Pioneer PRV-9000 Aspect Ratio, Chapter, Digital Audio, Dynamic Range, Mpeg Audio, Mpeg Video

PRV-9000 Operating Instructions

Aspect Ratio

The width of a television screen relative to its height. Conventional TVs are 4:3 (screen being close to square) while wide-screen models are 16:9 (screen close to twice as wide as the height)

Chapter

A title on a DVD is divided in to smaller segments called chapters. See also Title.

Digital Audio

An indirect representation of sound by numbers. During recording, the sound is measured at discrete intervals (44, 100 times a second for CD audio) by an analog-to-digital converter. The converter generates a stream of numbers that represent the sound. On playback, a digital-to-analog converter generates an analog signal based on these numbers. See also Sampling Frequency and Analog Audio.

Dolby Digital

With multi-channel audio, this high-quality surround sound system is used in many modern movie theaters.

DTS

DTS (Digital Theater System) is a surround sound system similar in quality to Dolby Digital.

Dynamic Range

The difference between the softest and the loudest sounds possible in an audio signal without distortion or white-noise. Dolby Digital and DTS soundtracks are capable of a wide dynamic range thus are popular in move theaters.

MPEG Audio

MPEG is an audio format used on Video CDs and some DVD discs. The PRV- 9000 can convert MPEG audio to the CPM format for wider compatibility with digital recorders and AV amplifiers. See also PCM.

MPEG Video

MPEG video format is used for Video CDs and DVDs. Video CD uses the older MPEG-1 standard while DVD uses the higher-quality MPEG-2 standard.

Optical Digital Output

A port or jack that carries digital audio signals as light pulses. The special optical cord may be purchased from most audio dealers.

PCM (Pulse Code Modulation)

PCM is the most common system of encoding digital audio on to CDs and DAT sources. PCM provides excellent quality but requires excessive amounts of data when compared to formats such as Dolby Digital and MPEG Audio. For compatibility with digital audio recorders (CD, MD, and DAT) and AV amplifiers with digital inputs, the PRV-9000 can convert Dolby Digital and MPEG Audio in to PCM. See also Digital Audio.

PBC (PlayBack Control)

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