Surround Sound Secrets: Panning For Better Backgrounds

how to pan background surround mixing

Surround sound mixing is a type of sound design that aims to immerse the listener in audio, placing them in the centre of the action. It is achieved by utilising multiple sound channels to recreate sound, placing speakers or monitors at several points around the listener. The most common version of surround sound is 5.1, which uses six surround channels in total. Mixing in surround sound is much like mixing in any other environment, except instead of feeding your signal to the left and right speakers, you separate your sound across six or eight channels for a more immersive effect. This can be done using a virtual mixing room. Surround panning is a key part of surround sound mixing, and it involves automating where a sound is heard in the aural space.

Characteristics Values
Goal To immerse the listener in audio
Channels Left, Center, Right, Left Surround, Right Surround, LFE
Panning automation Preview Mode, Touch Automation, Latch Automation
Surround formats 5.1, 7.1, Dolby Atmos
Surround panning controls Accessible from any track's output window
Pan Cursor Drag to move the signal in a more immersive space
Speaker icons Visual indicators of speaker locations and output channels
Mixing environment Physical or virtual mixing room
Auxiliary busses Should be aligned with the version of surround sound
Stereo mix Can be created alongside a surround sound mix

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Panning automation

There are six discrete channels in 5.1 audio: Left, Center, Right, Left Surround, Right Surround, and LFE. Panning automation allows you to pull sound away from the center channel to make room for dialogue. This is especially important in surround sound mixing, where the placement of sound around the listener dramatically impacts their experience.

There are several ways to write panning automation. Preview Mode allows you to preview the automation before committing it to your session. Touch Automation enables you to write live panning automation, useful for chasing action on the screen. The Pencil tool is another method, but it is more complex as multiple pan automation playlists are involved.

When writing surround pan automation, you can drag the Pan Cursor to move your signal in a more immersive space. The dot within the panning field indicates the current pan location and can be repositioned by clicking and dragging. The Pan Cursor will appear green when mix automation is being read and red when automation can be written.

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Stereo and surround mixes

Surround sound is designed to envelop the listener from as many angles as possible, creating an immersive audio environment. This is achieved by pulling sound away from the center channel to make room for dialogue or other important sounds. Surround panning can be automated, allowing you to write in Left or Right panning automation and manually adjust the positioning of sounds in the aural space.

When creating a stereo mix, you can use the X-Y panning method or 3-Knob panning modes. The Center % knob in the X-Y method determines the involvement of the center channel. Setting it to 100% means the sound will only be heard through the center channel, while setting it to 0% will create a phantom center image through the Front Left and Front Right speakers.

In a surround mix, the process becomes more complex. You can use surround panning controls in the output window of your track to separate your sound across multiple channels. This can be done through panning automation modes such as write, touch, and latch, or by using the Pencil tool to draw the automation. Surround mixing is especially useful for sound effects like rivers or streams, allowing for greater clarity and intensity in the mix.

It is important to note that surround mixing is not a replacement for stereo mixing. Both techniques have their advantages and are suitable for different situations. As a producer or engineer, it is beneficial to understand the principles of both stereo and surround mixing to create engaging sonic environments for your listeners.

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Using a virtual mixing room

A virtual mixing room is a digital alternative to a physical mixing console. It is a software program that interfaces with a digital console via MIDI and Digital Audio. The software program is designed to run on a separate computer, offering a range of functions and capabilities for mixing audio.

Virtual mixers are based on their physical counterparts, with controls for volume, pan and tone. However, they also offer a range of additional functions and capabilities that can enhance the mixing process. One of the key advantages of using a virtual mixer is the ability to easily add plug-ins and additional functions to the mixer. These plug-ins can include equalizers, filters, reverb, echo and other processors that can be used to enhance the overall mix.

Another benefit of using a virtual mixing room is the ability to visually represent the mix in a 3D space. This allows for a more intuitive and immersive mixing experience, where sounds can be placed and moved around in a virtual environment. This can be done using a mouse, touch-sensitive screen or dataglove, which sends MIDI information to the mixer and pans the sound in real time. This visual representation also allows for more precise control over the volume of each sound, with the option to bring certain sounds forward or push them into the background.

When using a virtual mixing room, it is important to understand the principles of panning, especially when working with surround sound. Panning involves placing sounds in the stereo or surround sound field, and can be used to indicate the onscreen location of sound effects or create a sense of motion. In a surround sound mix, the standard left/right pan control is replaced with a surround panner, which can take the form of a circle or a box with markers for different channels. It is also important to consider the placement of dialogue, ensuring that it is clear and not obscured by other sound effects or elements in the mix.

Overall, a virtual mixing room offers a range of benefits and capabilities that can enhance the mixing process, providing a more immersive and visual approach to creating and manipulating sound.

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The Pan Window

In the Pan Window, the panning field represents the surround format chosen for the track's output. It consists of a dot, known as the Pan Cursor, and several speaker icons. The dot indicates the current pan location and can be repositioned by clicking and dragging it within the panning field. This action writes the pan automation, determining where the sound is heard in the aural space.

The speaker icons in the Pan Window serve as visual indicators of speaker locations and output channels. Clicking on a speaker icon instantly moves the Pan Cursor to the corresponding channel. The number and position of these icons vary depending on the chosen surround format, such as the commonly used "5.1" format.

To access the Pan Window in a DAW (Digital Audio Workstation), users can navigate to the output window of the desired track. This window provides controls for surround panning, allowing users to adjust the positioning of sounds across the six discreet channels in 5.1 audio: Left, Center, Right, Left Surround, Right Surround, and LFE.

By utilising the features of the Pan Window, mixers can create a sense of space and clarity in their audio mixes. This involves strategically positioning different elements, such as keeping lower-frequency sounds and lead vocals in the centre while panning other sounds to the left or right. Additionally, experimenting with hard panning and creating different panning schemes for verses and choruses can add dynamics and impact to the overall mix.

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Dolby Atmos

To create a Dolby Atmos mix, you will need to assign tracks to outputs on the Dolby Atmos Renderer. For example, the front channels might be routed to outputs 1 and 2, the centre channel to output 3, and so on. This configuration ensures that audio is directed to the correct speakers. Proper organisation and clear labelling of each track are crucial, especially when working with multiple audio sources and complex routing.

Next, import your audio stems into your DAW. These stems should be the individual audio elements such as vocals, instruments, and effects that you'll be mixing. Route each stem to the appropriate auxiliary track based on its desired spatial position. You can then use the DAW's surround panning tools to position each audio element within the 3D space.

When working with Dolby Atmos, it's important to understand the concept of "beds" and "objects". A "bed" refers to a traditional speaker setup, such as 5.1 or 7.1, while an "object" is a specific sound source that can be positioned anywhere in the 3D space. When a track is assigned to a bed, the output window will look like any non-Dolby surround panner. When a track is assigned to an object, you'll see an additional button indicating the object, and the Bus Output selector will be coloured blue.

To engage the 'wide' speakers positioned between the front and side channels in a 9.1.x setup, you must use objects. Panning an object at exactly 68% at ground level using the Pro Tools surround panner is the only way to completely isolate information in those wide speakers.

When mixing orchestral music in Dolby Atmos, the panning is similar to that of a 5.1 or 7.1 setup, with the mix built around the main room mics. The dry mics are panned to the positions of the instruments on stage, while the ambient mics are panned to the back. The room mics can be panned to the same place as the dry signal or to the front speakers, opposite the ambient mic.

Effects and spatial audio techniques can greatly enhance your Dolby Atmos mix. Surround reverbs, for example, help to create an immersive environment, adding a sense of space to vocals and ambient sounds. Surround panners allow you to move audio objects within the 3D space, creating a dynamic and engaging audio experience.

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Frequently asked questions

Surround panning is a type of sound design that aims to immerse the listener in audio, placing them in the centre of the action.

Stereo mixes are experienced through two speakers, or left and right channels. Surround mixes use a much higher number of channels, surrounding the listener from as many angles as possible.

5.1 surround sound is a common version of surround sound, using six channels: Left, Centre, Right, Left Surround, Right Surround and LFE.

5.1 surround sound offers a more immersive listening experience, with enriched clarity and higher fidelity than stereo mixes.

To pan background sounds in 5.1 surround sound, you can use panning automation to pull sound away from the centre channel, making room for dialogue. You can access the surround panning controls in any track's output window.

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