audio interface

What's on my desk?

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Earlier this year, I wrote a guest post for the Club MacStories newsletter showing off all the technology on my desk. With permission from the editors, I am cross-posting that below.

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This desk is in my home music studio in Maryland. I run a private percussion teaching studio out of this space and produce my blog/podcast Music Ed Tech Talk.

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My 14" MacBook Pro is the core of my computing life. It goes with me everywhere, from this desk to my day job as a middle school band director. I teach out of four different classrooms. USB-C hubs at all of my desks allow me to have distinctive hardware setups specific to each room while maintaining continuity through the consistency of my macOS settings and apps.

My secondary monitor is an LG Ultra Wide. I don't love it. I originally got it as a cheap way to interact with my Mac mini (dominantly used to serve up Plex content and run a Homebridge server.) I have phased out the Mac mini and hope to one day replace this monitor with something nicer now that it is used with the MacBook.

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When my school district moved to virtual learning last year, I wanted to upgrade my webcam. The Logitech C920 was one of the most popular options I was coming across, and it hasn't let me down yet. I have a snake arm from Amazon (link) that allows me to easily adjust the angle of the camera and the ring light behind it. The arm can bend the camera down to face the surface of my desk and show what my hands are doing during virtual classes, presentations, and live streams.

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These M-Audio BX5a monitors were on sale ten years ago, presumably because red is a less popular color than black. I actually kind of like having an accent color. They sound balanced enough to reference the diverse musical projects I edit. They produce enough output for my students to jam along to recordings on drum set.

Because the studio monitors are my primary sound output, the HomePod mini is used mainly for controlling Siri. I often ask it to turn on the baseboard heaters (with the Mysa HomeKit thermostat), the lights, and a red light outside the door to let my family know if I'm recording.

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The Focusrite Scarlet 6i6 is my current audio interface. It has just enough ins and outs to plug my MIDI and audio input devices into my computer while outputting sound to the studio monitors. I don't currently do any fancy recording down here beyond my podcast and student audition tapes (which only require stereo recording).

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The AKG P420 is my favorite mic for generalized recording in its price range. It's a resonant and balanced condenser microphone. I honestly think it compares to some microphones up to double the price. I use it primarily for virtual class, presentations, podcasting, and in a pair to record student audition tapes in stereo.

My Audio Technica headphones are pretty old and junky (I couldn't even find a link to this model online), but their long life speaks to the quality of AT's gear. I sometimes plug my AirPods Max into the Scarlet if I am already wearing them.

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My Lamy Safari Fountain Pen and Rhodia notebook are my entry point into the world of better-than-average writing tools, and I am open to learning more!

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I love the feel and simplicity of Apple's Magic Keyboard, Trackpad, and Mouse. It took some time to learn to use the trackpad on the left. Still, it gives me a powerful workflow where I can quickly make refined edits in audio software by zooming in and out of the project with my left hand while precisely manipulating content with the mouse.

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I love my 12.9" iPad Pro! Sometimes I use it as a laptop at home and work. In my studio, I usually rip off the tablet and read full-sized sheet music on it using the forScore app. I also depend on the Tonal Energy Tuner, which is the most powerful app of its kind on the App Store and does not currently have a Mac version.

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My Ableton Push 2 works primarily as a control surface for Ableton Live. It is a new addition, and I am overwhelmed by its potential. Ableton Live is a very advanced application, and the Push allows you to control almost all of its features with tactile, performable knobs and buttons. It makes the software feel like an instrument. You can use it to record note input, manage the tempo, trigger loops, edit samples, and more!

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I play with music production for fun, but I also use the Push as a supercharged metronome when teaching private students. It allows me to get my eyes off the computer screen and focus more on the teaching because all the buttons can manipulate the app even when it isn't in the foreground.

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I use a Stream Deck for all the same reasons MacStories readers might find it useful- live streaming, Shortcuts, and other automation. I also use it to navigate the deep menus and feature sets of Dorico, a music notation application.

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Notation Central has pre-built Stream Deck profiles for major music notation apps available on their website (link).

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The MicroKorg is a fun little synth that can be highly programmed to produce absolutely otherworldly audio. I also use it for MIDI note entry in digital audio workstations and music notation apps.

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My electronic reference piano is a Korg Concert C-150, which I also use for MIDI note input. It's an electric upright piano from the 80s with the legs chopped off. A high school was going to throw it away in the early 2000s before I asked if I could have it instead. I like it because it has a flat surface for putting stuff on (like other keyboards).

On top of the Korg is a Roland Octopad SPD-30. This is a great electronic drum sampler. It has an excellent library of its sounds and can trigger note input in music software using my most comfortable input method (drum sticks).

Next to the Octopad is my Yamaha Harmony Director. It's a keyboard that plays sustained tuning drones and can easily switch between different tuning systems. The drones can be played through speakers, or in my case, be used to create play-along practice material for students (link).

Apple TV. I wish I could say I use this for something other than playing Sonic the Hedgehog while my kid naps.

Instruments! The desk is a fun command station, but it's really only the hub of my digital productivity and creativity. The real bread and butter of my professional life are the instruments I play and teach. Depicted here are my vibraphone, marimba, timpani, drum sets, snare drum, wind instruments, and other fun!

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The Music Ed Tech Talk Holiday Gift Guide, featuring Dr. David MacDonald

David MacDonald joins Robby to share their favorite books, hardware, apps, services, and musical gift ideas.

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My Online Teaching Setup (High-Tech Edition)

My studio computer and associated hardware.

My studio computer and associated hardware.

When school let out in March, I wrote My Very Straightforward and Very Successful Setup for Teaching Virtual Private Lessons. The impetus for this post, and its snarky title, was an overwhelming number of teachers I saw on Facebook fussing about what apps and hardware they should use to teach online when all you really need is a smartphone, FaceTime, and maybe a tripod.

I stand by that post. But there are also reasons to go high-tech. I have had a lot of time this summer to reflect on the coming fall teaching semester. I have been experimenting with software and hardware solutions that are going to make my classes way more engaging.

Zoom

I have been hesitant about Zoom. I still have reservations about their software. Yet, it is hard to resist how customizable their desktop version is. I will be using Google Meet for my public school classes in September, but for my private lessons, I have been taking advantage of Zoom’s detailed features and settings.

For example, it’s easier to manage audio ins and outs. Right from the chat window, I can change if my voice input is going through my Mac's internal microphone or my studio microphone, or if video is coming from my laptop webcam or my external Logitech webcam. This will also be useful for routing audio from apps into the call (we will get to that in a moment).

Zoom allows you to choose the audio/video input from right within the call.

Zoom allows you to choose the audio/video input from right within the call.

Zoom also allows you to AirPlay the screen of an iOS device to the student as a screen sharing option. This is the main reason I have been experimenting with Zoom. Providing musical feedback is challenging over an internet-connected video call. Speaking slowly helps to convey thoughts accurately, but it helps a lot more when I say “start at measure 32” and the student sees me circle the spot I want them to start in the music, right on their phone.

You can get really detailed by zooming in and out of scores and annotating as little as a single note. If you are wondering, I am doing all of this on a 12.9 inch iPad Pro with Apple Pencil, using the forScore app. A tight feedback loop of “student performance—>teacher feedback—>student adjustment” is so important to good teaching, and a lot of it is lost during online lessons. It helps to get some of it back through the clarity and engagement of annotated sheet music.

Selecting AirPlay as a screen sharing option.

Selecting AirPlay as a screen sharing option.

AirPlaying annotated sheet music to the Zoom call using the iPad Pro and forScore app.

AirPlaying annotated sheet music to the Zoom call using the iPad Pro and forScore app.

As much as I love this, I still think Zoom is pretty student hostile, particularly with the audio settings. Computers already try to normalize audio by taking extreme louds and compressing them. Given that my private lessons are on percussion instruments, this is very bad. Zoom is the worst at it of all the video apps I have used. To make it better, you have to turn on an option in the audio settings called “Use Original Audio” so that the host hears the student’s raw sound, not Zoom’s attempt to even it out. Some of my students report that they have to re-choose this option in the “Meeting Settings” of each new Zoom call.

If this experiment turns out to be worth it for the sheet music streaming, I will deal with it. But this is one of the reasons why I have been using simple apps like FaceTime up until this point.

My Zoom audio settings.

My Zoom audio settings.

My Zoom advanced audio settings.

My Zoom advanced audio settings.

Sending App Audio Directly to the Call

I have been experimenting with a few apps by Rogue Amoeba that give me more control over how audio is flowing throughout my hardware and software.

Last Spring, I would often play my public school students YouTube videos, concert band recordings from Apple Music, and warm-up play-alongs that were embedded in Keynote slides. I was achieving this by having the sound of these sources come out of my computer speakers and right back into the microphone of my laptop. It actually works. But not for everyone. And not well.

Loopback is an app by Rogue Amoeba that allows you to combine the audio input and output of your various microphones, speakers, and apps, into new single audio devices that can be recognized by the system. I wrote about it here. My current set up includes a new audio device I created with Loopback which combines my audio interface and a bunch of frequently used audio apps into one. The resulting device is called Interface+Apps. If I select it as the input in my computer’s sound settings, then my students hear those apps and any microphone plugged into my audio interface directly. The audio quality of my apps is therefore more pure and direct, and there is no risk of getting an echo or feedback effect from my microphone picking up my computer speaker’s sound.

A Loopback device I created which combines the audio output of many apps with my audio interface into a new, compound device called “Interface+Apps.”

A Loopback device I created which combines the audio output of many apps with my audio interface into a new, compound device called “Interface+Apps.”

I can select this compound device from my Mac’s Sound settings.

I can select this compound device from my Mac’s Sound settings.

Now I can do the following with a much higher level of quality...

  • Run a play-along band track and have a private student drum along
  • Play examples of professional bands for my band class on YouTube
  • Run Keynote slides that contain beats, tuning drones, and other play-along/reference tracks
  • and...

Logic Pro X

Logic Pro X is one of my apps routing through to the call via Loopback. I have a MIDI keyboard plugged into my audio interface and a Roland Octopad electronic drum pad that is plugged in as an audio source (though it can be used as a MIDI source too).

The sounds on the Roland Octopad are pretty authentic. I have hi-hat and bass drum foot pedal triggers so I can play it naturally. So in Logic, I start with an audio track that is monitoring the Octopad, and a software instrument track that is set to a piano (or marimba or xylophone, whatever is relevant). This way, I can model drum set or mallet parts for students quickly without leaving my desk. The audio I produce in Logic is routed through Loopback directly into the call. My students say the drum set, in particular, sounds way better in some instances than the quality of real instruments over internet-connected calls. Isn’t that something...

Multiple Camera Angles

Obviously, there is a reason I have previously recommended a set up as simple as a smartphone and a tripod stand. Smartphones are very portable and convenient. And simple smartphone apps like FaceTime and Google Duo make a lot of good default choices about how to handle audio without the fiddly settings some of the more established “voice conference” platforms are known for.

Furthermore, I can’t pick up my desk and move it to my timpani or marimba if I need to model something. So I have begun experimenting with multiple camera angles. I bought a webcam back in March (it finally just shipped). I can use this as a secondary camera to my laptop’s camera (Command+Shift+N in Zoom to change cameras).

Alternatively, I can share my iPhone screen via AirPlay and turn on the camera app. Now I can get up from my desk and go wherever I need to. The student sees me wherever I go. This option is sometimes laggy.

Alternatively, I can log in to the call separately on the iPhone and Mac. This way, there are two instances of me, and if I need to, I can mute the studio desk microphone, and use the phone microphone so that students can hear me wherever I go. I like this option the best because it has the added benefit of showing me what meeting participants see in Zoom.

Logging in to the Zoom call on the Mac and iPhone gives me two different camera angles.

Logging in to the Zoom call on the Mac and iPhone gives me two different camera angles.

SoundSource

This process works well once it is set up. But it does take some fiddling around with audio ins and outs to get it right. SoundSource is another app by Rogue Amoeba that takes some of the fiddly-ness out of the equation. It replaces the sound options in your Mac’s menubar, offering your more control and more ease at the same time.

This app is seriously great.

This app is seriously great.

This app saved me from digging into the audio settings of my computer numerous times. In addition to putting audio device selection at a more surface level, it also lets you control the individual volume level of each app, apply audio effects to your apps, and more. One thing I do with it regularly is turn down the volume of just the Zoom app when my students play xylophone.

Rogue Amoeba's apps will cost you, but they are worth it for those who want more audio control on the Mac. Make sure you take advantage of their educator discount.

EDIT: My teaching set up now includes the use of OBS and an Elago Stream Deck. Read more here.

Conclusion

I went a little overboard here. If this is overwhelming to you, don't get the idea that you need to do it all. Anyone of these tweaks will advance your setup and teaching.

This post is not specific about the hardware I use. If you care about the brands and models of my gear, check out My Favorite Technology to read more about the specific audio equipment in my setup.

Routing Audio from Your Apps Directly Into Your Zoom Call (Or Other Voice Chat App) with Loopback

UPDATE: Learn more about Loopback from my interview with CEO Paul Kafasis on my podcast. Listen and subscribe below…

Loopback is an app that creates custom audio ins and outs for the Mac using the audio of other apps.

Loopback is an app that creates custom audio ins and outs for the Mac using the audio of other apps.

Have you been teaching a class in Google Meet or Zoom and wanted to play a song from iTunes for your digital classroom? Or perhaps a YouTube video or any other application with audio?

Sure, you can play it right on your computer and let the audio from your speakers go straight back into the microphone input of your computer. This works ok in my opinion. But it isn't going to produce a pure representation of the audio I am trying to send. And in some cases, it creates issues with echo, delay, or a nasty feedback loop.

So what do you do? Rogue Amoeba makes excellent Mac apps that, for lack of better explanation, hack into the audio system of your Mac. I have written about Audio Hijack here before, their app that allows you to record audio from other applications (and that's just the start of all the powerful things it can do). Rogue Amoeba also makes an excellent utility called Loopback.

What does Loopback do? Think about your computer's audio settings. You have an Input and an Output. The Input is, by default, your computer microphone, and the Output is the speakers. If you connect an audio interface that has higher quality microphone and speakers plugged in, you would need to set the Input and Output to that interface to get the input and out put the be the microphone and speakers, respectively.

Usually my computer microphone is a Device that can be set to the computer’s Input. In the scenario above, Loopback has allowed me to combine the audio from my microphone and the Music app into a new audio Device called “Music+Mic” that can be selec…

Usually my computer microphone is a Device that can be set to the computer’s Input. In the scenario above, Loopback has allowed me to combine the audio from my microphone and the Music app into a new audio Device called “Music+Mic” that can be selected as the input of my Mac or any individual app.

Your Inputs and Outputs can be controlled from the Sound settings of your computer. Some audio apps also let you control how, specifically, they behave. For example, I have manually set up GarageBand and Skype to use my audio interface as the Device I use for input so that whether I am recording for my podcast, or simply catching up with a relative, they hear me through the microphone, no matter what Device my Mac’s audio Output is set to in the System Preferences.

Loopback allows you to create Inputs and Outputs that are accessible to your Mac's Sound settings as well as your apps. In the example above, I have created an Input that combines my Mac's microphone (the usual Input) with the output of the Apple Music app, something I might want to use to play a recording example for my students in a Google Meet.

Selecting my new audio Device from the System Preferences.

Selecting my new audio Device from the System Preferences.

Look now as I go to my computer's Sound settings, and I can select this new custom Input to be used across the entire operating system! This way, when I am in a Google Meet, students are hearing both me speaking through the mic and all of the output of the Music app.

Now I can route my band warm up tracks, reference recordings, or any other audio I desire, into my Google Meet classrooms.

Now I can route my band warm up tracks, reference recordings, or any other audio I desire, into my Google Meet classrooms.