The Institute for Music Physiology and Musicians' Medicine. - Eckart Altenmüller; Reinhard Kopiez; Oliver Grewe; Sabine Schneider; Susann Eschrich; Frederik Nagel; Hans-Christian Jabusch (Cogn. Process., 2007)

A harmonic bandwidth extension method for audio codecs. - Frederik Nagel; Sascha Disch (ICASSP, 2009)

A continuous modulated single sideband bandwidth extension. - Frederik Nagel; Sascha Disch; Stephan Wilde (ICASSP, 2010)

A MDCT based harmonic spectral bandwidth extension method. - Christian Neukam; Frederik Nagel; Gerald Schuller; Michael Schnabel (ICASSP, 2013)