Subject: Acoustics of BTE hearing aid 'plumbing' From: "Richard H." <auditory@xxxxxxxx> Date: Sun, 10 Jun 2007 16:54:58 +0100 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Hi, I feel that the acoustics of behind-the-ear hearing aid plumbing i.e. the tubing, the "horn", "filters", "dampers" and the earmould are little discussed. Can anyone recommend a book or PDF which has a considered & detailed review of the acoustic performance (bandwidth, resonances etc) of these various components? Many thanks. Richard