn't ready wired yet....
ITHT PCB Card (2 sides through plated)
These pictures below show the other variant. Unwired 1 Unit inside 19" rack
Compressor ver 10.0 for paralell compressing
