Terminology

Terminology

Dolby Digital (AC-3)

Dolby Digital (AC-3) is a digital audio compression 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 quanti- ties 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, a high quality sound system for use in movie theaters which was developed by Digital Theater Systems Corp.

DTS has six independent sound tracks. It realizes DTS surround sound with a superior feeling of presence for use in theaters 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 should be compatible with DTS.

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 which restores four channels of signals recorded onto two channels back to four channels (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-5205 owner manual Terminology