Stereo Tool

Hello Hans


The last version of the program is optimal. In the evening yet verification on a transmitter. The plastic sound of
bass disappeared all is perfect!

Question? On what transmitter conducted test. What receiver? What acoustic systems? What analyzer of spectrum?

Does the program work with professional transmitters and it is possible to hear this signal over the internet?


You will excuse I badly own English....

Soundmanfm

The program successfully worked on transmitters. stereo coder Off!!!!! Not signal RDS

RT-FMS-1001.1 TRANSMITTER Vigintas Elektronika
http://www.vigintos.com/vigintos/vigint ... tters&id=6

TXFM-1000 stereo coder ON!!!!! signal RDS OK!

http://www.kvant-efir.com.ua/ru/product ... adio.shtml

Test for TELEFUNKEN TRANSMITTER 500 FM Verification goes stereo coder Off!!!!! Not signal RDS



While I do not know an exact model.

I just found a bug in the AGC that's both causing a mid/high frequency volume drop in the "Beyonce - Video Phone" track, and causing the volume to go down more for loud vocals in the Celine Dion song

Fixing that combined with a 2-step AGC will give really good results... (But it's a bit complex to make, because of the pre-ringing issues. Actually I think there's a bug in the pre-ringing removal since I moved away from using the RMS volume!)

When i use gating with AGC, it only gates the first band not the second and third is this correct?

That would be a bug.... (For the 3rd band it's ok, because it can never get higher than band 2 anyway)

lol...keep at it hans youll fix it.
( nothing can surpass the all might stereotool )

The waiting is killing me

Sounds like you're just as addicted to this as I am

I wanted to post an update when everything is working correctly, but I'll post an intermediate version tonight so you can see where things are going. With this version it's already possible to get this more constant volume level.

i already make some changes in multiband and i get good results ..

timings for up/down speed are key. It's little difficult because numbers.

Updated version, uploaded as BETA2.

- VST versions don't work
- In the Pre Limiter window, there are now 2 AGC's!
- AGC behavior is changed around the place where the AGC started to reduce the volume before. Now it starts a lot earlier, but the effect grows smoothly. This does mean that input tracks around the configured target output level will come out a lot softer now! But at least all tracks at the same input level should now come out at the same output level. This also impacts the output RMS volumes: They are now about slightly more apart if the input level is different. (But I think the benefits outweigh this small disadvantage).
- If you turn BOTH AGC's on, the output level is too low! So set the target output level (for BOTH AGC's!) higher. This is caused by the new behavior with input level near the configured target level: The 1st AGC outputs audio near the target level, so the 2nd reduces the volume further.

Suggested settings for good results, starting from the default settings:
- Turn BOTH AGC's on
- For the FIRST, set 'down speed' at 1 pixel above the minimum value. Set 'up speed' a bit lower than the default level. Set 'Remove remaining peaks above..." to 250%.
- For the 2nd, set 'down speed' around the default value (maybe slightly higher, .0004 instead of .0003, but not much higher than that). Set the 'up speed' slider a lot higer, near .00001. Set "Remove remaining peaks" around 150%.
- To compensate for the lower output level, set BOTH "target level" sliders higher - around 1.5 times the original value.

Basically, use the 1st AGC to slowly move to the correct level.
Then use the 2nd to reduce too loud sounds etc, and also to quickly increase the volume after a loud sound that caused both AGC volumes to drop (the first not that much - the 2nd should be able to 'fill the gap' --> Loud voice --> ALL frequencies dropped a bit --> Loud voice ends, AGC1 volume only increases very slowly, AGC2 volume increases rapidly but only by a small amount, but big enough to hide the volume reduction of the 1st.)


Note: For best results (least effect of loud voices), do NOT enable ITU-1770!


URL's:
Winamp DSP plugin: http://www.stereotool.com/download/dsp_ ... _BETA2.exe
Stand alone version: http://www.stereotool.com/download/ster ... _BETA2.exe
VST version: http://www.stereotool.com/download/vst_ ... _BETA2.dll NOT AVAILABLE
VST version (No SSE2): http://www.stereotool.com/download/vst_ ... _BETA2.dll NOT AVAILABLE
Command line version: http://www.stereotool.com/download/ster ... _BETA2.exe


Known issues at this point:
- Too low output level if 2 AGC's turned on
- Absolute silence (0's in the input) cause loud cracks (probably division by 0 somewhere)
- New values are not yet saved to disk!


(Note to Michi: Next version will be BETA3, then BETA3A... After that I'll have to change my scripts to generate new ### version numbers.)