Voice-tracking, also called cyber jocking and referred to sometimes colloquially as a robojock, is a technique employed by some radio stations in radio broadcasting to produce the illusion of a live disc jockey or announcer sitting in the radio studios of the station when one is not actually present. It is one of the notable effects of radio homogenization.

Voice-tracking refers to the process of a disc jockey prerecording their on-air "patter". It is then combined with songs, commercials, and other elements in order to produce a product sounding like a live air shift. Voice-tracking has become common on many music radio stations, particularly during evening, overnight, weekend, and holiday time periods. Most radio station owners consider it an economical alternative to employing live disc jockeys around the clock.

The process goes back decades and was very common on FM stations in the 1970s. At that time, elements were recorded on reel-to-reel magnetic tapes and broadcast cartridges and played by specialized professional audio equipment. It has become more controversial recently as computer technology permits the process to be more flexible and less expensive, allowing for fewer station employees and an effective illusion of live, local programming. With the repeal of the FCC's Main Studio Rule in 2017, these studios have begun to be shut down, and a station can be centralcast from a radio group's headquarters thousands of miles away with the only localization occurring with weather forecasts, local news (if even broadcast) and local advertising.

Most contemporary broadcast automation systems at music stations effectively function as high-tech jukeboxes. Pieces of audio footage are digitized as computer files and saved on one or more hard drives, or stored off-site through a company's cloud computing system. Station personnel create "program logs" which list exactly what is supposed to be on the air and in what order. The computer follows the instructions set out in the playlist.

In some cases, voice-tracking is done to give station employees the flexibility to carry out other responsibilities. For example, a DJ may also have managerial duties as a program director or general manager. Voice-tracking allows that person to record a three-hour air shift in considerably less time, freeing them up to do office work. Alternatively, a popular live weekday morning host can record voice tracks throughout the week for a Saturday show, allowing them to be on the air six days a week without extra physical presence each Saturday.

Companies housing more than one station can use the technique to stretch out their air staff. For example, the live midday disc jockey on a country station can then record voice tracks for the overnight shift of the sister rock station (often using a different name).

Some "cyber jocks" provide voice-tracking services for several different radio syndication stations (and in several radio formats), sometimes affiliates located hundreds of miles away from each other that are all part of a radio network.

One notorious form of voice-tracking involves using out-of-market talent. In this form, the station contracts with a disc jockey in another city (often employed by the same corporation, but sometimes as a freelancer). The outsider will add local color using information provided by the station and news stories gleaned from newspapers available on the Internet. The recorded voice tracks are then sent to the station. DJs of this style often make a point of trying to sound as local as possible, sometimes going so far as falsely claiming to have visited a local landmark or attended a station's promotional event. However, sometimes the DJ has actually been to the location, or monitored the event online and can speak with knowledge about it without making a claim to having been there that day, although it may be implied.