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# Audio Mixing Masterclass for Cinematic Composing

## Table of Contents
1. [Introduction and Fundamentals](#introduction-and-fundamentals)
   - [Introduction](#introduction)
   - [Objectives](#objectives)
   - [What is Mixing?](#what-is-mixing)
   - [The Basics of Sound](#the-basics-of-sound)
   - [Workflow and Work Environment](#workflow-and-work-environment)
   - [Recommended Equipment: Control Surfaces](#recommended-equipment-control-surfaces)
   - [Recommended Equipment: Monitor Stations](#recommended-equipment-monitor-stations)
   - [Recommended Equipment: Monitors and Headphones](#recommended-equipment-monitors-and-headphones)
   - [Recommended Equipment: Plugins](#recommended-equipment-plugins)
2. [Session Setup and Organization](#session-setup-and-organization)
   - [Importing Tracks](#importing-tracks)
   - [Track Management](#track-management)
   - [Color Coding](#color-coding)
   - [Groups](#groups)
   - [Sub Groups, Aux and VCAs](#sub-groups-aux-and-vcas)

---

## Introduction and Fundamentals

### Introduction

Welcome to the Audio Mixing Masterclass for Cinematic Composing. This course is designed to teach you the best techniques, methods, and tricks to achieve excellent results with your music, regardless of the software, computer, or operating system you're using.

Although the course is based on Avid Pro Tools HDX, all techniques can be easily applied to other software like Cubase, Logic, Digital Performer, FL Studio, or any other DAW. The instructor will be available to help translate techniques to your specific software if needed.

### Objectives

The objective of this course is to equip you with the knowledge to make effective mixing decisions. Just as a photographer uses light, lenses, and angles to achieve the best picture, a mixing engineer uses various tools to achieve the best mix.

Key learning points include:
- Seeing the full picture of your mix rather than just individual instruments
- Making informed decisions about your mix
- Using the tools in your DAW effectively
- Correcting common mixing problems
- Adapting to different listening environments
- Applying good judgment to achieve professional results

The most important factor in mixing is you—your common sense and judgment—which no DAW can provide on its own.

### What is Mixing?

**Technical Definition:** Mixing is the process of taking multiple sounds and combining them into one or more channels (stereo, 5.1, 7.1, etc.) for distribution. During this process, you manipulate volume, frequency content, dynamics, panorama, and enhance sounds using effects like reverb, chorus, delay, and echo.

**Beyond the Technical:** Mixing has evolved significantly over the years, not just due to technological advancements (from tape to hard disk to powerful DAWs), but also as an expression of culture, background, and personal taste. Different musical genres and eras have distinct mixing approaches:
- Rock mixes typically have louder guitars
- Classical music features more subtle percussion
- The 1980s were characterized by heavy reverb on vocals and drums

Mixing is both a technical skill and an art form. As a mixer, you may need to make decisions about which elements to keep or remove, balancing technical requirements with artistic choices.

### The Basics of Sound

Understanding the physics of sound is fundamental to mixing:

**What is Sound?**
- Sound is an oscillation of air
- Similar to waves in water, the air moves up and down but doesn't travel forward
- Each complete oscillation is called a cycle or hertz (Hz)

**Sound Wave Mathematics:**
- Air travels at 1,125 feet per second (343 meters per second)
- The lower the frequency, the longer the wavelength:
  - 2 Hz = 562 feet (171 meters)
  - 8 Hz = 140 feet (42 meters)
  - 16 Hz = 70 feet (21 meters) - approximate human hearing threshold
  - 32 Hz = 35 feet (10.7 meters)
  - 64 Hz = 17 feet (5 meters) - bass range
  - 128 Hz = 8 feet (2.4 meters)

**Implications for Mixing:**
- Speakers must reproduce all frequencies
- Low frequencies require more energy to reproduce
- Unnecessary low frequencies can make your mix sound muddy
- Cutting unnecessary low frequencies allows speakers to more efficiently reproduce the frequencies you want to hear

**Speaker Placement:**
- Speakers should form an equilateral triangle with your listening position
- Speakers should be at ear height when you're seated
- High frequencies have smaller wavelengths and can be blocked easily
- Low frequencies have longer wavelengths and can pass through walls

**Sound Propagation:**
- Sound travels in circular waves, not in straight lines like light
- You hear direct sound and reflections from surfaces (floor, ceiling, walls)
- Placing speakers at least 2-3 feet from walls prevents bass buildup

**Phase Issues:**
- Phase problems occur when the same sound arrives at different times
- Out-of-phase sounds can cause cancellation
- At 180 degrees out of phase, sounds can almost completely cancel each other
- We'll learn to identify and fix phase issues later in the course

### Workflow and Work Environment

Creating a comfortable, distraction-free environment is essential for effective mixing:

**Ergonomics:**
- Invest in a good chair with lower back support (e.g., Aeron chairs)
- You'll spend 8-12 hours a day in this chair, so prioritize comfort and health

**Workspace Organization:**
- Keep essential tools within arm's reach (remote controls, surface controllers)
- Place less frequently used items farther away to encourage taking breaks
- These breaks help rest your ears and improve blood circulation

**Listening Volume:**
- Ears adapt quickly to sound conditions (similar to how eyes adapt to darkness)
- After 2-3 minutes of loud music, you may not realize how loud it actually is
- Use a sound pressure monitor to ensure you're not exceeding 85 dB
- Change volume levels every 10-15 minutes to prevent your brain from adapting
- Lower volumes allow you to better hear balance issues
- Protect your hearing—ear damage is permanent

### Recommended Equipment: Control Surfaces

Control surfaces provide a more natural way to manipulate faders than using a mouse:

**Benefits of Physical Faders:**
- More natural control for volume adjustments
- 4 faders is typically sufficient, but even one improves workflow
- For very quick or subtle adjustments, drawing automation lines may still be better

**Key Considerations When Purchasing:**
1. **Connection Type:**
   - Ethernet: Faster, works over longer distances
   - USB/MIDI: May become sluggish over distances >7 feet, especially with busy sessions

2. **Protocol:**
   - Eucon Protocol (formerly Euphonix): Faster, deeper integration
   - Mackie Protocol: More universal compatibility

**Recommended Control Surfaces:**

*Eucon-Based:*
- Avid Artist Series: 4 faders, touchscreen, extensive functionality
- MC5: Allows splitting control between different applications

*Mackie Protocol-Based:*
- Mackie Control: Modular, up to 32 channels
- Faderport: Single fader with basic transport controls
- Steinberg CC-121: Designed for Cubase/Nuendo, includes EQ controls

*iPad Apps:*
- Avid Pro Tools Control: Free, works with any Eucon-compatible software
- V-Control/Pro Remote: Works with most DAWs
- Cubase IC: Works only with Cubase ($19)
- Logic Remote: Works only with Logic (free)

### Recommended Equipment: Monitor Stations

Monitor stations manage audio signals coming into your studio and route them to your monitors or headphones:

**Functions:**
- Switches between multiple input sources (computer output, interfaces, CD players, etc.)
- Routes to multiple outputs (main monitors, alternate monitors, headphones)
- Allows mono summing to check phase issues
- Provides volume control for monitors

**Benefits:**
- Enables reference track comparison without importing into your DAW
- Prevents mastering compressors from affecting reference tracks
- Simplifies switching between monitoring systems

**Key Features to Look For:**
- Multiple inputs and outputs
- Mono summing capability
- Volume control
- Talk-back functionality (for some models)

**Recommended Options:**
- Mackie Big Knob: Affordable option
- PreSonus Central Station: Includes remote control
- SPL Monitor Controllers: High-end options with digital I/O (up to $8,000)

### Recommended Equipment: Monitors and Headphones

Monitors (speakers) are the most critical link in your mixing chain:

**Studio vs. Consumer Speakers:**
- Consumer speakers have pre-set EQ curves to enhance bass and reduce mid-highs
- Studio monitors aim for flat frequency response
- TV/radio audio is compressed, making it sound harsh on studio monitors

**Monitor Recommendations:**
- Use studio monitors designed for flat response
- Brands: Adam, KRK, Mackie, Yamaha, Focal
- Have at least two reference points besides your main monitors
- Consider how your mix will sound on consumer systems

**Monitoring Guidelines:**
- Work at low levels—mistakes are more obvious at lower volumes
- Switch between speakers and volume levels frequently
- Your ears adapt quickly to volume and EQ

**Headphones:**
- Closed-back: Better for recording (less leakage), but can exaggerate bass
- Open-back: More flat frequency response, better for mixing
- Never make panning decisions on headphones
- Use headphones to check reverb/delay tails and automation details

**Headphone Recommendations:**
- Open-back: Sennheiser HD-800 (expensive but flat)
- In-ear: Etymotic ER4 (surprisingly flat response)
- Consumer reference: Bose (flatter than most consumer brands)
- Avoid headphones that significantly enhance bass (like Beats)

**Important Rule:** Do not listen at high volumes. Hearing damage is permanent and irreversible.

### Recommended Equipment: Plugins

Plugins are essential tools for mixing, but you don't need to collect every plugin available:

**Essential Plugin Categories:**

1. **Real-Time Analyzer (RTA):**
   - Visualizes frequency content
   - Helps identify frequencies that instruments are fighting over
   - Recommended: Isotope Insight, Waves, Nugen Audio, FabFilter

2. **Multi-band Compressor:**
   - Used for dynamic EQ
   - 4 bands is typically sufficient
   - Recommendations: Waves C4/C6, McDSP ML8, FabFilter

3. **EQ Plugins:**
   - Look for EQs with built-in RTAs to visualize frequencies
   - Two types: Linear EQ and Phase EQ
   - Linear EQ: More surgical, uses amplitude adjustment
   - Phase EQ: Uses phase shifting, affects the "color" of sound (like SSL EQs)
   - Recommendations: FabFilter Pro-Q, Waves H-EQ

4. **Delay:**
   - Look for delays that include output filtering (EQ)
   - Recommendations: Waves H-Delay, SoundToys EchoBoy, McDSP Echo Box

5. **Reverb:**
   - The most complex effect to emulate
   - Quality matters more with reverb than most other plugins
   - Cheap reverbs often use delays to fake reverb, causing tuning issues
   - Best options: Impulse response (IR) reverbs
   - Recommendations: Logic's Space Designer, AudioEase Altiverb, Waves IR-series
   - For hardware: TC Electronic, Lexicon, or Bricasti

6. **Pitch Shifter** (optional but useful)

Remember: You don't need to "catch them all" like Pokémon. Focus on quality over quantity.

---

## Session Setup and Organization

### Importing Tracks

When beginning a mixing project, proper session setup is crucial:

**Before Starting:**
1. Discuss sample rate and bit depth with the producer/songwriter
2. Create a new session with matching specifications (example: 48kHz, 32-bit)
3. Choose an appropriate location on a dedicated audio hard drive

**Initial Session Setup:**
1. Create necessary tracks before importing:
   - 24 stereo auxiliary inputs
   - 10 VCAs (will be explained later)
2. Import audio files:
   - Always make a copy of the original files
   - Store them on a dedicated audio hard drive (not your system drive)
3. Set session tempo (BPM) based on the song (example: 67 BPM)

**Important Storage Recommendations:**
- Use a separate drive for audio files to prevent computer sluggishness
- Implement a backup system (network drive or additional external drive)
- Remember: Hard drive failure is inevitable, so regular backups are essential

### Track Management

Organizing tracks logically makes mixing more efficient:

**Track Organization Process:**
1. Listen to all tracks (takes 15-20 minutes)
2. Group similar instruments together:
   - Drums and percussion
   - Sound effects
   - Strings
   - Brass
   - Keyboards
   - Vocals

**Using Auxiliary Tracks:**
1. Use 8 of the 24 auxiliary tracks created earlier (one for each instrument group)
2. Position them after each instrument group to:
   - Create subgroup buses
   - Visually separate instrument sections

**Naming Convention:**
- Name auxiliary tracks as "[Instrument] Master" (e.g., "Drums Master")
- Create a master track for the final output

This organization provides visual clarity and will facilitate routing in later steps.

### Color Coding

Color coding tracks provides visual assistance when your brain gets tired during long mixing sessions:

**Implementation:**
- Color code both regions and tracks, including auxiliary tracks
- Use distinct colors for each instrument group
- Ensure colors appear in both the edit and mix windows

While there's no right or wrong way to assign colors, the goal is to make instrument groups immediately identifiable at a glance.

### Groups

Groups allow multiple tracks to share behavior characteristics:

**Creating Groups:**
1. Select all tracks in an instrument category plus its auxiliary track
2. Create a group with appropriate name (e.g., "Drums")

**Group Attributes:**
- Solo follow
- Record enable follow (if needed)
- Insert bypass follow
- Volume follow
- Send level and mute follow
- Avoid pan follow (typically not needed)

**Group Types:**
- Create groups for each instrument category
- Create a separate group for effects (named "FX" without the "S")

**Group Benefits:**
- Move one fader to control all grouped tracks
- Bypass plugins across all tracks simultaneously
- Adjust send levels across all tracks at once
- Mute/solo entire sections with one click

Groups can be modified later if the default behavior isn't desired.

### Sub Groups, Aux and VCAs

This section covers advanced routing and control techniques:

**Routing Setup:**
1. Create bus outputs for each auxiliary track
2. Name the buses with "Sub" prefix (e.g., "Sub Drums")
3. Route each instrument group to its corresponding "Sub" bus
4. Route each "Sub" bus to the main output

**What This Accomplishes:**
- Creates a signal path: Instrument tracks → Sub bus → Auxiliary track → Main output
- Allows processing entire instrument groups at once
- Enables parallel compression (explained in later videos)

**VCA (Voltage-Controlled Amplifier) Setup:**
1. Name VCAs with lowercase "v" prefix (e.g., "vDrums")
2. Create VCAs for:
   - Each instrument group
   - Effects
   - Mix (all VCAs except effects)
3. Assign each VCA to its corresponding group

**VCA Benefits:**
- Unlike regular groups, VCAs allow individual fader movement within the group
- Preserve relative volume relationships when adjusting group volume
- Enable quick mix version creation (e.g., soloing strings to create strings-only mix)
- The "vMix" VCA controls overall mix level without affecting effects levels

**VCA vs. Group Control:**
- Groups force all faders to move identically
- VCAs maintain relative levels while allowing global control
- VCAs can be used with automation for more flexible control

VCAs significantly speed up mixing workflow and make creating alternative mixes much easier.