thresholds, equal loudness and masking (Sanja Dupor )

Subject: thresholds, equal loudness and masking
From:    Sanja Dupor  <106744.1511(at)COMPUSERVE.COM>
Date:    Mon, 21 Jun 2004 06:15:28 -0400

Dear list,

where could I find (for free) data (not pictures!) of threshold of hearing,
equal loudness and masking curves?

Thank you in advance

Sanja