 Slapback echo Slapback echo uses a longer delay time ( 75 to 250 milliseconds), with little or no feedback.
<meaning-changed>  Slapback echo Slapback echo uses a longer delay time ( 75 to 250 milliseconds), with little or no feedback.
 Slapback echo Slapback echo uses a longer delay time ( 60 to 250 milliseconds), with little or no feedback.