Sony HDR-CX7 - Manual (Page 105)

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Glossary
x 5.1ch surround sound
A system that plays back sound on 6 speakers, 3 at
the front (left, right and center) and 2 at the rear
(right and left) with an additional low-pass
subwoofer counted as a 0.1 channel for
frequencies of 120 Hz or lower.
x AVCHD format
A high definition digital video camera format
used to record an HD (high definition) signal
using the MPEG-4 AVC/H.264 format.
x JPEG
JPEG stands for Joint Photographic Experts
Group, a still image data compression (data
capacity reduction) standard. Your camcorder
records still images in JPEG format.
x MPEG
MPEG stands for Moving Picture Experts Group,
the group of standards for the coding (image
compression) of video (movie) and audio. There
are MPEG1 and MPEG2 formats. Your
camcorder records movies with SD (standard
definition) image quality in MPEG2 format.
x MPEG-4 AVC/H.264
The latest image coding format standardized
jointly by two international standardization
organizations, the ISO-IEC and the ITU-T, in
2003. Compared with the conventional MPEG2
format, MPEG-4 AVC/H.264 has more than twice
the efficiency. Your camcorder employs MPEG-4
AVC/H.264 to encode high definition movies.
x VBR
VBR stands for Variable Bit Rate, the recording
format for automatically controlling the bit rate
(the volume of recording data in a given time
segment) according to the scene being recorded.
For fast-moving video, a lot of “Memory Stick
PRO Duo” space is used to produce a clear image,
so the recording time to the “Memory Stick PRO
Duo” shortens.
x Thumbnail
Reduced-size images which enable you to view
many images at the same time. [VISUAL
INDEX], [
INDEX], [ INDEX], etc. are
thumbnail display system.
x Dolby Digital
An audio encoding (compression) system
developed by Dolby Laboratories Inc.
x Dolby Digital 5.1 Creator
Sound compression technology developed by
Dolby Laboratories Inc. which compresses audio
efficiently while preserving high sound quality.
Sounds are compressed effectively with high
quality sound, and it enables producing 5.1ch
surround sound.
Quick Reference