Clean Audio for TV broadcast: An Object-Based Approach for Hearing-Impaired Viewers - April 2015
Sound Board: Food for Thought, Aesthetics in Orchestra Recording - April 2015
Practical Considerations on Overload-Distortion of Analog-to-Digital Converters
Excessive program levels can cause strange distortions during digitization. While the clipping of an analog audio signal produces a well-known harmonic distortion, the overload of the ADC results in the appearance of non-harmonic components. The human sense of aliasing effect is usually more dubious than the sense of harmonic distortion, so spurious sounds are more likely to get into a digital recording because of an overload, than in an anlog one. It is especially dangerous, when pre-emphasis is applied prior to the A/D conversion. Theoretical and experimental investigations of these phenomena show that this problem can be reduced significantly by means of a very simple circuit.
This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.