Terminology

Terminology

Dolby Digital

Dolby Digital is a digital audio compres- sion technology developed by Dolby Laboratories. It is compatible with not only stereo (2-channel) sound, but also 5.1-channel surround sound. The signals for the different channels are completely independent, so large quantities of audio data can be recorded efficiently on discs, and since the sound is digital there is little loss of sound quality.

*The separately sold digital audio processor (PXA-H510) is required to enjoy Dolby Digital sound.

DTS

This is a home-use digital sound format of the DTS Sound System. This is a high quality sound system, developed by Digital Theater Systems Corp for use in movie theaters.

DTS has six independent sound tracks. The theater presentation is fully realized in the home and other settings. DTS is the abbreviation for Digital Theater System.

*To enjoy DTS surround sound you need the separately sold DTS digital audio processor. The DVD video software must also have a DTS sound track.

Center speaker

Front speakers

Rear speakers

Subwoofer

Speaker layout for enjoying Dolby Digital sound/dts sound

Dolby Pro Logic

Dolby Pro Logic is a Dolby Surround format encoded onto two channels. Proper decoding reproduces four chan- nels (front left/right, center and rear surround (monaural)) upon playback.

*The separately sold digital audio processor (PXA-H510) is required to enjoy Dolby Pro Logic sound.

Linear PCM audio (LPCM)

LPCM is a signal recording format used for music CDs. Whereas music CDs are recorded at 44.1 kHz/16 bits, DVDs are recorded at 48 kHz/16 bits to 95 kHz/24 bits, thereby achieving higher sound quality than music CDs.

Rating levels (parental lock)

This is a function of the DVD for restricting the viewing age as stipulated by laws in different countries. The way in which viewing is restricted differs from DVD to DVD. Sometimes the DVD cannot be played at all, other times certain scenes are skipped, and other times certain scenes are replaced with other scenes.

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Alpine DVA-5205P owner manual Terminology