Arcam DV135 Audio set-up, Digital audio output, DVD sample rate, Audio compression, VCD mode

DV135

E-14

Audio set-up

This section allows you to configure the analogue, digital and HDMI 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.

Digital audio output

This setting configures the digital audio output – coaxial, optical and

HDMI.

S/PDIF	When the ‘Stereo PCM’ digital output is selected, all audio material played is
stereo PCM	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.
S/PDIF	The Bitstream setting supports the following audio standards:
bitstream	< 2 channel PCM (on CDs or DVDs)
	< Dolby Digital
	< MPEG multi channel
	< DTS multi channel
	Use this setting if you have a receiver/decoder that supports Dolby Digital.
HDMI (Auto)	Select this item if you are using an HDMI connection between your DV135 and
	your receiver or display device.
	The audio type will be changed automatically to work with the device attached to
	your player.
	Do not select this item if your HDMI display device or surround-sound
	receiver cannot decode audio over HDMI, or if you are connecting to a
	DVI device (since a DVI link cannot carry audio) – choose one of the
	other settings instead.

DVD sample rate

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

Max 96KHz	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 48KHz	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.

Audio compression

This option 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 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 multi-channel uncompressed audio is requested by the receiver, 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.

VCD mode

Some VCD discs are produced with a dual-mono soundtrack. This means that the left audio channel carries one language, the right another. In this case it can be useful to listen to just one of the channels.

Stereo	The default setting. Choose this option to play the VCD with both channels
	audible.
Left channel only	Choose this option to play the VCD with only the left channel audible. The audio
	from the left channel will be routed to both the left and right speakers.
Right channel	Choose this option to play the VCD with only the right channel audible. The audio
only	from the right channel will be routed to both the left and right speakers.

This setting applies only to VCD discs.

Video post-processing (lip-sync.)

Delay for NTSC (ms)/Delay for PAL (ms)

Modern displays and video scalers often employ digital video processing that can introduce a significant video delay. The ‘Delay’ menu items allow correction of this effect by delaying the audio soundtrack up to 150 milliseconds. The amount of correction required in a given system is best determined by experimentation.

<If the interlaced video outputs of the DV135 are in use and the display is converting the signal to progressive scan then we recommend a delay of 50–80ms, depending upon the display.

<If the progressive video output of the DV135 is in use, the player corrects automatically for its own processing delays and it is unlikely that additional delay will be necessary. Therefore, start