My Ardour project contains a master track and a 2 channel track. The 2 channel track contains a single 2 channel 24/44.1 WAV file. No signal processing of any sort was used.
When I export this project to 24/44.1 WAV, there is a faint echo that takes place about 85 seconds after the main sound.
This would be the first time I have heard anything like this, can you post up your session somewhere to look at and the export you are hearing the echo in?
Last night I exported several WAV files that suffered from echoes. This morning I created a new session and I’m glad to say that I could not reproduce the echo problem.