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Jim Roseberry

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Posts posted by Jim Roseberry

  1. 30 minutes ago, Bapu said:

    @Jim Roseberry

    Please define the range of large buffer sizes. 1024? 2048? 4096? larger?

    Is smallest 512 and lower?

    The lower the latency (smaller the buffer size), the greater the advantage of the 10900k's significantly higher clock-speed.

    The higher the buffer size (higher the latency), the greater the advantage of the 3970x's many additional cores.


    I don't consider 512-sample buffer size to be small.

    I wouldn't work at anything higher than 256-samples.

    Most times, I'm working at 32/64/128-sample ASIO buffer size.


    Insert a single instance of Helix Native... running with Presonus Quantum set to 96k using a 32-sample ASIO buffer size.

    That's running at 1ms total round-trip latency.  An extreme example...

    • AMD 3950x and 3970x - audio will glitch
    • Intel 10900k - no audio glitches

    If I'm paying $2000 for a CPU, I want it to excel at ultra low latency performance.

    10900k is about 1/3 the cost of the 3970x... and offers a great balance of features:

    • 5.3GHz all-core clock-speed
    • Runs quiet with large/quality air-cooking
    • 10 cores/20 processing threads
    • TDP = 125w

    There's no such thing as a quiet 3970x machine (TDP = 280w)... unless you allow it to thermal-throttle (which negates the purpose)

    • Like 1

  2. Your audio interface will determine the lowest latency you can achieve.

    Of course, the machine has to be able to keep up with the load (or you'll hear glitches or experience drop-outs).


    Are you using the TD25 as your audio interface... or are you using the Laptop's onboard audio?

    The TD25 (if it's like the large TD50) functions as a USB audio interface.

    Between the Laptop's onboard audio and TD25, the TD25 has a proper ASIO driver (which will out-perform ASIO-4-ALL).

    If you're after super low round-trip latency, you won't be happy using either the TD25 or Laptop's onboard audio as your audio interface.

    If getting a dedicated audio interface (that offers low round-trip latency) isn't an option, use the TD25.


    If you're dealing with an audio interface that doesn't offer 5ms round-trip latency or lower, forget triggering samples from EZ Drummer in realtime (there will be too much lag).  

    In this scenario, I'd record the MIDI performance from the TD25 (monitoring its internal sounds while tracking against the click-track).

    Once the TD25 MIDI performance is recorded, you can then route the MIDI track to an instance of EZ Drummer.

    You'll miss being able to play the EZ Drummer sounds in realtime... but it's the most effective work-around (to avoid latency).


    If you had a Thunderbolt audio interface like the Presonus Quantum... paired with a fast machine, you could trigger EZ Drummer in realtime... with no perceptible lag/latency.  

    Quantum can run at 96k using a 32-sample ASIO buffer size (resulting in total round-trip latency of 1ms).  

    At these settings, the machine has 1/3 of a millisecond to process the next buffer and get it in cue for playback.

    If anything interrupts this process, you'll hear glitches.

    This can be done, but (needless to say)... it's extremely demanding.


  3. 16 minutes ago, Starise said:

    There has been talk of a 10 core + eventual ARM processor. That doesn't sound like small device territory any more. 

    How does adding more cores affect latency and potential clock-speed?

    Generally speaking:

    • To make effective use of significantly more cores, you're talking higher buffer sizes.
    • The more cores on the CPU, the harder it is to achieve high clock-speed
    • Super tight enclosures mean low clock-speed (thermal limitations)
    • Long Battery Life means low clock-speed 


    AMD has 32 cores on 3970x Threadripper, but the all-core clock-speed is about 4GHz.

    Intel 10900k has 10 cores, with all-core clock-speed of 5.3GHz.

    • At large buffer sizes, the 3970x will smoke the 10900k
    • At smallest buffer sizes, the 10900k will smoke the 3970x


    In my experience, Mac laptops currently provide longer battery-life than most PC laptops.

    When using a laptop, I'm almost always plugged-in.  🤷‍♂️


  4. Just a couple of points:


    "Long Battery Life" and "High Performance" are diametrically opposed.  You can have one or the other... not both.


    General-purpose use (Office Apps, Surfing the Internet, etc) doesn't require much in the way of CPU.

    ARM CPUs are already fine doing these tasks (iPads).


    We work with a lot of Mac users who were essentially abandoned (as power-users) by Apple.

    Most often they're professional composers... who need specific components in a high-performance machine; a machine that can be expanded/upgraded as need demands.

    The new Mac Pro???  7k for the base model.  Specs our composer clients need would be ~$10,000... and still not offer the same speed/performance and custom/expansion/upgrade options.


    • Like 1

  5. 55 minutes ago, fdadf DFaf said:

    Hi Jim,


    Yes I've just done that and no MIDI seems to record despite the kit showing up in Cakewalk and being selectable etc.


    The Alesis module isn't a complicated one, and I don't see any setting to enable MIDI. The Alesis website also describes it as plug-and-play with no drivers needed for USB MIDI.


    I'm at a loss...?



    If no MIDI data is recorded, none is arriving at the "Alesis Nitro" USB interface.


    Just read the User's Guide.

    You have to set Local Control to OFF.

    If it's set to ON, the pads will trigger the onboard sounds (but not send MIDI data).

    If it's set to off, the pads will send MIDI data.

    If you want to hear the Nitro sounds (while recording MIDI), make sure the MIDI track's Input Echo button is enabled.

  6. First, I'd make sure MIDI data is getting from the drum brain to Cakewalk.

    • Open a new empty test project
    • Add a MIDI track
    • Set the MIDI track's input to Alesis Nitro>MIDI Omni
    • Record-arm the MIDI track
    • Record a few seconds of playing the Alesis Nitro

    If no MIDI data was recorded, that means MIDI data is not flowing out of the Alesis Nitro brain into Cakewalk.

    Check the Alesis Nitro to make sure it's set to transmit MIDI data via USB.

    • Like 1

  7. What audio interface are you using?

    You can monitor your guitar in one of two different ways.

    • Via the audio interface's onboard hardware based monitoring (near zero latency)
    • Via software (subject to the audio interface's round-trip latency)

    If you monitor via the audio interface's onboard hardware, that's controlled by the audio interface's control-panel applet... or on the unit itself.

    If you monitor via software in Cakewalk, you'll want to make sure the Input-Echo button is enabled.

    When the track is record-armed, do you see meter activity on the track?



  8. As was suggested, I'd install Cakewalk by BandLab... and see if the issue persists.

    Installing CbB won't have any effect on your existing Sonar X3 install (completely separate).


    If the issue persists, I'd check the machine's DPC Latency... using Latency Mon.

    High DPC Latency will cause symptoms similar to what you describe.  

  9. 1 minute ago, greg54 said:

    Thanks, Jim.   I have a Solid State Logic SSL2.    The meters don't show left or right. 

    If the keyboard is connected to channels 1 and 2... and signal is getting from the keyboard to the SSL-2,  you should be seeing those input meters firing.


    As a test, connect an instrument cable to the SSL-2... and touch the tip of the 1/4" (unconnected) other end.  You should see activity on the input meter.

    Try this in both Channel 1 and Channel 2.  You may need to raise the gain knob a little... but it should spike when touching the unconnected 1/4" tip.

    If you have a Mic, test each channel in the same manner (connected via XLR).  

    If you can't see input signal at all (even with gain increased), I suspect the SSL-2 is defective.


    On your keyboard, make sure MIDI Local is enabled.  Otherwise, you'll hear no sound when playing the keys.

    If it's off, you'll need to setup a MIDI track in Cakewalk, and make sure Input Echo is enabled on that MIDI track.

    MIDI Local control is a means of (electronically) separating the MIDI keyboard from the tone-generator (to avoid double-triggered MIDI notes when sequencing).

  10. Recording the Left and Right outputs from a synth/etc to separate tracks allows a bit more control (without using additional plugins like Channel-Tools).

    • You can pan hard left/right... or collapse the stereo image
    • You can have separate processing on the left and right channels
    • You can control the level of the left and right channels (independently)

    There's no right/wrong... just a matter of which is more convenient.

  11. 12 hours ago, Colin Nicholls said:

    I would also need a good PCIe thunderbolt card.

    Quantum is a great choice... as long as you understand the one weak point (there's no onboard DSP for routing/mixing/loopback-recording).

    ALL monitoring has to be done via software.

    IOW, If you have an Axe-FX or Helix (guitar processor)... or a keyboard... and just want to sit/play (monitoring thru the Quantum), you'll have to fire up your DAW and use it to setup the desired monitoring (Levels/Routing/etc).


    Note:  You can't add a PCIe Thunderbolt controller to just any motherboard.

    • Motherboard has to specifically support a Thunderbolt-3 controller
    • Motherboard must have a Thunderbolt-3 header that matches the type used by the Thunderbolt-3 add-in-card

    The Thunderbolt-3 add-in-card resides in a full-length PCIe slot... AND has to be connected to this Thunderbolt-3 header on the motherboard.

    Thunderbolt-3 works great on a Win10 PC. 

    Just make sure you've covered all the details.

    • Thanks 1

  12. Just a couple of comments:

    Video capture software puts substantial load on a machine.

    Working with HD/4k Video is much heavier load than a typical audio project.

    Running both a DAW project and video capture simultaneously will push some machines to their limit.

    Increasing the ASIO buffer size allows your machine to better mitigate high CPU load.


    Using an extreme example:

    • Audio interface set to 64-sample ASIO buffer size
    • Sample-rate 44.1k

    When running DAW software, your machine has 1.5ms to process the next audio buffer and get it cued for playback.

    If anything interrupts this process, you'll hear a glitch or (worse) experience a drop-out.

    The lower the latency, the less efficient the load can be spread across multiple cores.

    Thus, when working at lowest latency settings, CPU clock-speed is the single most important factor.

    • Like 2
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  13. Can't go wrong with K240s.

    I've used them for decades... but tend to use them for another listening perspective (not to actually mix).


    When mixing, make sure to vary the volume at which you monitor.

    ie:  Turn the level significantly down.  Can you still hear all instruments.

    Over time, our ears become less sensitive... so there's a tendency to keep increasing the monitor level (same as playing live gigs with amps).

    You can help save your ears (and mix) by turning the level down... and making sure the drums/bass/etc don't disappear.

  14. On 8/26/2020 at 2:56 PM, micv said:

    Would be great if the track's FX bin can be configured to be "post send" so the raw track can have its FX also.

    If you have a Send set to 0dB (no gain change), what arrives at the Return (Stereo Bus) is a "mult" or copy.

    You've got processing on the original track (which happens before the Send).

    There's no way to make the original track's EFX Inserts "post send"... as the (Send) signal has left that channel.

    On the Return (Stereo Bus), you've got EFX Inserts... and you can Send to another Return (Stereo Bus).


    Let's say you've got a dry DI electric bass track... but want it to sound a bit more like Chris Squire or Geddy Lee.

    You could create a Send on the DI electric-bass track... to a Return (Stereo Bus) called "Dirt".

    On the "Dirt" return, use the EFX insert to add your favorite distortion plugin.

    Adjust the level of the "Dirt" Return... to mix in the desired amount of distortion (added to the original  DI bass).

    Upon listening to the distortion, it's affecting the bottom-end too much (we want to limit the distortion to effecting only the mids/top end).

    In the "Dirt" Return's EFX insert, add your favorite EQ before the distortion plugin... and use a high-pass filter to roll off everything below 1k.

    Now, the distortion is adding character... without losing clarity on the bottom-end.

    On the Bridge of the song, the bass is playing a melodic part... so we want to add some Chorus (just to the distorted mult).

    Create a Send from the "Dirt" Return... to a new "Chorus" Return.  Insert your favorite Chorus plugin in the EFX insert of the "Chorus" Return.

    Adjust the level of the "Chorus" Return to balance with the original bass track.


    This is what we've created:

    • Original DI electric bass track
    • Mult (copy) that's 100% distorted
    • Chorus that's applied only to the distorted Mult


    You may know all this...

    I just wanted to use an example to explain what's possible. 

    I'd be surprised if you couldn't accomplish what you're looking for... in a multitude of ways.

    Worst possible scenario, you can create multiple physical copies of the original track (I doubt this is necessary).

  15. 16 hours ago, kzmaier said:

    Behringer U-Phoria UMC1820 - Good price and reviews!  Are drivers up to date for Windows?

    PreSonus Studio 1810c - Like the input meters!  Would be happy with 1810 but cannot find one.

    Focusrite Scarlett 18i8 3rd Gen - Had good luck with 6i6!

    The U-Phoria and Scarlett will have about the same round-trip latency ~6ms (when set to minimum buffer size at 44.1k).

    Presonus Studio 1810c round-trip latency will be a couple milliseconds higher.


    Fidelity wise, it's a wash.

    Driver wise, it's a wash.  None have the pedigree of RME.


    Out of those choices, I'd go with the Behringer U-Phoria.

    If you've used any of the X-series digital consoles playing live, you've used some of the same technology (mic preamps, etc).

  16. 2 hours ago, Bapu said:

    My lovely lady did purchase a few of my basses (and one guitar) for me as gifts. I just keep most of the  others hidden.

    I have a good friend that wanted to have guitars shipped to my address.

    I let him do that a couple of times... then put an end to it.

    I told him his wife is intelligent enough to know that his guitars don't reproduce.

    She's an accountant... and probably already had a spread-sheet with all accounted.   😄

    • Haha 2
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