* Olive/Welti experimentally determined car-audio target — literature-derived beta preset
* Source: Floyd E. Toole, JAES 63(7/8), 2015, Fig. 15
* DOI: 10.17743/jaes.2015.0064
* Underlying study: Sean E. Olive and Todd Welti, AES 36th Automotive Conference, 2009, paper 7
* Method: vector trace digitized on the logarithmic frequency/linear dB axes, sampled at standard third-octave frequencies, normalized to 0 dB at 1 kHz, rounded to 0.01 dB
* Version: olive-welti-car-literature-v1
* Not an official Harman Kardon or OEM production target; physical RTA validation remains required
20	8.86
25	8.85
31.5	8.81
40	8.61
50	8.14
63	7.16
80	5.64
100	3.96
125	2.39
160	1.20
200	0.65
250	0.46
315	0.35
400	0.26
500	0.19
630	0.13
800	0.07
1000	0.00
1250	-0.10
1600	-0.18
2000	-0.27
2500	-0.37
3150	-0.55
4000	-0.87
5000	-1.11
6300	-1.37
8000	-1.69
10000	-2.19
12500	-2.70
16000	-3.67
20000	-4.77