Perceptual Effects of Dynamic Range Compression in Popular Music Recordings - January 2014
Accurate Calculation of Radiation and Diffraction from Loudspeaker Enclosures at Low Frequency - June 2013
New Measurement Techniques for Portable Listening Devices: Technical Report - October 2013
Low-Frequency Response Calibration of a Multitrack Magnetic Tape Recording and Reproducing System
Several practical problems make the use of the usual reproducer calibration test tape unsatisfactory below 1000 Hz at a tape speed of 380 mm/s. First, the low frequency equalization standards below 50 Hz are often not followed in practice. Second, there are many different multitrack formats, and this makes a true multitrack reproducer calibration tape commercially infeasible, but although one can calculate a fringing compensation, it is not accurate at the lowest frequencies. Third, the reproducer response inherently undulates, but there are not enough test frequencies to characterize that response. At long wavelengths (low frequencies) the recorded flux is directly proportional to the recording current. Therefore system calibration is best performed by the following method: standardize the recording response (recording head current versus frequency); use recording and reproducing heads of the same core width throughout the system; record a slowly swept-frequency test signal; and adjust the reproducer low-frequency equalizer for flattest overall response.
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.