The case of the missing 6 dB.

@article{Rudmose1982TheCO,
  title={The case of the missing 6 dB.},
  author={W. Rudmose},
  journal={The Journal of the Acoustical Society of America},
  year={1982},
  volume={71 3},
  pages={650-9}
}
  • W. Rudmose
  • Published 1982 in The Journal of the Acoustical Society of America
In 1933 data were reported which indicated that thresholds of hearing for frequencies apparently depended upon whether the source was an earphone (MAP) or a loudspeaker (MAF). A decade or so later the same type of discrepancy appeared when loudness balances were made at 100 Hz between an earphone source and a loudspeaker source. In both cases approximately 6 dB more sound pressure level at the eardrum was required when the earphone was the source than when the loudspeaker was the source. Later… CONTINUE READING

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