Subject: [AUDITORY] MUSHRA test with open reference; and then without open reference From: #ARIJIT BISWAS# <000003292f44871c-dmarc-request@xxxxxxxx> Date: Tue, 20 Aug 2024 07:14:58 +0000--_000_SEZPR01MB46793C30781B436CED62100C908D2SEZPR01MB4679apcp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Dear all: Is there any research on how subjective ratings in a MUSHRA test might be a= ffected if the same systems (i.e., hidden reference, anchors, codecs under = test) are re-evaluated without the ability to compare them against an open = reference? If no such studies/papers exist, can we make any educated guesses about the= potential outcomes? I imagine that, in the absence of a reference, the task for the subjects wo= uld become more difficult. Any other guesses? Thank you. Best regards, Arijit **Disclaimer** The sender of this email does not represent Nanyang Technolo= gical University and this email does not express the views or opinions of t= he University. --_000_SEZPR01MB46793C30781B436CED62100C908D2SEZPR01MB4679apcp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Diso-8859-= 1"> <style type=3D"text/css" style=3D"display:none;"> P {margin-top:0;margin-bo= ttom:0;} </style> </head> <body dir=3D"ltr"> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> Dear all:</div> <div style=3D"font-family: Verdana, Geneva, sans-serif; font-size: 10pt; co= lor: rgb(0, 0, 0);"> <br> </div> <div style=3D"font-family: Verdana, Geneva, sans-serif; font-size: 10pt; co= lor: rgb(0, 0, 0);"> Is there any research on how subjective ratings in a MUSHRA test might be a= ffected if the same systems (i.e., hidden reference, anchors, codecs under = test) are re-evaluated without the ability to compare them against an open = reference?</div> <div style=3D"font-family: Verdana, Geneva, sans-serif; font-size: 10pt; co= lor: rgb(0, 0, 0);"> <br> </div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> If no such studies/papers exist, can we make any educated guesses about the= potential outcomes?</div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> I imagine that, in the absence of a reference, the task for the subjects wo= uld become more difficult. </div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> Any other guesses? </div> <div style=3D"font-family: Verdana, Geneva, sans-serif; font-size: 10pt; co= lor: rgb(0, 0, 0);"> <br> </div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> Thank you.</div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> <br> </div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> Best regards,</div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 10pt; color: rgb(0, 0, 0);"> Arijit</div> <div class=3D"elementToProof" style=3D"font-family: Verdana, Geneva, sans-s= erif; font-size: 11pt; color: rgb(0, 0, 0);"> <br> </div> <div id=3D"Signature"> <div align=3D"left" style=3D"margin: 0cm 0cm 0pt; font-family: Verdana; fon= t-size: 7.5pt; color: gray;"> <br> </div> <div align=3D"left" style=3D"margin: 0cm 0cm 0pt;"></div> </div> **Disclaimer** The sender of this email does not represent Nanyang Technolo= gical University and this email does not express the views or opinions of t= he University. </body> </html> --_000_SEZPR01MB46793C30781B436CED62100C908D2SEZPR01MB4679apcp_--