Doubling

Doubling may refer to:

Math:

• Multiplication by 2
• Doubling the cube, a geometric problem
• Doubling time, the period of time required for a quantity to double in size or value
• Doubling map
• period-doubling bifurcation

Music:

• The composition or performance of a melody with itself or itself transposed at a constant interval such as the octave, third, or sixth, Voicing (music)#Doubling
• The assignment of a melody to two instruments in an arrangement
• the playing of two (or more) instruments alternately by a single player, e.g. Flute, doubling piccolo
  • Musicians who play more than one woodwind instrument are called Woodwind Doublers or Reed Players
• Doubletracking, a recording technique in which a musical part (or vocal) is recorded twice and mixed together, to strengthen or "fatten" the tone.

Linguistics:

• Syntactic doubling is a phenomenon consisting in the lengthening (gemination) of the initial consonant of certain words

Psychodrama:

• Doubling (psychodrama) is a technique of provoking a protagonist by a participant, for effect.

Firearms:

• When more than one round is fired in a semiautomatic gas powered rifle with only one pull of the trigger, also known as a slam fire.

Two-way radio:

• Doubling is where two or more transmitters transmit at once on the same frequency, interfering with one another and garbling all messages.

Other:

• Doubling (yarn) is the process of combining two or more lengths of yarn into a single thread.