All times are UTC+01:00




Post new topic  This topic is locked, you cannot edit posts or make further replies.  [ 92 posts ]  Go to page Previous 14 5 6 7 810 Next
Author Message
PostPosted: Thu Dec 17, 2015 6:37 pm 
User avatar

Joined: Wed Nov 19, 2008 7:44 pm
Posts: 1164
Location: Bulgaria
Quote:
Quote:
Is here any ... like lowpass filter , but for the MPX signal . SOmething like 64000 Hz lowpas . Last active signal is at 59 let`s say 60 Khz . SO 64000 is OK.

Or may be something like "Ignore freqs above" but for whole composite ? . This definitely will decrease the CPU load.
Let`s say Ignore above 64000 and slider to be upto 96000 ?Is it a good idea ?
What Bojcha means is in order to construct the analog 75Khz Mpx signal (analog wave form) you have to generate at least 2 samples (digital sample rate) and this is a rock minimum.
So minimal digital sample rate has to be 2 x 75 = 150Khz, but in real life this 150Khz is actualy to less, in order te have a reasonable MPX construction a minimum of 176.4 is advised.
at 192Khz sample rate you get a better and more detailed construction of the 75Khz Mpx signal.
I think you are totally wrong. 150Khz is a deviation at the receiver, 192 Khz is a sample rate in the PC ?! Why you mess up the two things ?
Minimum sample rate required at PC is 128000 Hz , but this mode is supported only in proffesional cards , so next sample rate available on all cards is 176400. This means that you can pass signal upto 88.2 Khz.
The real useful signal ends up at 59Khz (which is the RDS subcarrier + 2Khz deviation of the RDS at the right side. I round this to 60 , so 64 is far enough from the "last useful signal".


Top
   
 
PostPosted: Fri Dec 18, 2015 1:00 am 
Site Admin
User avatar

Joined: Mon Mar 17, 2008 1:40 am
Posts: 11185
120 kHz is theoretically enough (you need more due to filter steepness etc). Anyway, the current 'Ignore high frequencies' already does something like this, also for MPX. So there's no need to do anything more.


Top
   
 
PostPosted: Fri Dec 18, 2015 1:48 am 
Site Admin
User avatar

Joined: Mon Mar 17, 2008 1:40 am
Posts: 11185
Quote:
Quote:
What do you mean by soft???

Soft Is that It Does Not Jump Up and Down So Much

I Think Is More of a Mid/Side Problem I'm Not to Sure.

But It Happens When Both AM C-Quam and Final Limiter Is Enabled.
Do you have the clipper enabled? I just checked the effect of Hard Limit on the Advanced Clipper output and it's nearly nothing. Please note: Hard Limit was designed to be used after the clipper, you shouldn't use it without a clipper or it will pump horribly.


Top
   
 
PostPosted: Fri Dec 18, 2015 2:21 am 

Joined: Tue May 27, 2014 4:09 am
Posts: 46
Yes I Just Find that One Out Today, Thank You for Helping Me, I Really Sure Do Appreciate It. :)

_________________
Fidelity over loudness


Top
   
 
PostPosted: Sun Dec 20, 2015 4:15 am 
Site Admin
User avatar

Joined: Mon Mar 17, 2008 1:40 am
Posts: 11185
7.84 BETA017

Windows 32 bit:
Windows stand alone: http://www.stereotool.com/download/ster ... 84-017.exe
Winamp DSP: http://www.stereotool.com/download/dsp_ ... 84-017.exe
Windows VST 32 bit: http://www.stereotool.com/download/vst_ ... 84-017.dll MIGHT BE BROKEN!

CHANGES:
- Improved non-phase linear HPF filter a bit, it works better when used after other filters now. According to new reports overshoots shown on the Innovonics analyser dropped to about 1-2% when True Bass is set to +7 (which is already very high) at latency 1024 (was 8% in BETA010).
- Fix ASIO support: Only claim the channels that are actually in use, and allow using more than 6. Warning: Not yet thoroughly tested!
- GUI: Disable Composite Limiter slider when Hard Limit is disabled.
- Busy fixing hiccups in VST version in Audition when loading a preset via Audition - might actually have broken VST preset loading! And doesn't work yet. So you might want to wait with using the VST version until this is fixed.
- Changed De-esser default value. It's now disabled by default. This reduces the CPU load of the composite clipper by about 2%. And it's normally not needed anyway.

PREVIOUS CHANGES:
- Made HPF filter for True Bass non-phase linear as well if non-phase linear HPF if used. Note: This does mean that some cancellation can occur above the filter frequency!
- Check if True Bass generates too low subs and if needed add HPF. -> Non-phase linear HPF is done before True Bass, the True Bass signal itself needs to be highpass filtered separately in this case! -> First improvement done, waiting for feedback. -> Much better, some more improvements needed.
121. Automatic "Ignore high frequencies above" frequency selection. 19200 for composite, maximum lowpass freq + something for others.
- Fix PNR for VST plugins (at least partial fix).
- Add backup sound card support (sound card 1 switches to 2 after some silence).
- Bug fix: Non-phase linear de-emphasis was killing BS412.
- Bug fix: Synchronization to external RDS signal could sometimes have a hiccup due to a threading issue.
- Show a warning when someone enables non-phase linear de-emphasis. Among others about peaks!
- Add function to Get parameter values for Generic plugin version
- Added 8 times oversampled non-phase linear Butterworth de-emphasis to match some hardware unit's pre-emphasis behavior.
- Some filter to clean up ringing artifacts when using steep bandpass filters contained an error which caused some clicking effects, mainly in low bass (This bug has probably been there since version 5.00!).
- BS412 didn't calculate the level correctly when using left/right output instead of MPX output, and when 'Pre-emphasized output' was not enabled. Fixed. This can have a big effect!

BUSY:
- Fix hiccups in stand alone version at 44.1 kHz reported by Benny -> Cause was a Sync problem with Extra Delay set to a value more than the size of the buffer below 0. Also the difference between the sound cards used is more than 1%, which is kinda insane.
- Adding option to share band split/merge between multiple filters (starting with 2 MB's). This should reduce the CPU load a bit, but so far that doesn't really seem to be the case (14.5% to 14.3%).
- Fix GUI-related hiccups in VST in Audition reported by Ted - for BETA016 he also reported now that the audio is different when loading via VST host! - 018 set, waiting for feedback - no still didn't fix it. Grrrr... Waiting for Audition settings.

TODO:
- ASIO: Changed default channels to disabled except for Normal Output and Input.
- ASIO: Add more output selections - Increased from 8 to 32
- True Bass: Maybe make HPF depend on selected peak frequency? Might not be needed, BETA017 seems to be ok. - Done, also added an extra phase linear HPF for higher latencies.
- Auto freq should be 19200 for Composite with Stokkemask, otherwise normal calculation! So check Stokkemask + Composite instead of just Composite.
- GUI: Add disabling of MPX display -> Connected to waveform display
- Add new presets
- GUI: Weird jump in scopes when using Ignore High Frequencies and view size is 10 seconds when moving in/out of scope panel.
- O Skin

LATER:
- ASIO bufferChanged call watchdog doesn't work (and probably never has). -> Confirmed, not urgent then. Can be part of redesign.
- ASIO number of channels in GUI should actually be dynamically set
- Add a warning for the negative Extra Delay value that's bigger than (or almost as big as) the buffer size??

PERFORMANCE MEASUREMENT RESULTS (values shown in GUI, so on one core):
- Nothing: 0.1% With Overhead (top CPU load indicator): 0.6%
- AGC 1 band: 0.4%
- AGC 2bands: 1.1%
- AGC 3bands: 1.4% --> So 0.3% per band, 0.4% extra when switching on multiple bands. That 0.4% must be the cleanup filter.
- Stereo Boost: 1.6%
- ACR Stereo: 0.6%
- Stereo Image: 0.3%
- AZIMUTH: 0.4%
- ND 9 bands: 2.1%/2.2%
- Noise Gate: 1.7%
- Declipper: 2.3%
- Phase Rotation: 0.2%
- Phase Delay: 0.3%
- True Bass 2 bands: 1.6%
- MB1 9 bands digital: 4.2%
- MB1 9 bands analog: 2.5% --> Weird, uses more than ND!!! That's unexpected since ND is based on Digital mode.
- MB1+2 9 band analog combined: 4.8%
- MB1+2 9 band analog split: 4.8%
- MB2 9 bands analog: 2.9% (raar)
- Bass Boost: 0.8%
- Singleband digital: 1.0%
- Singleband analog: 0.6%
- Advanced Clipper: 3.7% (met de-esser?)
- FM RDS/Stereo: 0.4%
- Advanced Clipper: 3.5%
- FM + Advanced Clipper: 3.7%
- FM + Advanced Clipper + Pre-emphasis: 3.7%
- FM + Advanced Clipper + Pre-emphasis + Stereo + RDS: 3.7%
- Same with Composite Clipper: 10.1%
- Strictness at 5 instead of 8: 7.5%
- With Stokkemask: 13.3%


Top
   
 
PostPosted: Sun Dec 20, 2015 4:33 am 

Joined: Wed Nov 20, 2013 6:42 pm
Posts: 54
Stand alone and DSP version are 404. VST downloads.


Top
   
 
PostPosted: Sun Dec 20, 2015 5:20 am 

Joined: Sun Feb 10, 2013 6:58 am
Posts: 152
Location: Sydney, Australia
Hans,

stereo_tool_standalone_installer_BETA7.84-017.exe not found.

Removed the . from BETA7.84-017 to BETA784-017 and it worked.
C.


Top
   
 
PostPosted: Sun Dec 20, 2015 12:26 pm 
Site Admin
User avatar

Joined: Mon Mar 17, 2008 1:40 am
Posts: 11185
Oops! Links are fixed now, sorry.


Top
   
 
PostPosted: Sun Dec 20, 2015 1:27 pm 
User avatar

Joined: Wed Nov 19, 2008 7:44 pm
Posts: 1164
Location: Bulgaria
I cannot find what de-esser is now disabled . In the Advanced clipper ? There is no checkbox for "disabling"


Top
   
 
PostPosted: Sun Dec 20, 2015 2:49 pm 
User avatar

Joined: Tue Mar 17, 2009 2:56 pm
Posts: 4151
Quote:
I cannot find what de-esser is now disabled . In the Advanced clipper ? There is no checkbox for "disabling"
At max (or right click) = Disabled

_________________
control point
control point2


Top
   
 
Display posts from previous:  Sort by  
Post new topic  This topic is locked, you cannot edit posts or make further replies.  [ 92 posts ]  Go to page Previous 14 5 6 7 810 Next

All times are UTC+01:00


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Limited