Tiffany Haney
Panning audio is a way to create the impression of a sound moving from one direction to another. It involves adjusting the volume of an audio source in a left or right channel, with the sound increasing in volume in one channel and decreasing in the other. This technique is particularly noticeable when using stereo headphones. There are a number of ways to achieve this effect, including using audio software with built-in auto-pan features, or manually adjusting the panning using audio mixing software or a digital audio workstation (DAW).
| Characteristics | Values |
|---|---|
| Purpose | To create the impression of a moving source in an audio track |
| Use case | Stereo tracks |
| Tools | Pan control, pan pot, audio mixing software, knobs, sliders, binaural panning |
| Techniques | Automation, volume automation, binaural panning, widening the sound, using reverb |
| Parameters | Amount of LFO modulation, LFO rate type, loops, apply volume, end condition, start offset, end offset |
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What You'll Learn
Using panning tools to position audio tracks
Panning is a fundamental technique used in music production to sculpt the stereo image of your tracks, shaping the spatial placement of audio elements between the left and right channels. It is a crucial tool that helps create a sense of width and depth, making your tracks more immersive. When combined with reverb and delay effects, panning can transform a flat, lifeless mix into a dynamic, three-dimensional experience for the listener.
Panning in your mixes allows you to spread instruments out across the stereo image, so that the listener perceives the sound as coming from a specific point between the left and right speakers. It allows you to control the location of the instrument in the stereo image, as well as how wide or narrow the instrument sounds. For example, placing the pan pots hard left and hard right will spread the instrument across the entire stereo image. Moving each pan pot inwards towards the centre will keep the instrument located across the centre but make its width narrower.
The process of panning is the same whether you are working with mono or stereo tracks. When dealing with mono tracks, panning is more straightforward; you have one audio channel and can position it to the left or right according to your preferences. With stereo tracks, you have two separate audio signals coming from the left and right. Some software instrument tracks might only have subtle differences between the left and right signals, while others might have more noticeable differences.
Apple's Logic Pro is a popular digital audio workstation (DAW) that provides multiple tools for repositioning the source of your audio for stereo outputs. Logic's Binaural Panning tool allows you to adjust the position of your track beyond just moving to the left or right. You can reposition the source of your signal in a three-dimensional space by moving it closer or further away from the listener.
Panning plays a vital role in music production, contributing to the overall mixing process and stereo imaging of a track. It helps create a sense of space, width, and depth in your mix, ensuring each element has its place. Proper panning creates a balanced audio mix, preventing audio elements from clashing and giving your music a professional, polished sound.
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Stereo tracks vs mono tracks
Stereo and mono tracks are two types of audio recordings that differ in the number of audio channels used. Monophonic (mono) audio is a single-channel recording with one audio source, resulting in the same audio information being transmitted to both speakers or a single speaker. This means that a mono track will reach both ears without any difference in what is heard in the left or right side, creating a flat and direct sound without a sense of direction. Mono recordings were the original format for music as early playback systems often had a single speaker.
Stereophonic (stereo) audio, on the other hand, uses two channels, delivering different audio information to the left and right speakers. This mimics how sound is naturally heard in the real world through our two ears. Differences in timing, level, and timbre between the two channels allow our brains to subconsciously determine the location of the sound source, a phenomenon known as spatialization.
When dealing with mono tracks, panning is more straightforward. You can position the single audio channel to the left or right as per your preference. Stereo tracks, however, present two separate audio signals coming from the left and right channels, offering more complexity in panning.
While mono recordings are rare today, they still hold importance in music production, especially when recording live instruments to avoid issues like phase cancellation and comb filtering. Stereo recordings, on the other hand, are commonly used to capture natural spatial qualities of certain instruments or sounds, such as drum overheads, room microphones, piano, or stereo synth patches.
In summary, the choice between stereo and mono tracks depends on the specific requirements of the recording project. Mono tracks are simpler and more direct, while stereo tracks offer a more immersive and multi-dimensional listening experience by providing distinct audio information to the left and right speakers.
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Controlling audio levels
Panning is a useful technique to separate different instruments and make everything sound clearer. It can also be used to create an atmosphere and a multi-dimensional experience for the listener.
When dealing with mono tracks, panning is more straightforward. You can position the audio channel to the left or right according to your preference. Stereo tracks, on the other hand, have two separate audio signals coming from the left and right channels. This creates a stereo feel, with the source moving from left to right or vice versa.
To control audio levels when panning, you can adjust the pan position slider. Setting the slider to 0 will balance the sound equally between the left and right channels. Moving the slider to larger negative values will increase the volume in the left channel while decreasing it in the right, and larger positive values will have the opposite effect, increasing the volume in the right channel and decreasing it in the left.
Additionally, you can adjust the depth of the pan, determining how far the automatic pan occurs in the left and right channels. You can also set the direction of the pan, choosing to increase the volume in one channel while decreasing it in the other, creating the impression of sound moving from one direction to another.
Volume automation can be used in conjunction with panning automation to ensure that the track remains at the desired volume level as it moves from left to right. This prevents the track from becoming too loud or soft in certain sections.
Some software, like Ableton's AUTO PAN, allows you to control the amount of LFO modulation applied to the incoming signals, toggle the phase of the LFOs, and set the LFO rate type to synchronize with a specific frequency or the song's BPM.
When using auto-panning, it is important to consider the balance of the mix. You can try using opposite effects to balance out the panning, such as a simple light chorus with some reverb, or a saturation/tube amp plugin. This can help prevent the auto-panned element from becoming too dominant or obnoxious in the mix.
Additionally, you can manually draw in your panning automation to have specific movements at specific times in the song. This allows for more precise control over the panning and can be done by pencil or using a MIDI controller to record it.
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Automating panning
One popular DAW for automating panning is Ableton Live, which offers an AUTO PAN audio effect. This effect automatically pans the audio track from left to right following a pattern of movement determined by the effect's parameters. To use this feature, create a Live Set with at least one track, typically a MIDI track with a mono virtual instrument assigned. Then, drag and drop the Auto Pan audio effect onto the desired audio track. The parameters of the Auto Pan effect can be adjusted, including the amount of LFO modulation, toggling between Normal and Invert phases, and setting the LFO rate type to either Hertz or song tempo.
Apple's Logic Pro is another renowned DAW that provides panning capabilities. Logic Pro allows users to pan mono and stereo audio channels in multiple ways. The pan/balance knob can be accessed through the track header area, the inspector menu, or the mixer. By control-clicking on this knob, users can select Binaural Panning, which enables them to move signals left or right and adjust the distance of the sound source from the listener. Additionally, Logic Pro offers automation techniques to move signals and create dynamic projects.
Other software, such as Apple Motion, provides Audio Auto Pan behaviour to automate commonly used panning effects. This feature includes sliders and settings to adjust the pan position, depth, direction, loops, apply volume, and start and end offsets. These controls allow users to set the number of repetitions for the auto pan effect, choose how audio levels change, and determine the starting and ending points of the effect.
It is important to note that when working with stereo tracks, the process can be more intricate due to the presence of two separate audio signals. Additionally, consider using volume automation in conjunction with panning automation to maintain a consistent perceived volume level as the sound moves across the stereo field.
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Using Ableton's AUTO PAN audio effect
Ableton's AUTO PAN audio effect is a stock effect included in Live that gives a track a "stereo feel" by automatically panning it from left to right. This saves the user from manually automating the pan pot of the track. The AUTO PAN feature allows you to "move" the source from left to right of the stereo field following an LFO frequency or the song's tempo.
- Create a Live Set with at least one track.
- From the Browser, search for Audio Effects -> Auto Pan.
- Drag and drop the Auto Pan audio effect on top of the audio track.
- Configure the Auto Pan audio effect.
The following are some of the parameters included in the Auto Pan audio effect:
- Amount: Controls the amount of LFO modulation applied to the incoming signals.
- Normal/Invert: Toggles the phase of the LFOs.
- LFO Rate Type: Switches between Hertz and song tempo. When set to Hertz, the LFOs are synchronized to a certain frequency; when set to song tempo, they are synchronized to the BPM of the song.
Additionally, you can use Auto Pan as an alternative to sidechain compression. This technique allows you to quickly duck the volume of any sound in your mix. You can set up Auto Pan to function like a sidechain compressor by setting the LFO Waveform button to sawtooth, toggling the Normal button to invert the phase, and adjusting the Phase control to 0 degrees.
You can also experiment with the stereo image of a track using Auto Pan's parameters like Phase, Shape, Rate, and Offset to create new textures and turn your synth pads into tremolo-like sounds.
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Frequently asked questions
Panning is the distribution of an audio signal (either monaural or stereophonic pairs) into a new stereo or multi-channel sound field determined by a pan control setting.
First, create a Live Set with at least one track. Then, drag and drop the Auto Pan audio effect on top of the audio track. You can then configure the Auto Pan audio effect by adjusting the Amount, Normal/Invert, and LFO Rate Type.
You can adjust the behaviour using the controls in the Behaviors Inspector. The Pan Position slider sets the position of the pan, the Depth slider sets how far the automatic pan occurs in the left and right channels, and the Direction pop-up menu sets the direction in which the pan moves.
Try using volume automation in congruence with panning automation to keep the track at the same perceived level as it moves from left to right. You can also try using a simple light chorus with some reverb or a saturation/tube amp plug-in to balance out the effect of the panning.
