Arcam DV29 manual Down-sample, Compression, Pro Logic, Dimension, Centre Width, Anorama Mode

Down-sample

This needs to be set correctly if you are using an external audio decoder, receiver or D-A converter connected to the co-axial or optical digital audio output.

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. This is the normal setting for this menu item.

Note that this setting is relevant only to the output from DVD-video discs.

Compression

Allows compression of the audio stream to be turned on or off, where ‘On’ is intended for ‘late night’ listening when large volume changes are not desirable.

Turning compression on increases the volume of the quiet passages and decreases the volume of the louder passages, i.e., the total dynamic range of the audio is reduced. Normally, however, this item is set to “Off”, to disable compression.

This menu option affects both the analogue and the HDMI outputs (although note that the HDMI output is affected only when carrying multi-channel uncompressed audio, not otherwise). The co-axial and optical digital audio outputs are never affected by this menu setting.

Compression is available only on Dolby Digital recordings.

Pro Logic II

Dolby Pro Logic II decoding is designed to produce a 5-channel analogue output from two-channel source material. This item can be changed only if the ‘Audio’ menu item (described above) is set to ‘Bitstream/6 Ch’.

Set this item to one of the following. Due to the different recording methods used for movies and music, it is recommended that the correct decoding mode for your source material is used to obtain the best results.

Off		No Pro Logic decoding is performed.
	PL	Dolby Pro Logic decoding is performed. Dolby Pro Logic decoding is a legacy mode,
		and we recommend using one of the Pro Logic II decoding options, instead.

Pro Logic II decoding should be enabled only if the analogue audio outputs are being used. If co-axial/optical digital audio or HDMI are in use, set this menu item to “Off”.

Movie	Movie mode should be used with material marked as ‘Dolby Surround’ encoded.
Music	Music mode is for use with any stereo music recording. As the optimum decoding
	method varies according to the recording, Music mode allows user adjustment of
	the processing characteristics; information about adjusting the Music mode by
	using ‘Dimension’, ‘Centre Width’ and ‘Panorama’ controls can be found below.
Matrix	The Matrix mode is the same as the Music mode except that the directional
	enhancement logic is turned off. Matrix mode may be used to enhance mono
	signal by making them seem ‘larger’.

Dimension

(This setting can be adjusted only when Dolby Pro Logic II Music mode is selected.)

‘Dimension’ allows the user gradually to adjust the soundfield either towards the front or towards the rear. If a recording is too spacious or strong from the surrounds, it can be adjusted ‘forward’ to get a better balance. Likewise, if a stereo recording is somewhat too ‘narrow’ sounding, it can be adjusted toward the rear to get a more enveloping, immersive result. We recommend ‘Dimension’ is set to 0 for normal use.

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Centre Width

his setting can be adjusted only when Dolby Pro Logic II Music ode is selected.)

ith Pro Logic II decoding, dominant centre signals come only from e centre speaker. If no centre speaker is present, the decoder splits e centre signal equally to the left and right speakers to create a hantom’ centre image. The Centre Width control allows variable djustment of the centre image so it may be heard only from the entre speaker; only from the left/right speakers as a phantom age; or from all three front speakers to varying degrees. We commend ‘Centre Width’ is set to 3 for normal use.

anorama Mode

his setting can be adjusted only when Dolby Pro Logic II Music ode is selected.)

xtends the front centre image to include the surround speakers for

an exciting ‘wrap-around’ effect with side wall imaging.

Display	Centre spreading
	effect

0No centre spreading

120.8°

228°

336°

454°

562°

669.8°

7Phantom centre

The ‘Centre Width’ setting

for Dolby Pro Logic II

Music Mode