ramsey benjamin (4 Ergebnisse)

Zustand: New. In.

Zustand: New. KlappentextrnrnThis thesis investigates the quality of audio generated by a G.711 codec and transmission over an IEEE 802.11n draft 2.0 wireless local are network (WLAN). Decline in audio quality due to additional calls or by securing the WLAN w.

Taschenbuch. Zustand: Neu. Neuware - This thesis investigates the quality of audio generated by a G.711 codec and transmission over an IEEE 802.11n draft 2.0 wireless local are network (WLAN). Decline in audio quality due to additional calls or by securing the WLAN with Internet Protocol Security (IPsec) is quantified. Audio quality over an IEEE 802.11n draft 2.0 WLAN is also compared to that of IEEE 802.11b and IEEE 802.11g WLANs under the same conditions. Audio quality is evaluated as Mean Opinion Score (MOS), calculated as the average subjective audio quality score given for each WLAN configuration. Results suggest that audio quality over an IEEE 802.11n draft 2.0 WLAN is not higher than over an IEEE 802.11b WLAN when up to 10 simultaneous G.711 calls occur. A linear regression of the subjective scores also suggest that an IEEE 802.11n draft 2.0 WLAN can sustain an MOS greater than 3.0 (fair quality) for up to 75 simultaneous G.711 calls secured with WPA2, or up to 40 calls secured with both WPA2 and transport mode IPsec. The data strongly suggest that toll quality audio (MOS gt; 4.0) is not practical over WPA2-secured IEEE 802.11 WLANs.

69 pp.; 28 x 21.5 cm.; staple bound; black-and-white; edition size unknown; unsigned and unnumbered; offset-printed; Summer 1980 issue of High Performance, The Performance Art Quarterly, edited by Linda Frye Burnham. Contents include: "WCA Conference in Louisiana," by Suzanne Lacy; "Public Arts International/Free Speech," by Stephen Forsling; "Per/for/mance, American Performance Festival in Italy: Chris Burden, Laurie Anderson, Paul McCarthy, Julia Heyward, Disband, Richard Newton;" "Artist's Chronicle: John Sheridan, Julie Wallace Keller, Valerie Bechtol, Mark Bloch, Anne Mavor, Joshua Abbey, M. Staff Brandl, Roar Schaad, Ramsey Najm, The Waitresses, Richard Turner, Denise Chanel Vallon, Paul Best, Jeffrey Mark Burdett, Nancy Evans, Pam Minor, Bob Davis, Renata Petroni, Jeanne Quinn, Daniel Lerner, Darryl Turner, Barbara Margolies, Claire Fergusson, Nancy Riegelman, Rod Force;" "Cafe E*pit'o*me: Director's Notes," by Jerry Benjamin and "Incomplete Requiem for W.C. Fields," by Al Hansen. Front Cover: Per/for/mance festival posters, Florence. Back Cover: Paul McCarthy. Very Good / Fine. Light rubbing of coves and creasing of verso. Covers and contents clean and unmarked.