Logic Pro Tutorial

Logic Pro X Signal Flow Explained®

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35 Videos | Length: 3hr 41min 9sec
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Chapter 1 : Before Logic

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    From Source to Output

    An overview of the steps and stages audio and MIDI signals pass through that will be looked at throughout this series.

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    Sound Waves and Microphones

    Discover how vibrations in the air movement are measured and how microphones are used to convert these changes into corresponding electrical voltages.

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    Learn about XLR and TRS cables, and the differences between balanced and unbalanced signal flow.

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    Pre Amps

    Explore the functions and connections of the pre amplification stage of signal flow, which is used to boost signal level.

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    The Audio Interface

    This is the last stop in the signal flow's journey in the physical world. The audio interface converts it into the digital information the computer needs in order to work with it within Logic Pro X.

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    Audio MIDI Setup

    Use this OS level utility to ensure all the ins and outs on your audio interface are recognized properly by the Mac OS. Most audio interface's also ship with a software control panel to configure core audio OS level settings.

Chapter 2 : In Logic

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    Buffers and Latency

    Learn about input and output latency and how the buffer settings affect the delay when monitoring audio through Logic.

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    Audio Input

    Discover three ways of routing audio signal flow directly into Logic, via the Live Input object in the Environment Window, the Auxiliary channel strip's input field, or directly on an Audio Channel Strip.

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    Audio and Output Channel Strips

    Follow the signal flow from top to bottom, and from left to right throughout Logic's mixer.

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    Software Instrument Channel Strips

    Discover the similarities and the differences between the signal flow in audio channel strips and instrument channels strips.

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    Output Routing and the Master Fader

    Learn how to reassign the stereo output routing in Logic's preferences, how to use the Dim button on the Master fader, and how to toggle the output level between two values by key command.

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    Panning and Balance

    Explore the pan/balance knob, and see how the signal being played back reacts when placed at various positions in the stereo image on both mono and stereo tracks, and how the level of the signal is affected by Logic's various pan laws.

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    The Direction Mixer

    See how the Direction Mixer plug-in is used to control the width of a stereo signal, and to pan the center of the stereo image rather than merely adjusting the relative levels like the channel strip's balance knob does.

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    Sends and Busses

    Discover how busses are used as virtual pipelines to route portions of a channel strip's signal to alternate destinations for effects processing, how sends and Auxiliary channel strips are used to send and receive bus signals, and how Logic's Bus objects, an artifact of the distant past, were once used.

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    Pre and Post Fader Sends

    Discover some of the unique signal flow routing possibilities available when assigning sends in post fader, pre fader, and post pan modes.

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    Auxiliary Channel Strips

    See how auxiliary channel strips are used as subgroups, multi output instrument routing, and in track stacks.

Chapter 3 : Recording

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    Setting the Record Delay

    Watch as the distance between a percussive signal re-recorded through the audio interface is measured with the original, in order to determine the necessary recording delay offset.

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    Record Delay Another Way

    See how to bounce the re-recorded signal with the original into a stereo file, and then measure the offset between the two sides in the Audio File Editor.

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    Monitoring the Signal

    Learn about the various software monitoring settings and functions that allow signal to be monitored through Logic.

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    Recording with Effects

    Explore four different ways of recording with software effects processing inserted at various access points in the signal flow.

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    Direct Monitoring

    Learn how direct monitoring bypasses recording latency by routing the inputs directly to the outputs of your audio interface, and how to combine this with the monitoring of software effects processing at the same time.

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    Explore the characteristics of input latency, output latency, monitoring latency, and internal latency; and how Logic's plug-in delay compensation and low latency mode features are best used.

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    Punch Recording

    See some of the ways signal flow is monitored and captured during quick punch and auto punch recording.

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    Creating a Headphone Mix

    Learn how to set up a parallel audio stream routed to the headphone outputs on a multi out audio interface.

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    IO Labels

    Learn how to customize the display names of your audio interface's physical inputs and outputs, as well as the virtual bus pathways within Logic.

Chapter 4 : MIDI Signal Flow

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    MIDI Signal Flow Basics

    See how MIDI input flows from the Audio MIDI Setup app, to Logic's Physical Input Environment Object, to the Sequencer Input, to the selected track in the Track's Area, to the connected Channel Strip, through the instantiated MIDI FX and software instrument. The generated audio triggered by the MIDI messages then flows through audio processing plug-ins, and bus sends; and finally to the outputs of Logic's internal audio stream.

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    Routing To External MIDI Devices

    Discover how to route incoming MIDI messages back through the output ports on your connected devices in order to trigger external sound sources.

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    Customizing Your MIDI Setup

    Learn how to use Audio MIDI Setup and Logic's Environment to create representations of your connected devices with the proper routing assignments set up in advance, so that they are always preconfigured and available.

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    External Instrument Plug-In

    See how this plug-in is used to both route MIDi to an external destination, and bring it's audio in via your audio interface. Alternatively, learn how to use Auxiliary and Input channel strips to route the audio from external devices into Logic's signal flow.

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    The Environment

    Learn how to cable Environment objects into the MIDI signal pathway so that their generated events occur either after or before MIDI input reaches Logic's sequencer.

Chapter 5 : Advanced Signal Flow

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    IAC Signal Flow

    Learn how the IAC bus is used to route MIDI signal flow to stand alone software instruments outside of Logic.

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    See how audio is routed between applications using this free third party software, and learn how to create an Aggregate Device in the Audio MIDI Setup utility as a means of combining the signal flow from multiple audio streams into a single virtual core audio device.

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    Multi Track Recording

    Explore some of the different ways to approach recording multiple audio and MIDI streams separately and together.

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    Merging the Internal Signal Flow

    Explore a few different scenarios, other than the traditional bounce to disc function, that allow for the merging of multiple audio streams within Logic.

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    Sidechain Processing

    Explore some scenarios where the signal flow of one channel strip is routed to the input of a plug-in on another channel strip, functioning as a control source that acts upon the sound of the destination track. And discover some creative uses for Environment Bus objects.

Product Overview

If you're new to Logic Pro X, or just want to better understand the art of routing and signal flow, this is the series to watch. Logic Superman Eli Krantzberg breaks down everything you need to know about both basic and advanced routing and signal flow in Logic Pro X, making your workflow more efficient and inspired.

Eli starts with the important foundations such as what audio and MIDI are, how Sound Waves and Microphones work, Cable and Pre Amp overviews, and audio and MIDI interface basics and setup. Eli then opens Logic Pro X and starts your guided journey with tutorials on Buffers and Latency, Audio Input, Audio and Software Instrument Output Channel Strips, Panning and Balance, the Direction Mixer Plug-in, using Sends & Busses, Auxiliary Channel Strips and more!

Now Eli focuses on Recording and gives you tutorials on Setting Record Delay, Monitoring the Signal, Recording with Effects, Direct Monitoring, Punch Recording, creating Headphone Mixes and I/O Labels. MIDI Signal Flow in Logic Pro X is now examined, and Eli starts at the beginning with MIDI Signal Flow Basics, Routing to External MIDI Devices, Customizing your MIDI Setup, the External Instrument Plug-In, and routing inside the illusive Environment.

Advanced Signal Flow is now demonstrated, and Eli explains everything you need to know about the IAC Bus, using Soundflower, Multi-Track Recording, Merging Internal Signal Flow, Side-Chain Processing and much, much more. If you're looking for the ultimate guide to signal flow and routing in Logic Pro X, look no further... Get "Logic Pro X Signal Flow Explained" today!

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Logic Pro X Signal Flow Explained® is rated 4.9 out of 5 by 9 .
Rated 5.0 out of 5 by from Answered a couple questions I couldn't find anywhere else. I was just looking for some answers to signal routing. I'm not new to music. I play multiple instruments. But the engineering end of things has never been my strong suit. I had just about pulled out what is remaining of my hair in order to get my AI to communicate with Logic. I did all kinds of searching on Youtube to no avail. I gave this a shot and voila I got what I needed. Sorry to say it wasn't complicated. Even though there are answers likely out there to be found, to have it systematically listed and not feel like and idiot if you are still a bit novice in some small segments...this has been a great resource. I have a ton of other software programs I need explanation concerning and look forward to what else exists here. The monthly all-access pass is a great option.
Date published: 2021-06-27
Rated 5.0 out of 5 by from Eli, Logic Pro X and coffee! Well, well define. Thanks Eli, always a pleasure.
Date published: 2021-04-12
Rated 4.5 out of 5 by from Brilliantly explained Loved this course, it taught me the basics of signal flow to help me understand the mixing process better
Date published: 2017-04-30
Rated 5.0 out of 5 by from Loving it so far. Exactly what I needed. This is much mor thorough than a "how to" on Logic software. Great for seeing what Logic (or any other DAW ) does with sound. Wnderfully explained.
Date published: 2017-04-20
Rated 5.0 out of 5 by from Very helpful All of Eli's videos are excellent.
Date published: 2017-03-15
Rated 5.0 out of 5 by from thank you ! very straight forward/ easy to follow
Date published: 2017-03-10
Rated 5.0 out of 5 by from Fantastic Overview Extremely helpful to learn and understand how things work or supposed to work.
Date published: 2017-02-08
Rated 5.0 out of 5 by from Very good. This guy is a great teacher This guy is a great teacher. He really showed me some of the intricacies of Logic. This teacher wastes no time, he is very knowledgeable and prepared.
Date published: 2017-01-22
Rated 5.0 out of 5 by from Great Explanations and Insights I struggled with Logic for some time and this video training showed me all relevant settings and signal flow elements to finally understand what is going on. Highly recommended.
Date published: 2016-10-03
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