SPL Phonitor 2730, Руководство пользователя

Страница: 29 / 32

Phonitor 29
Measurements
Frequency Response Input/Headphone Output, Left and Right Channel
Measuring output and input 600 Ohm, Volume control Phonitor 0 dB:
‹10 Hz to ›200 kHz (-3dB).
The large Frequency response range excludes that the frequency spec-
trum is limited at any point. Transmission of formants and octaves of an
instrument’s sounds can not be narrowed.
Phase Response Input vs. Output, Left and Right Channel
Measuring output and input 600 Ohm, Volume control Phonitor 0 dB.
This measurement shows the minimum deviation of phase in the upper
frequency range. Phase response describes the time difference be-
tween input and output signal – the less, the better. The extremely
tight phase response up to 50 kHz excludes any audible effects.
Audio Precision 05/27/08 09:50:42 Phonitor Model 2730
-3
+3
-2
-1
+0
+1
+2
d
B
u
10 200k 20 50 100 200 500 1k 2k 5k 10k 20k 50k
Hz
Audio Precision 04/15/08 08:34:58 Phonitor Phase/FC
-10
+10
-8
-6
-4
-2
+0
+2
+4
+6
+8
d
B
u
-150
+150
-100
-50
+0
+50
+100
d
e
g
20 100k 50 100 200 500 1k 2k 5k 10k 20k 50k
Hz