(ばいそく)

ばいそく
noun
double speed; fast speed; multiplied speed
1. double speed; multiplied speed
A rate of playback or operation that is a multiple of the normal speed. Often used with a number prefix to specify the multiplier.
動画(どうが)倍速(ばいそく)()る。
To watch a video at double speed.
倍速(ばいそく)再生(さいせい)にすると時間(じかん)節約(せつやく)になる。
Using fast playback saves time.
講義(こうぎ)録画(ろくが)を1.5倍速(ばいそく)()いて復習(ふくしゅう)した。
I reviewed the recorded lecture by listening at 1.5 times speed.

(ばい) (double, times) + (そく) (speed). Very commonly used in the context of video and audio playback. On its own, 倍速(ばいそく) usually means double (2x) speed, but it is frequently combined with a number to specify the exact multiplier.

COMMON COLLOCATIONS:

  • 倍速(ばいそく)再生(さいせい) — fast playback
  • 倍速(ばいそく)()る — watch at double speed
  • 1.5倍速(ばいそく) — 1.5 times speed
  • 2倍速(ばいそく) — double speed
  • 3倍速(ばいそく) — triple speed

CULTURAL NOTE:
Watching videos and lectures at 倍速(ばいそく) has become extremely common in Japan, especially among younger generations. The term 倍速(ばいそく)視聴(しちょう) (fast-speed viewing) is used in media discussions about changing consumption habits.