Channel Delays Page - Arcam AVR100 Manuel

Channel delays page

For best results in a surround sound system, the sound from
all loudspeakers should reach the listener at the same time. To
help achieve this the AVR100 can add slight delays to certain
channels when in Dolby Digital or Dolby Pro Logic modes.
When playing a Dolby Digital source you can set a delay for
the centre channel of between 0 and 5ms and a delay for the
rear channels of between 0 and 15ms.
To calculate these delay times, fi rst measure (or estimate) the
distances from the listening position to the front, centre and
rear speakers. Keep a record of these distances by entering
them under the heading 'Your measure' in the table provided.
The centre channel delay is calculated by subtracting the centre
channel distance from the front left (or right) distance. The
difference represents the
The rear channels' delay time is calculated by subtracting the
rear left (or right) distance from the front left (or right) distance.
The difference represents the
rear loudspeakers are further from the listening position than
the front loudspeakers, you should set this delay to
If you have made your measurements in feet, one foot
approximates to one millisecond (1ms) delay. If you have made
your measurements in metres, one metre approximates to three
milliseconds (3ms) delay.
When playing a Dolby Pro Logic source you can set a delay
for the rear channels between 15 and 30ms. There is no delay
setting for the centre channel.
The rear channel delay in Dolby Pro Logic is calculated by
adding 15ms to the rear channel delay calculated for Dolby
Digital. In our example, this is 15ms + 6ms = 21ms.
NOTE: It is not necessary to adjust delay times for a DTS
AVR100
(Digital Theater Systems) source.
8
delay time.
CENTRE
delay time. Note that if your
REAR
.
0ms
SETUP
1 INPUT SETTINGS
2 CHANNEL BALANCE
3 CHANNEL DELAYS
4 SPEAKER SETTINGS
5 EXIT
CHANNEL DELAYS
CENTER 3ms
REAR 6ms
DO NOT SAVE AND EXIT
SAVE AND EXIT
front
centre
left
e.g. 4m e.g. 3m
(12ft) (9ft)
e.g. 2m
(6ft)
rear
left
Distance to listening position
Front left or right 12ft or 4m
Centre 9ft or 3m
Rear left or right 6ft or 2m
Difference
CENTRE delay (12 – 9ft) or (4 – 3m)
= 3ft or 1m
REAR delay (12 – 6ft) or (4 – 2m)
= 6ft or 2m
CHANNEL DELAYS
CENTER N/A
REAR 21ms
DO NOT SAVE AND EXIT
SAVE AND EXIT
CHANNEL DELAYS
CENTER 0mS
REAR 0mS
DO NOT SAVE AND EXIT
SAVE AND EXIT
front
right
rear
right
e.g. Your measure
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e.g. Delay (ms)
3 milliseconds
6 milliseconds