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Milky
KeymasterI don’t think I have ever seen 3 buffers come up in the wizard – always 4 for both in and out. I actually wondered why there was an option to change down from 4.
Milky
KeymasterI’ve done some more research on this on the VAC website. In one section, it says that low numbers should be avoided, but elsewhere it says “The more is event frequency, the shorter is event period, the less is block size, the smoother is stream transfer, and the less is latency. But decreasing interrupt/event period causes increase of system timer resolution and timer interrupt frequency so system overhead is increased too. VAC driver sets system timer resolution to a half of the “MS per int” parameter specified.
Large (more than 10-15 ms) values may significantly disrupt stream uniformity and even cause stream breaking.”
I guess if you have a “grunty” PC, low (1 to 5) will work OK, but throw a greater load on the OS. Higher (10-15) may reduce the OS load, but could let too many other events get in the way of a smooth stream.
Milky
KeymasterNow that is very interesting. I believe that Leif launches VAC using command line switches, and this maybe where it is getting that parameter from. I’ll see if the command line can be modified.
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This reply was modified 4 months, 1 week ago by
Milky.
Milky
KeymasterGlad to hear that you have made some progress. WHat happens if you just run the BAE wizard now and let it figure out the best buffer size? Sometimes, you can get too hung up on trying to manually tweak the parameters. So long as you can’t hear any artefacts like crackling in the background, a bit of jitter is normal. If you go overboard with large buffers, you will have problems with lip-synching with your karaoke videos because BAE will fill the buffers before doing any processing.
My son and I both have identical laptops, yet his settings are slightly different from mine. I assume its a firmware or chip revision thing, but I’ve never really looked into it.
Milky
KeymasterAs with any preset, its effectiveness works better with certain genres. For instance, a station playing only classical or country music would respond better to some presets over others.
What type of music do you mostly play?
Milky
KeymasterSometimes, to uninstall the Pipeline, you need to go into Device Manager and remove the actual Pipeline (after you have run the regular uninstall). It seems to have a service which needs to be unloaded manually.
Milky
KeymasterI didn’t really provide much of an answer. As an electronics engineer, I used to live with the small delays that analogue equipment imposed on the broadcast queue from desk > STL transmitter > STL receiver > final transmitter. We used to listen back from the desk via headphones connected to an AM/FM receiver, just to prove that we were ACTUALLY on-air (I have a funny story about this, if you are interested).
Now that the audio from the source (like the presenter’s mic) goes through microphone processors, Orbans, Optimods, Breakaway or some sort of after-procsesing, the “what you hear in the studio) is bound to be delayed.
Milky
KeymasterI doubt that it is EVER possible to get 0 delay when the audio has to be processed through ASIO plus Breakaway, plus any overheads introduced in the MPX process. If your STL distance is significant (like 5 kilometres), there will be a noticable delay if you listen off-desk compared to off-air.
Milky
KeymasterThey are truly amazing (ly bad) numbers, especially for the Realtek, which is a very common chip in thousands of computer boards. I get 11% for the Pipeline and 5% for the Realtek output, both using DS.
As a last reort, have you tried uninstalling – re-installing Breakaway and all of its components?
Milky
KeymasterObviously, using another device to give you some more control over the levels (a bit like using a mixer channel or Distribution Amplifier). Many radio stations have a DA rack in the control room to tweak all of the sources to a similar level. However, it intoduces yet another source of noise, distortion and breakdown failure risk.
Milky
KeymasterUnusual that two sound devices should be so different. They are usually set to a defacto output which is similar from device to device.
I know that you can provide input gain (HD core > Misc > I/O > Main Input > Input Gain). Does this help?
Milky
KeymasterJust to eliminate the Behringer, can you route BAE to your internal sound or some other device?
What happens if you ignore the Wizard’s settings and play around with the buffer settings manually? Usually, a buffer size in multiples of the sample rate works best (as in your 882), but sometimes, if the sound card has unusual frame geometry, a different buffer size works better. Start at 441 and run the test for each setting after that.
Milky
KeymasterOK, let’s start over and see if we can figure this out.
In my situation, my playout software has the option to choose Pipeline1 as its output. I assume that your karaoke software should have a similar option to route its output.In BAE, I have the input as Pipeline1, KS, buffer 960/4 48000
The output for this exercise is my laptop Realtek speakers, KS, 960/4 48000In Windows, I have made sure to also select output properties to be 16 bit/48000.
When I run the Test option in BAE, I get an input jitter of 10% for the pipeline and 3% for the Realtek driver.
Please try to draw comparisons with your setup and let me know the figures you get.
Milky
KeymasterI am of the vintage that listens predominantly to the music you are playing. I do listen to SOME “modern” music, but much more ove the pre-Y2K period. These were times before a lot of compression and other processing, so you really don’t want anything too heavy.
My marketplace is not in a situation where I have to out-shout other stations much, so I can concentrate on good, clean, open sound without having to crash through other louder sources.
Personally, I like to start with the “Refernce Settings” preset and tweak the minor settings through the “enhance” option. This will level all the quieter 60s, 70s tracks with the louder 80s to noughties, without any over-driving.
If you want something a little more aggressive, try French Kiss or Quintessence.Milky
Keymaster“Worth getting” is in the ear of the beholder (and their needs). I use BAE for my day-to-day laptop requirements to level YouTube and other clips from the internet, but I use BA1 HD for my main Music Room.
I need to qualify that by saying that I own several radio stations and engineer for several others, so BA1 is my “go to” software for commercial use. -
This reply was modified 4 months, 1 week ago by
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