Multichannel source modes, Decoding modes

Multichannel source modes

Digital multichannel source material is normally provided as ‘5.1 audio’. The ‘5.1 channels’ comprise of: left, centre and right front speakers, two surround speakers and a low frequency effects (LFE) channel. Since the LFE channel is not a full range channel, it is referred to as ‘.1’.

Surround systems decode and reproduce the 5.1 channels directly. Dolby Digital EX and DTS-ES matrix enhanced decoding systems create one extra rear channel from information buried in the two surround signals of the 5.1 source. These EX and ES enhanced systems are sometimes referred to as ‘6.1’ systems. This extra surround back channel is normally reproduced through two separate loudspeakers, creating a ‘7.1’ system.

DTS-ES discrete is a true ‘6.1’ source, with six discretely encoded channels, plus the ‘.1’ LFE channel.

Dolby Digital Plus, Dolby True-HD and DTS-HD are high-resolution surround formats found on Blu-ray and HD-DVD discs

Decoding modes

The modes given in the following table are available for multichannel digital sources.

Special modes such as DTS-ES 6.1 discrete, Dolby Digital Plus, Dolby Tru-HD and DTS-HD are only available from the correct source material.

High resolution audio sources

Dolby True-HD	Provides up to 7.1 full channel at 96kHz, 24bit resolution, with potentially no
	losses in the compression process. Data rates can be up to 18Mbps.
Dolby Digital Plus	Provides up to 7.1 discrete channels of audio with less compression than
	traditional Dolby Digital encoding. Data rates can be up to 6Mbps.
DTS-HD Master Audio	Provides up to 7.1 full channel at 96kHz, 24bit resolution, with potentially no
	losses in the compression process. Data rates can be up to 24.5Mbps.
For Dolby Digital sources
Dolby Digital 5.1	The most commonly used sound format for DVD video, and is also the
	standard for US television. Dolby Digital 5.1 sources deliver sound with five
	discrete full-range channels; left, centre, right, surround left, surround right,
	plus a low frequency effects (LFE) channel.
Dolby Digital 5.1 Stereo	Provides a stereo downmix of the source material for use with headphones.
Downmix
For DTS sources
DTS 5.1	Less common than the Dolby Digital format, but generally recognised within
	the audio industry as being of superior sound quality. DTS 5.1 delivers
	surround sound with five full range channels plus an LFE channel.
DTS 5.1 Stereo Downmix	Provides a stereo downmix of the source material for use with headphones.
DTS-ES 6.1 Matrix	This is a 6.1 channel format based on DTS 5.1. It has the sixth channel matrix
	encoded into the surround left and surround right channels. The sixth channel
	is a surround centre channel and is directed to the surround back left and
	surround back right speakers.
DTS-ES 6.1 Discrete	This is a true discrete 6.1 channel sound format (unlike DTS-ES Matrix).
	DTS-ES discrete mode operates only on sources with DTS-ES 6.1 discrete
	audio encoding.
DTS96/24	Provides up to 5.1 channels of audio at 96kHz, 24bit resolution for superior
	sound quality compared to standard DTS 5.1

Post-processing

Dolby Digital EX decoding can be applied to any source if one or two surround speakers are present. Pro Logic IIx decoding can be applied to any source if two surround back speakers are present.

Dolby Digital EX	This is an extension to Dolby Digital decoding that provides a 6-channel output
	from a 5-channel input. The extra channel is the centre-surround channel (for
	which the two surround back speakers are used), and is derived from the left
	and right surround channel information. This decode mode should be used
	only when the source material is ‘Surround EX’ encoded (which is normally
	indicated on the disc packaging and should be detected automatically by the
	AVR500/AVR600/AV888), but may be used at other times if desired.
Pro Logic IIx Movie	This mode is used to derive information for the individual surround back
	channels from the surround channels, using the Pro Logic IIx Movie decoder.
Pro Logic IIx Music	This mode is used to derive information for the individual surround back
	channels from the surround channels, using the Pro Logic IIx Music decoder.
	The controls for adjusting Pro Logic IIx Music in ‘General Setup’ can be used in
	this mode.

English

E-47

AV888, AVR500, AVR600 specifications

The Arcam AVR600 is a high-performance AV receiver that is designed for audiophiles and home cinema enthusiasts who seek a premium audio and video experience. This receiver stands out with its array of features and technologies that elevate sound quality and user experience.

At the heart of the AVR600 is its high-fidelity amplification system. The receiver is equipped with a robust 7-channel amplification setup, delivering a total output of 120 watts per channel into 8 ohms. This power enables the AVR600 to reproduce dynamic audio with precision, whether it be for movies, music, or gaming. The class G amplifier design offers exceptional efficiency and reduces distortion, ensuring that sound remains clean and focused even at higher volumes.

The AVR600 boasts extensive connectivity options to accommodate various audio and video sources. It features multiple HDMI inputs and outputs supporting 3D video and 4K scaling, providing flexibility for connecting modern devices. The unit also includes analog and digital inputs, a dedicated phono input for vinyl enthusiasts, and support for multi-room audio setups. With its built-in Bluetooth and network streaming capabilities, users can easily access high-resolution audio files from their digital libraries or popular streaming services.

One of the key technologies in the AVR600 is its advanced room correction system, known as Dirac Live. This sophisticated calibration tool analyzes the acoustics of the room and automatically adjusts the output of the receiver to compensate for any sound anomalies. As a result, listeners experience optimized sound tailored to their specific environment, enhancing the overall listening experience.

For video performance, the AVR600 supports a range of formats, including Dolby Atmos and DTS:X, ensuring an immersive home theater experience with enveloping surround sound. It also features advanced video processing capabilities, allowing users to upscale standard-definition and high-definition content to near 4K quality, further enhancing picture clarity.

In terms of user interface, the AVR600 provides an intuitive on-screen display and a well-designed remote control that makes navigating through settings and options seamless. The receiver is also compatible with smartphone apps for additional convenience, allowing users to control playback and settings directly from their mobile devices.

Overall, the Arcam AVR600 is a versatile audio-visual receiver that combines power, connectivity, and advanced technologies to create an exceptional home entertainment experience. Its unique blend of performance and flexibility makes it an excellent choice for those looking to invest in high-quality audio and video solutions for their homes.