How can I use the other 3rd party ditherings other than the 5 ones Sonar provided in Sonar Producer?

e.g. add sth FX VST like into the process between the last process or last fader of the last bus or last output and the offline bouncing exports or realtime to the speakers playback, so how can I do?

Third-party dither algorithms are either going to be in the form of a VST plugin that goes at the end of your signal chain on the master bus, or as an external, offline program.

Don't fret over it, though. The included dither algorithms are just fine.

bitflipper


Third-party dither algorithms are either going to be in the form of a VST plugin that goes at the end of your signal chain on the master bus, or as an external, offline program.

Don't fret over it, though. The included dither algorithms are just fine.

oh but any quantizing distortion problems to place a dithering VST in pre-fader position?
Because I've tried to place a dithering in a pre-fader slot in Cubase would make the sounds distorted that sightly different from placing in a post-fader slot

Dither should not cause distortion under normal circumstances. In fact, the effect of dither is usually completely inaudible except in very quiet passages or fadeouts. More likely, the plugin was just distorting due to too high a level coming in, as some plugins can do.

Dither should always be the very last thing to happen to your song, except for the master fader (which is usually set to unity and therefore not actually doing anything).

bitflipper


Dither should not cause distortion under normal circumstances. In fact, the effect of dither is usually completely inaudible except in very quiet passages or fadeouts. More likely, the plugin was just distorting due to too high a level coming in, as some plugins can do.

Dither should always be the very last thing to happen to your song, except for the master fader (which is usually set to unity and therefore not actually doing anything).

So that's meaning placing the dithering step before the master bus fader would never degrade or injure the sounds exported?

No, it would not. In fact, placing a fader after the dither would be counter to what dither fixes in the first place.

Bear in mind that dither is not necessary at all unless you're exporting to a lower bit depth, e.g. from 32-bit float to 16-bit integer for burning a CD.

bitflipper


No, it would not. In fact, placing a fader after the dither would be counter to what dither fixes in the first place.

Bear in mind that dither is not necessary at all unless you're exporting to a lower bit depth, e.g. from 32-bit float to 16-bit integer for burning a CD.

So how about the UV22HR, IDR and MBit+?
 
And also when your audio data have been converted up to a higher bit depth like 32bit or 64bit before going through to any processing e.g. resampling, mixing, or any effecters and then export back to its original bit depth, just like the 64bit float mixing engine in Sonar, then you would need dithering too, because your sample values are changed and processed when a higher bit depth and then back down. That's why so many people alway say that dithering is always the essential last step for the most commercial audio products.

But after dithered the audio would sounds a little narrower than the original, so a stereo imager is always essential to be placed before the dithering to widen the sound stage so the sound stage after dithered would be remained at least same as the original. e.g. In Waves S1 stereo imager, the "wide" at least need to be set to 1.2 (when 1 = stay unchanged)

No, dither is not necessary when converting to a higher bit depth or exporting to the same depth, only when going to a lower bit depth.

Dither will not affect width perception. If you're hearing a narrowing of the stereo image, something else is going on; it's not the dither.

Before you get too far off into dither-land, I'd recommend reading up on just what dither is and does. Once you understand its role in the scheme of things, many other things will come into focus as well. But I'll jump ahead to the last page of that tutorial: dither is way too trivial to worry about.

Nope, I'm not meaning dithering would narrow the soundstage width, but down sampling by truncating the last least digis do.
Just because e.g. 24 to 16, the last 8bit are lost that containsome parts of the important sound content details those telling our ears and our brains about the important information that how wide are the sounds and the exact postions of the sounds. It's just narrowed a very little bit but not much, even sometimes only when you make an A/B comparative experiment then you would hear out. So just a little wider before the dithering (if necessary) and truncation and yes, only when going to a lower bit depth need to widen the soundstage a little bit.

I've tested, just truncate a 24bit audio down to 16bit and the soundstage is really sightly a little bit narrower, but I swear all the sounds, audio sources, track settings, FX effects settings and bus settings are all exactly the same and absolutely nothing different except the truncation (even still without any dithering).

But widening sound image is just a very little bit to just restore the soundstage of the original 24bit to the truncated 16bit output, and really can't over widening, because whe you widen more the sounds, the front-back depth of the soundstage would decrease so be ware to not over used.