How to Edit and Mix Audio in DaVinci Resolve Fairlight

TL;DR

Fairlight audio work rests on understanding sound itself: amplitude sets how loud a sound is, frequency sets its pitch, and decibels measure intensity on a logarithmic scale. A full Fairlight course covers the interface, clip and track level edits, automation, buses and routing, mixing dialogue with music and effects, and loudness for delivery. Check delivery requirements before starting.

Transcript

Hi, I'm Jason Roberts and welcome to this Da  Vinci Resolve Fairlite fundamentals course.   You'll learn about the essential effects, how to  mix audio, how to automate properties over time,   and much more. Most of what we'll cover in this  course applies to both the free and paid versions   of Resolve, though some effects we'll look at,  like the... Read More

Key Insights

• Sound is a mechanical wave created when something vibrates and pushes air particles, producing fluctuations in air pressure that travel through air, water, or solid objects until they reach the listener's ears and are perceived as sound.
• Amplitude refers to the height or strength of a sound wave and determines how loud or quiet a sound is. In DaVinci Resolve, amplitude is visualized in the clip waveform display, where taller waveforms mean louder sounds.
• Dynamic range is the difference between the quietest and loudest sounds in an individual clip or across the whole timeline. Adjusting amplitude is one of the major ways editors control balance between different elements of a soundtrack.
• Frequency is the number of vibrations or cycles occurring every second in a sound wave, measured in hertz. Higher frequency means higher pitch, so a whistle sits high while a deep voice or bass guitar sits low.
• The range of human hearing typically starts around 20 hertz and extends to 20,000 hertz, or 20 kilohertz. Audio work in Fairlight therefore concentrates on this human hearing range rather than frequencies outside it.
• Decibels are a logarithmic unit for measuring sound intensity, not a linear one. A sound at 40 decibels is not twice as loud as one at 20 decibels, it is considerably louder, which is why the scale must be read carefully.
• Room acoustics, meaning a room's size, shape, and materials, significantly affect the sound you hear through speakers. A small room with hard surfaces creates unwanted reflections and muddiness, while acoustic panels, thick carpet, and soft furniture change the result substantially.
• Track level adjustments in Fairlight affect every clip on that track, unlike clip level adjustments. Understanding this distinction determines whether an effect or change should be applied to one piece of audio or to an entire group of material.

Questions & Answers

Q: What is sound and how does it travel?

Sound is a mechanical wave: vibrations that travel through the air, water, or even solid objects. When something vibrates, it creates fluctuations in air pressure, and those fluctuations, called sound waves, travel through the medium until they reach our ears. A drumstick hitting a drum makes the drum head vibrate, which pushes and pulls the surrounding air particles, creating waves that the ear perceives as sound. Understanding this matters because everything you do with audio in Fairlight is based on how sound works in the real world.

Q: What is amplitude in audio and why does it matter when mixing?

Amplitude refers to the height or strength of a sound wave, and it determines how loud or quiet that sound is. The bigger the amplitude, the louder the sound. When editing audio you are frequently adjusting amplitude to increase or reduce volume, which makes it one of the major ways you control balance between the different elements of a soundtrack. Pressing volume up on a phone increases amplitude and pressing down reduces it. In DaVinci Resolve, amplitude appears visually in the waveform display of clips, where taller waveforms represent louder sounds and shorter ones represent quieter sounds.

Q: How does frequency relate to the pitch of a sound?

Frequency refers to the number of vibrations or cycles that occur every second in a sound wave, and its unit is hertz. A low frequency means fewer vibrations per second, while a high frequency means more vibrations per second. One thousand hertz equals one kilohertz. When people talk about pitch, they are really talking about frequency: a high pitch corresponds to a high frequency, like a whistle or a smoke alarm, while a low pitch corresponds to a low frequency, like a deep voice, a bass guitar, or the rumble of thunder.

Q: Why is the decibel scale not linear?

Decibels, abbreviated dB, are a logarithmic unit used to measure the intensity of sound. Because the scale is logarithmic rather than linear, a sound at 40 decibels is not twice as loud as a sound at 20 decibels, it is actually much louder than that comparison would suggest. In the real world, zero decibels is the faintest sound a person can hear, whispering sits around 30 decibels, and normal conversational talking is around 60 decibels. Exposure above 85 decibels for extended periods may cause permanent hearing loss, and a loud enough sound can cause damage even briefly.

Q: How does sound behave in a room and why should editors care?

Sound behaves in three key ways. Reflection happens when a wave hits a hard surface such as a wall or hard floor and bounces back, which is why an empty room sounds different from one filled with soft furniture. Absorption happens when softer materials such as curtains or foam panels soak up sound, reducing echo and reverberation. Diffraction is when waves bend around obstacles or spread out through openings, which is why you can hear people talking around corners. These behaviors affect the clarity and accuracy of what you hear while editing, so your room influences your mixing decisions.

Q: Do I need acoustic treatment if I mix on headphones?

Room acoustics are essential when setting up a listening environment for mixing on speakers, because the size, shape, and materials of the room significantly affect the sound quality you hear. This is not such an issue when using headphones, since they sit right up against your ears and you are not really hearing reflections from the room. With speakers, a small room with hard surfaces causes waves to bounce around, leading to unwanted reflections and muddiness that make it hard to hear what is happening in your mix. Acoustic panels on walls and ceilings, thick carpet, and a soft couch change that considerably.

Q: What is the difference between clip level and track level adjustments in Fairlight?

Clip level work covers cutting, moving, and making adjustments to individual audio clips, which the course describes as the bread and butter of working with audio on the Fairlight page. Track level adjustments, tools, and effects operate differently: when you make a change at the track level, it affects all clips sitting on that track rather than just one. Knowing which level to work at determines whether a change applies narrowly to a single piece of audio or broadly across an entire track's worth of material, which affects both the result and how much editing time you spend.

Q: What should I check before starting an audio project in Resolve?

Always check with your client, customer, or whichever platform you are delivering to before starting work on the project. Knowing the delivery requirements up front saves a large amount of time and hopefully means you avoid having to redo work later, particularly around loudness. The course's final module covers how to check and manipulate the overall loudness of your video so it meets the client's or delivery platform's requirements, so confirming those specifications at the outset lets you work toward the right target from the beginning rather than correcting the mix at the end.

Summary & Key Takeaways

• The course is organized into eight teaching modules plus an introductory module and a closing summary module. It begins with the physics of sound, then the Fairlight user interface, clip level editing, track level tools and effects, automation, buses and routing, mixing, and finally loudness and delivery standards. Most content applies to both the free and paid versions of Resolve.

• Sound is a mechanical wave: vibrations traveling through air, water, or solid objects that create fluctuations in air pressure. Amplitude is the height or strength of the wave and determines loudness, while frequency is the number of cycles per second, measured in hertz, and determines pitch. Human hearing typically spans roughly 20 hertz to 20 kilohertz.

• Sound behaves differently depending on the environment through reflection off hard surfaces, absorption by soft materials like curtains and foam, and diffraction, where waves bend around obstacles or spread through openings. Room acoustics therefore shape what you actually hear while mixing, which is why acoustic treatment helps you make better mixing decisions when working on speakers rather than headphones.