AUDIO SETUP

 

Audio 3/7

 

 

Audio

Bitstream/2 Ch.

Down-sample

Max 48K

Pro Logic

Off

Audio Delay

Normal

This section allows you to configure the type of analogue and digital audio outputs. In particular, the digital output type needs to be set correctly if you are using an external audio decoder, receiver or D-A converter.

AUDIO

Two different types of digital output are supported: ‘Bitstream’ and ‘Stereo PCM’.

Bitstream

The Bitstream setting supports the following audio

 

standards:

 

2 channel PCM (on CDs or DVDs)

 

Dolby Digital

 

MPEG multi channel

 

DTS multi channel

 

Use the Bitstream setting if you have an external

 

decoder that supports Dolby Digital.

 

 

Stereo PCM

When the “Stereo PCM” digital output is selected, all

 

audio material played is down-mixed to stereo and

 

output as stereo PCM. Use this setting if you have an

 

external D-A converter that supports only 2-channel

 

PCM.

 

 

Since the digital and analogue outputs are closely related, the analogue audio output reflects the digital output type selected.

The options available are as follows:

Bitstream +

The digital output is “Bitstream” (as described above).

6 Ch.

The analogue audio will comprise up to six channels of

 

output, depending on the source material, the speaker

 

configuration (see the “Speaker Setup” section) and the

 

“Pro Logic” setting (see below).

 

 

Bitstream +

The digital output is “Bitstream” (as described above).

2 Ch.

The analogue audio will comprise a 2-channel stereo

 

down-mix of the source material.

 

 

PCM + 2 Ch.

The digital output is “Stereo PCM” (as described above).

 

The analogue audio will comprise a 2-channel stereo

 

down-mix of the source material.

 

 

PRO LOGIC

This controls ‘Pro Logic’ processing of the material. Pro Logic decoding creates a four-channel surround output from sources that are encoded in Dolby Surround format. It is relevant only when two-channel source material is being played.

Off

No Pro Logic processing is performed.

 

 

On

Pro Logic processing is performed on all appropriate two-

 

channel material.

 

 

Auto

Pro Logic processing is performed when the audio track on

 

the DVD is indicated as being Dolby Surround encoded.

 

 

Note the following points:

If two-channel output is selected via the “Audio” item, no Pro

 

Logic decoding will ever be performed.

 

If the player is configured to have only two speakers connected

 

 

to it (described in the next section), then no Pro Logic decoding

 

 

will be performed.

English

MP3 and WMA files, together with DVD-audio discs and any

 

96kHz (or above) material, are not suitable for Pro Logic decoding and will never be processed.

AUDIO DELAY

Because the progressive scan processing takes several pictures (frames) to produce a higher quality output, the audio signal needs to be delayed so that video and audio remain synchronized.

The audio delay needs to be set according to whether you are using standard outputs, or the progressive output from your DV27A.

Normal

Choose this setting if you are using one of the standard

 

video outputs.

 

 

Progressive

Choose this setting to watch video via the progressive video

 

output of the DV27A.

 

 

DOWN-SAMPLE

This needs to be set correctly if you are using an external audio decoder, receiver or D-A converter.

Max 96K

Choose this option if your external audio decoder

 

is able to process digital audio with a sample rate of

 

up to 96KHz, or if you are not using the digital audio

 

outputs.This is the maximum sample rate present on

 

DVD-video discs.

 

 

Max 48K

Choose this option if your external audio decoder is

 

unable to process digital audio with a sample rate of

 

up to 96KHz.

 

 

NOTE: This setting is relevant only to the output from DVD-video discs.

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Arcam DV27A manual Audio Setup, PRO Logic, Audio Delay, Down-Sample