NFS 31 990 : 88 FD
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
SOUND SYSTEM EQUIPMENT - THE OBJECTIVE RATING OF SPEECH INTELLIGIBILITY IN AUDITORIA BY THE 'RASTI' METHOD
08-01-1998
01-12-2013
Gives an objective method for rating the quality of speech transmission with respect to intelligibility. Is intended for rating speech transmission in auditoria with or without sound systems. This publication has the status of a report
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