 Applications and variants       Doubling echo Doubling echo is produced by adding short delay to a recorded sound.
<meaning-changed>  Applications and variants       Doubling echo Doubling echo is produced by adding short delay to a recorded sound.
 Applications and variants Ping-pong delay In a ping-pong delay, the delayed signal alternates between two stereo channels. Doubling echo Doubling echo is produced by adding short delay to a recorded sound.