On the Measurement of Rumble in Phonograph Reproduction

Bauer BB. On the Measurement of Rumble in Phonograph Reproduction. In: AES Convention 31. Audio Engineering Society; 1966. Paper 503. Available from: https://aes.org/publications/elibrary-page/?id=938

@inproceedings{Bauer1966_938,
  author = {Bauer, Benjamin B.},
  title = {{On the Measurement of Rumble in Phonograph Reproduction}},
  booktitle = {AES Convention 31},
  note = {Paper 503},
  year = {1966},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=938}
}

TY  - CPAPER
TI  - On the Measurement of Rumble in Phonograph Reproduction
AU  - Bauer, Benjamin B.
T2  - AES Convention 31
M1  - Paper 503
PY  - 1966
DA  - 1966/10/06
UR  - https://aes.org/publications/elibrary-page/?id=938
PB  - Audio Engineering Society
LA  - en
AB  - In this paper the nature of turntable rumble is analyzed, with the object of evolving a method for rating the performance quality of turntables with respect to rumble. Spectral distribution of rumble of a typical turntable is shown, identifying the effect of resonances of the pickup arm. Audibility characteristics of rumble are reviewed, in the light of the equal loudness contour characteristics of the ear and the typical noise in the room. A weighting network of 6 dB per octave below 500 Hz with 12 dB attenuation above 500 Hz is suggested. Several possible methods of converting the spectral response of rumble into a number corresponding to a relative loudness level are considered. It is concluded that probably the best method, from the practical standpoint, is the measurement of the rms voltage level of rumble through the weighting network, relative to the level of 1000 Hz 5 cm/sec rms standard tone, (without the network). The resulting number, in dB is called the Relative Tumble Loudness Level (RRLL).
ER  -