| 2025-03-30 | Returns a call, in a way |
| 2023-11-29 | REPEATS, repeats, repeats … |
| 2021-10-17 | Makes a comeback? |
| 2021-05-24 | Sounds heard in canyons |
| 2019-08-21 | Bounces off the wall, say |
| 2018-12-16 | Diminishing returns? |
| 2018-06-08 | Offers a similar opinion to |
| 2016-11-07 | Repeats word for word |
| 2010-06-26 | Hollow replies |
| 2010-05-13 | They repeat whatever you say |
| 2008-12-21 | Repeat calls? |
| 2008-12-14 | Comes back the same |
| 2007-10-11 | Repeats |
| 2006-10-09 | Sounds in an empty hall |
| 2006-04-01 | Feedback |
| 2005-06-17 | Hints of the past |
| 2004-10-24 | Talks back? |
| 2002-01-04 | They may be found in long halls |
| 2001-11-11 | Sound technicians' worries |
| 1998-12-08 | Parrots, in a way |
| 1997-06-25 | Alpine sounds |
| 1995-12-21 | Sonar blips |
| 1995-11-05 | Radar blips |
| 1995-02-16 | Bounces back |
| 1994-09-25 | Rings |
| 1994-05-23 | Reverberations |