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Digital signal processor, Before operating the auto ta and eq function, Carrying out auto ta and eq – Pioneer AVH-P5700DVD User Manual

Page 84

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Before operating the auto TA

and EQ function

! Carry out auto TA and EQ in as quiet a

place as possible, with the car engine and

air conditioning switched off. Also cut

power to car phones or portable telephones

in the car, or remove them from the car be-

fore carrying out auto TA and EQ. Sounds

other than the measurement tone (sur-

rounding sounds, engine sound, tele-

phones ringing etc.) may prevent correct

measurement of the car interior acoustic

characteristics.

! Be sure to carry out auto TA and EQ using

the supplied microphone. Using another

microphone may prevent measurement, or

result in incorrect measurement of the car

interior acoustic characteristics.

! When front speaker is not connected, auto

TA and EQ cannot be carried out.

! When this unit is connected to a power

amp with input level control, auto TA and

EQ may not be possible if you lower power

amp input level. Set the power amps input

level to the standard position.

! When this unit is connected to a power

amp with an LPF, turn off the LPF on the

power amp before carrying out auto TA and

EQ. In addition, the cut-off frequency for

built-in LPF of an active subwoofer should

be set to the highest frequency.

! The time alignment value calculated by

auto TA and EQ may differ from the actual

distance in the following circumstances.

However, the distance has been calculated

by computer to be the optimum delay to

give accurate results for the circum-

stances, so please continue to use this

value.

When the reflected sound within a vehi-

cle is strong and delays occur.

When delays occur for low sounds due

to the influence of the LPF on active

subwoofers or external amps.

! Auto TA and EQ changes the audio settings

as below:

The fader/balance settings return to the

center position. (Refer to page 76.)

The equalizer curve switches to FLAT.

(Refer to page 81.)

It will be adjusted automatically to high

pass filter setting for front, center and

rear speaker.

! If you carry out auto TA and EQ when a pre-

vious setting of this already exists, the set-

ting will be replaced.

Carrying out auto TA and EQ

1 Stop the car in a place that is as quiet

as possible, close all doors, windows and

the sun roof, and then turn the engine off.

If the engine is left running, engine noise may

prevent correct auto TA and EQ.

2 Fix the supplied microphone in the cen-

ter of the headrest of the drivers seat, fa-

cingforward, usingthe belt (sold

separately).

The auto TA and EQ may differ depending on

where you place the microphone. If desired,

place the microphone on the front passenger

seat to carry out auto TA and EQ.

3 Turn the ignition switch to ON or ACC.

If the cars air conditioner or heater is turned

on, turn it off. Noise from the fan in the air

conditioner or heater may prevent correct auto

TA and EQ.

Digital Signal Processor

En

84

Section

17