Clean Audio for TV broadcast: An Object-Based Approach for Hearing-Impaired Viewers - April 2015
Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
Sound Board: Food for Thought, Aesthetics in Orchestra Recording - April 2015
A New Total-Difference Frequency-Distortion (TDFD) Meter Offering 135-dB Range and without Critical Filters
A TDFD meter which requires neither critical filter stages nor test signals, either from external sources or of high purity, is in beta production. Quadrature synchronous detectors, simple passive filters, and PLL-synthesizers give a measurement dynamic range of >135-dB or 0.15 ppm. The microprocessor displays TDFD, calculates THD, and shows odd- and even-order distortion fractions. The possibilities exist of locking-on to an external reference, allowing measurement of compact disc players, or of changing the test signal frequency by shifting the master reference. Large shifts will require canyon filters instead of notches.
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.