As technologies like 3D audio and spatial audio have become more affordable and more commonplace, Foley artists are using them more often and in more ways than ever before. Foley artists attempt to recreate the ambience of a scene, such as the sounds of a room, a car, or a train. They can also create sounds of substances and other materials. Once Foley artists create these sounds, they are added to the soundtrack and sometimes the film’s dialogue at the post-production stage. As the technology of recording audio has advanced, Foley artists have used it to create sounds that previously had not been possible, such as eating, breathing, crying, and sneezing. Foley effects can also be used to attempt to create a more dynamic sound on the computer, unlike more traditional foley recording on stage that is shaker-based. Using computer and recorded effects, the sound can be made more dynamic, which is useful from a storytelling point of view. Foley effects can also be applied to dialogue, where the sound of a breathe, a cough, a yawn, and so on, is recorded.
From a technical standpoint, Foley is almost always recorded on individual tracks in separate sessions. If the production is being mixed in a two-channel facility, then two separate tracks are mixed, with the "filling" track extending the length of "negative" track to the desired number of bars. This balance is controlled by the "filling" track's L/R ratio, the "negative" track's L/R ratio and the mix of those tracks. One or both Foley speakers are carefully positioned and placed in the same space where the negative track is being placed – usually close to or just behind the negative track. The negative track is almost always placed on the left side of the theater, while the Foley track is usually on the right.
The sounds are captured on a Foley track using whatever suitable device fits the needs of the particular Foley application. For example, there are Foley recorders that use electromagnetic circuits to detect the mark on the Foley track, cuing the beginning or end of a sound to minimize the chance of an inadvertent trigger at the exact moment the mark is hit. d2c66b5586