FREQUENCY RESPONSE @0dB [u]
| 20Hz | -0.37 | -0.37 | |
| 31Hz | -0.25 | -0.25 | |
| 40Hz | 0.00 | 0.00 | |
| 50Hz | -0.12 | -0.12 | |
| 100Hz | 0.00 | 0.00 | |
| 315Hz | 0.00 | 0.00 | |
| 1k0 | 0.00 | 0.00 | |
| 6k3 | 0.00 | 0.00 | |
| 10k0 | 0.00 | 0.00 | |
| 12k5 | 0.00 | 0.00 | |
| 14k0 | -0.12 | -0.12 | |
| 16k0 | -0.25 | -0.25 | |
| 20k0 | -20.62 | -20.50 | |
| 25k0 | -22.00 | -22.00 | |
TEST LEVEL OUT 1kHz [t]
NOISE ITU-468 Q-Pk REL [n]
DIST RES 1kHz WTD REL [r]/q
| -20dB | -42.62 | -42.22 | |
| 0dB | -60.62 | -60.82 | |
| +8dB | -64.69 | -64.55 | |
| +12dB | -66.25 | -66.01 | |
| +15dB | -67.67 | -67.59 | |
| +18dB | -65.52 | -65.67 | |
PHASE R-L [z]
Roll-off above 16kHz is almost the same as for the 128ks/s test, and is a feature of the MP3 encoding, since tests using WAV files give a flat response to 20kHz out of the PUC. Artifacts on music will be reduced, at higher bit rate, but in practice 128kb/s sounds just about indistinguishable from the original, and is the best compromise to use. |
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