Тректерді үйлестіру және темпті теңестіру техникасы

DJing technique of manipulating an adjacent track to match the tempo of the current track

Beatmatching or pitch cue is a disc jockey technique of pitch shifting or time stretching an upcoming track to match its tempo to that of the currently playing track, and to adjust them such that the beats (and, usually, the bars) are synchronized—e. g. the kicks and snares in two house records hit at the same time when both records are played simultaneously. Beatmatching is a component of beatmixing which employs beatmatching combined with equalization, attention to phrasing and track selection in an attempt to make a single mix that flows together and has a good structure. The technique was developed to keep the people from leaving the dancefloor at the end of the song. These days it is considered basic among disc jockeys (DJs) in electronic dance music genres, and it is standard practice in clubs to keep the constant beat through the night, even if DJs change in the middle.

The pitch and tempo of a track are normally linked together: spin a disc 5% faster and both pitch and tempo will be 5% higher. However, some modern DJ software can change pitch and tempo independently using time stretching and pitch shifting, allowing harmonic mixing. There is also a feature in modern DJ software which may be called "master tempo" or "key adjust" which changes the tempo while keeping the original pitch.

Francis Grasso was one of the first people to beatmatch in the late 1960s, being taught the technique by Bob Lewis. These days beat matching is considered central to DJing, and features making it possible are a requirement for DJ oriented players. In 1978, the Technics SL 1200MK2 turntable was released, whose comfortable and precise sliding pitch control and high torque direct drive motor made beat matching easier and it became the standard among DJs. With the advent of the compact disc, DJ oriented compact disc players with pitch control and other features enabling beat matching (and sometimes scratching), dubbed CDJs, were introduced by various companies. More recently, software with similar capabilities has been developed to allow manipulation of digital audio files stored on computers using turntables with special vinyl records (e. g. Final Scratch, M Audio Torq, Serato Scratch Live) or computer interface (e. g. Traktor DJ Studio, Mixxx, VirtualDJ). Other software including algorithmic beat matching is Ableton Live, which allows for realtime music manipulation and deconstruction. Freeware software such as Rapid Evolution can detect the beats per minute and determine the percent BPM difference between songs. Most modern DJ hardware and software now offer a "sync" feature which automatically adjusts the tempo between tracks being mixed so the DJ no longer needs to beatmatch manually.