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Duet Display

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Marion Loyd

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Dec 31, 2023, 2:49:17 AM12/31/23
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Apple's latest operating systems, Catalina on the Mac and iPadOS on the tablet, now offer built-in secondary display functionality with Sidecar, but that only works with very recent hardware models. In fact, Sidecar won't work with any iPad released before 2019. Duet Display can work with iPads dating from as far back as 2012. This makes a good case for using Duet Display in a reclamation project for an old tablet you no longer use regularly. It also works cross-platform, so you can use a Windows PC or a Mac as the host and Apple or Android mobile devices as the secondary display. And you can even turn a Chromebook into a secondary display, since Chrome OS can run Android apps.



duet display

Download https://t.co/kqnLSHdbar






Once you connect it via the USB cable, the mobile continues to behave normally, with all sync and recharging functions active. You even see mobile notifications while using the app. When you open the Duet Display app, the computer takes control. It briefly says "Adjusting Resolution" and then you see an extended desktop on the mobile display. You can use Windows' Settings to choose whether you want the Taskbar on the second display, which isn't useful for small displays like those on smartphones. The mobile's screen can do all the typical multi-monitor functions, including extending or mirroring the desktop.


We used a Surface Book and several Apple and Android mobile devices to extend the desktop's interface (not at the same time: Duet only supports adding one mobile screen). Dragging a window from the computer's display to the iPad's screen works just as it would with any external monitor. That said, if you have eagle eyes, you may notice a slight lag when dragging windows around on the mobile's screen. You can minimize this delay by fiddling with the Duet Display's settings on the desktop. Setting the app's screen refresh rate from 30 frames per second (fps) to 60fps smooths out the animation and sharpens details, but it causes your laptop to work harder to maintain the higher resolution and drawing rates.


Using the iPad Air screen for social media and messaging functions is a snap. Playing 1080p HD videos using Duet Display was a smooth and stutter-free experience in our tests. Tweetdeck displayed multiple columns without a hitch, and Slack and WhatsApp windows looked fine. Using Duet for email, messaging, and social feeds while you do your main work on your main monitor makes a lot of sense.


I got an app called duet display and I've been using Photoshop with my Ipad Pro and my Apple pencil, however this morning as I'm trying to draw in a new document it's not showing. The pencil is paired, by using the pencil I can select and deselect everything, but it just won't draw. I have been looking for a solution for this issue and haven't been successful. Please help, it's for an assignment for school. TIA






I can't remember if I've recommended Duet Display here before or not, but it's a great app to turn an iOS device into a second screen--extended or mirrored. As you can see in the attached photo, I've got Accordance 12/Mac in the extended display on my iPad Pro. I'm used to using a dual-screen setup at my desk, but this works quite nicely when I'm at a Starbucks where I am right now, working on a Bible study for church.


Duet Display actually works with Windows or Mac computers. In addition to the iOS app (linked above), you also download a program to your computer that needs to be running at the same time that the Duet Display app is running on your iOS device. When using an extended display like I am in the photo below, I can drag windows or other objects between the two screens. The trackpad (or a mouse) works on the extended display just as if it were simply a monitor that the Mac was plugged into. In fact, that's what this app does--it makes an iPad into a second monitor. Of course, any iOS notification will still display on top of the Duet screen, but it doesn't affect anything I'm doing unless I forget and touch the notification. If I do that, the iPad will switch to whatever app sent the notification.


The screen clarity is quite good, too. It's not exactly as sharp as my MBP screen, but it's better than the screen of a MacBook Air. There are multiple resolutions and framerates that can experimented with, and Duet Display will even use the discrete graphics chip in my MacBook Pro to power the display on the iPad Pro.


Duet Display has been around a little over two years. The software enables one to use an iPad or iPhone as a display when connected to a Mac or PC. At first blush, this seems like an expensive way to add a display to a music server, when one can be purchased for a few hundred dollars almost anywhere. However, I had other thoughts. The iPad is versatile and much more aesthetically appealing than any computer display near this price. It's also small and can be run off power straight from the music server (for better or worse).


I originally thought about using an iPad as a display by placing it on my equipment "rack" between the loudspeakers. This display would harken back to the days of placing the large LP cover where it was visible, while playing music. I could connect this iPad to any of my PC or Mac music servers, and place the servers out of visible range. Keep in mind that a wired Lightning connection is required from the computer to the iOS device.


Ideally, I would setup the music server to display the playback application on the iPad. Some applications feature really nice Now Playing screens, while others don't offer much that's appealing from 10 feet away. I tried Roon running on the iPad Air 2 display, but the visual is pretty underwhelming. Roon offers some information and a small image of the album cover. Certainly nothing I can't see with a glance over to my iPad while it's sitting next to me in my listening chair.


I tried the old standard iTunes, as well as Audirvana, and Amarra, but none of them really did it for me. I couldn't find a "Now Playing" type of screen that would give me the information I wanted on a display that would be 10 feet away, in between my loudspeakers. Just like the old album jackets.


The only app that really has anything going for it, with respect to an iOS display, is JRiver Media Center. I installed Duet Display from the app store on my iPad Air 2, and on my MacBook Pro running macOS Sierra / Windows 10 (Boot Camp). This way I could test both Windows and Mac on the same hardware and hardware that I would actually use as a music server.


The simplest view is Display View. This is very similar to the old school LP. It just displays the album cover at full screen. With the iPad placed between my speakers, it presents a nice visual, that also doubles as a touchscreen display if I want to get out of my chair to make an adjustment for some reason or another.


An even better use of Duet Display, JRiver Media Center, and the iPad is when JRMC is placed in Theater View. After getting help from JRiver's Jim Hillegass on setting Theater View to 60% in the JRMC options, the display was perfect size, even though the iPad is only 1024x768. There are several views within Theater View that can be used in this instance. The Now Playing screen and the Info screen are my two favorites. The Now Playing screen is for those with a bit more ADHD than I. It continuously rolls through images of the artist and the album cover of the currently playing track. Beneath the images, it displays the artist, track name, and total time of the tracks. This text is very small. Don't expect to see it from 10 feet away when it's displayed on an iPad. It wasn't designed for this scenario.


My preferred way to view JRMC on the iPad is the Info panel in Theater View. This very panel is customizable. I set it to display information such as artist, album, track #, track, time remaining, dynamic range, file format, bit depth, sample rate, and bitrate. Again, the text is small because I set the screen to 60%. Adjusting this setting increases the text size. Users will have to play with this setting because the text can be displayed larger at the sacrifice of cutting off some data at the bottom of the screen. If you're not displaying too much info, like I am, then setting it to 100% will be totally fine and the text will be large enough to read at 10 feet. In addition to the information and album art, the Info Panel displays artist images in the background. It's a nice visual.


How is this different from just running JRemote or Gizmo on an iPad? I kept asking myself this question because there are some similarities and some feature overlap. For some people the Duet Display solution doesn't make any sense, but for others it just might be what they need. The thing about the Duet Display, iPad, and JRiver Media Center combination is that it's a full functional display with touch capability that can operate the compute to which it's connected. Also, the remote apps running on iOS were designed to be displayed to your eyes from an arm's length. Placing them 10 feet away isn't that desirable.


There's one caveat to consider when using with a Mac Mini music server. Without a main display connected, you may need an HDMI display emulator. I was unable to test this or the need for it, I just know in some situations this emulator is needed. Here is a little discussion in the forum (link).




After using Duet Display for a few days, I realized it's calling may be for music lovers short of desktop space or at a coffee shop. I started using the app to display my music playback application of choice. Be that JRiver Media Center, Roon, Audirvana, Amarra, Tidal, iTunes, or Spotify. Connecting my iPad Air 2 to my iMac and attaching my iPad directly to my MacBook Pro with a Mountie by Ten One Design, gave me extra real estate that I could repurpose any time I needed. It's not a dedicated monitor, but it acts like one when I need it to and I can take it over to my listening chair to be a fully functional remote control whenever I want.


The ability to drag windows, ad use my mouse, from my main screen to this iPad second display was incredibly handy. Sure, I could have just launched the Tidal app on my iPad, but it's so much better to search using my full keyboard and mouse. In addition, the ability to attach any USB DAC I want to my laptop or iMac is much better than finding a DAC to work with the iPad. Duet Display as an extension of one's desktop / laptop is really where this app shines.

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