I recently recorded some subjects reading lists of words and sentences. The recordings were taken on a ZOOM H4N recorder, sampled at 44100HZ, on a head-mounted condenser microphone.
The recordings would be high-quality if there were no echo. I want to do forced-alignement on these recordings and measure intensity as a correlate of the lenition of voiced stops.
How bad are echoes for taking measurements? Is there a way to filter the echo out?