Klankbeeld bells with kid play echoed.aiff

I'm looking for certain properties in ambient sound that enhance meditative attention. I took a 5 minute segment of church bells from Klankbeeld's 178136 and looped it to make a 35 minute track. Then I took Klankbeeld's 167824, kids playing, and looped it to form a second 35 minute track. I used Audacity to put an echo on this second track. (.7 sec. repeat, .3 decay factor as I recall). Then I mixed the two tracks to a single AIFF file with Audacity. I have found that it enhances and trains attention to follow small sounds within a larger matrix of sound. I used the echoes to help me follow small sounds until they got smaller and eventually decayed to zero. So, despite the general cacophony, my takeaway experience is one of a sort of silence. More about this later. This is just a preliminary experiment. For simplicity at present I use only Klankbeelts sound from Freesound.org. This simplifies attribution, and he has a very good ear for catching the many small sounds that make up a larger soundscape. I have added some further comments about possibilities for using Freesound as a resource for meditators, etc. at Forums > Off topic > Sound thoughts to Klankbeeld.