NMR Measurements on Multiple Generations Audio Coding
With the advent of low bit-rate coding in studio and consumer applications, multiple generations (tandem) coding becomes reality. It is reported that depending on the algorithms and bit rates employed, the final sound quality may decrease significantly. The noise-to-mask ratio (NMR) perceptual measurement is capable of evaluating the margin toward audibility. The results of numerous measurements on typical tandem combinations will be presented, and the consequences on multiple generations coding will be discussed.
Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.