Glossary

Dolby Digital

Digital multi-channel audio standard developed by Dolby Laboratories. It supports transmission and recording of high- quality digital audio signals from monaural up to 5.1 channels using an amount of data that is a fraction of the PCM audio format. The main features of Dolby Digital include:

•Downmixing optimized for monaural, stereo and Pro Logic configurations as well as for playback of 6.1-channel audio.

•Transfer of information related to the dynamic range and the conversation level adjustment.

•Wide range of operating bit rates.Dolby Digital EX/Dolby EX

These extensions of Dolby Digital add the surround back channel to the Dolby Digital channels to deliver a surround effect with enhanced presence and listener envelopment.

Dolby Pro Logic II

This is a matrix decoding technology developed by Dolby Laboratories. It generates 5-channel surround audio with rich feeling of presence from any stereo source, delivering an excellent multidimensional sound field effect even from an ordinary stereo music content including CD music. It offers three modes including the Movie mode optimized for movie playback, the Music mode for music playback and the Game mode for game play.

Dolby Pro Logic IIx

Matrix decoding technology developed by improving Dolby Pro Logic II. It accepts any stereo or 5.1-channel audio input and generates 7.1-channel surround audio with a more natural, smoother surround sound field. It also offers three modes optimized for each source content, including the Movie mode for movie playback, the Music mode for music playback and the Game mode for game play.

Dolby Digital Plus

This is an audio technology developed based on Dolby Digital by improving both the sound quality and functions. It delivers multi- channel surround audio with completely discrete channels. The compatible bit rates have been expanded to between 32 kbps and 6 Mbps from between 96 and 640 kbps with Dolby Digital.

The excellent coding efficiency makes this technology capable of delivering quality audio in max. 7.1 channels without affecting the bit rates assigned for the video and other services. Compatibility with existing home theater systems incorporating the Dolby Digital technology is also secured.

Dolby True HD

This loss-less (reversible) audio technology has been developed by Dolby Laboratories and reproduces high-quality studio- mastered audio data perfectly with bit-order accuracy. It is compatible with up to 7.1 channels when the sampling frequency is 95 kHz and up to 5.1 channels when the sampling frequency is 192 kHz.

Dolby Headphone

This stereo audio technology has been developed by Dolby Laboratories and Lake DSP (presently Dolby Australia) and features reproduction of surround audio through stereo headphones.

Dolby Virtual Speaker

This is a speaker virtual technology that can generate an ideal 5.1- channel home theater environment using only a pair of speakers.

DTS Digital Surround

Digital surround format developed by DTS Corporation. It features low compression rate and high sound quality, and is capable of reproducing max. 5.1 channels.

DTS-ES

This is a 6.1-channel audio technology developed by adding the surround back channel to DTS Digital Surround.

The signal of this format can also be played on existing DTS 5.1- channeel components. DTS-ES consists of two types, which are DTS ES Matrix and DTS-ES Discrete 6.1.

DTS-ES Matrix

With this format, the audio for the surround back channel added to the DTS 5.1-channel audio is allocated to the two surround channels during recording. When the signal is decoded, the audio for the surround back channel is restored from the surround channels to deliver the 6.1-channel audio.

DTS-ES Discrete

With this format, the audio for the surround back channel added to the DTS 5.1-channel audio is recorded in an independent channel.

DTS Neo:6

 

This is a matrix decoding technology developed by DTS

 

Troubleshooting

Corporation, capable of delivering max. 6.1 channels from any

 

2-channel source. It includes two modes, including the DTS Neo 6

 

CINEMA mode optimized for movie playback and the DTS Neo 6

 

MUSIC mode optimized for music playback.

 

DTS 96/24

 

5.1-channel digital audio format developed as an evolution of the

 

DTS 5.1-channel format. It enables high-quality playback with 96

 

kHz sampling frequency and 24-bit quantization (the signal of

 

this format can also be reproduced on existing DTS 5.1-channel

 

player components).

 

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