Set Distance And Delay - Audison bit one Advanced Manual

8. SET DISTANCE AND DELAY

The Bit One provides the ability to set a digital time delay
for each channel of the system.
The time delay allows to virtually move the speakers
emission point it is applied to, so that their time distance
compared to the emission point is the same. This way
the listener will virtually be at the center in respect to the
speakers.
How to perform time delays:
- choose the listening point to optimize.
Ex.:
driver or passenger;
- place in the pre-set listening position, at ear level, a
steady point as reference.
microphone;
- measure the exact distance between the reference
point and the speakers.
Ex.:
microphone / left woofer = 90 cm, microphone / left
Mid-Hi's = 105 cm, etc. ;
- enter into the Set Distance (8) box of the Filter
Settings function of the corresponding speaker the
distance in relation to each measured speaker;
- repeat these operations for each system channel.
The Bit One will automatically calcolate in milliseconds
the time delay to apply to each system channel.
The calculation is made taking into consideration the
furthest speaker.
Ex.:
if the furthest speaker is the Subwoofer (164 cm)
the processor will add to the other speakers as much
delay as to virtually move their distance up to 164 cm.
So we recommend you first enter all the distances
into the system before checking the listening acoustic
effect and do not amaze if no delay will be applied to
the Subwoofer.
WARNING:
the digital delay does not rectify possible
errors during the acoustic phase of the system it is
applied to. Therefore, enter the distances only after
performing the system proper adjustment and its
consequent "phase tuning".
WARNING:
if, once you have set the distances
comparing to the "driver" listening point you click on
the "passenger" listening point, the Bit One won't re-
calculate the delays compared to the new reference
point because the buttons available in the SELECT A
CHANNEL diagram are merely descriptive and their
only purpose is to remind you that you have set the
delays for that listening point!
Once the distances have been properly set you can
perform a final tuning, adding milliseconds to or removing
them from the delay the Bit One calculated, through the
FINE SET box of the DELAY function.
Ex:
the tip of a the pole of a
30 30
ADVANCED MANUAL / Bit One ADVANCED MANUAL / Bit One
83 cm
105 cm 127 cm
90 cm 132 cm
78 cm 116 cm
164 cm
+2.42 ms
+1.75 ms
105 cm
+2.17 ms
90 cm
78 cm
+2.50 ms
Virtual distances generated from the
introduction of time delays
Real distances
measured in
relation to the
listening point
+1.08 ms
127 cm
+0.92 ms
132 cm
116 cm
+1.42 ms
164 cm
+0.00 ms