Echo editor

Echo presets - choose among a number of predefined echo effects, add and manage your own
Lock left/right - by default echo editor can change left and right channel of stereo output separately. Checking this box will disable this possibility enabling only one feedback value for each delay.
Amplify - if the echo lowers the volume of sound output too much, you can amplify the final volume with this slider. High values may lead into sound distortions.
Number of echos - echo editor can make up to 10 sound reflections of sound signal. The more reflections, the more CPU power needed.
Echo values - delay is set in tenths of milisecond, maximum delay is 1 second (9999 tenths of second). The higher the feedback is the louder the appropriate reflection will be. Negative value reverts sound channel (sample will be played "upside down"). This effect can be used for making surround sound (check the presets).