Re: [MP3 ENCODER] lame 3.87 encode-decode roundtrip

[Frank Klemm]

Some remarks about the ATHformula.

The result are differing really a lot from my experiments.
The difference is 10 dB and more at >=12 kHz.

For very young people the difference may be larger.

Examples:
Frequency  Formula  Experiment  Difference
[kHz]      [dB]     [dB]        [dB]
 1           3.36    2.72        0.6
 2          -0.25   -1.40        1.1
 3          -4.56   -4.64        0.1
 4          -3.38   -5.50        2.1
 5           0.48   -2.27        2.8
 6           2.08    3.89       -1.9
 7           3.16    8.13       -5.0
 8           4.78   11.27       -6.5
 9           7.18   13.23       -6.0
10          10.57   14.39       -3.8
11          15.17   12.85        2.3
12          21.23   11.49       10
13          29.02   13.24       16
14          38.85   18.13       21
15          51.04   23.57       28
16          65.93   35.63       30
17          83.89   51.24       32
18         105.33   60.13       45

Binaural, Sennheiser HD 560, diffuse field.

-- 
Frank Klemm

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