compress

How does an MP3 player work?

Reviews Using principles of psychoacoustics (how the brain perceives sound) and perceptual coding (eliminating imperceptible sounds), engineers develop algorithms, called codecs (compression decompression), that compress songs into the smallest possible...

9 May 2005, 15:33

Hitachi DZ-MV580E review

Reviews In contrast, MiniDV camcorders compress video at a fixed rate of 25 Mbps -- storing over four times more picture data than a DVD camcorder. This is because DVD camcorders compress video using MPEG-2, which is a fairly lossy format.

Editor's rating   7

Tags: hitachi, camcorders, compress, shape

14 May 2005, 11:59

psychoacoustics

Reviews The science of how ears perceive the loudness, pitch and quality of sound, which is used to develop codecs that compress sound data and make our ears think that nothing is missing, among other things.

21 December 2006, 16:45

Sony Handycam DCR-SR42 review

Reviews That goes double for camcorders which record directly to hard disk or DVD, since they need sufficient pixels to compress into a decent image. Though most digital cameras produced today have sufficient resolution to make the spec itself almost a non...

Editor's rating   6

Tags: sony, models, switch, camcorders

15 May 2007, 23:00

JPEG (Joint Photographic Experts Group)

Reviews You can choose how much to compress a JPEG file, but the smaller you make it, the more colour information is lost. A format developed by the Joint Photographic Experts Group for storing and compressing high-quality colour and greyscale images (.jpg...

21 December 2006, 11:17

PNG (Portable Network Graphics)

Reviews PNGs also support progressive rendering, as interlaced GIFs do, and tend to compress better than GIFs (when the compressed file is decompressed for viewing, it retains all of the graphics information of the original).

21 December 2006, 16:15

Sling Media Slingbox Solo review

Reviews SlingStream technology, so even if you start with an HD source, it'll compress the bejeezus out of it until it looks like standard definition. The Sling Media Slingbox Solo is the entry-level alternative to the Slingbox Pro.

Editor's rating   9.1

Tags: sling media, hd, cable, mobile phone

11 October 2007, 14:42

Archos AV4100 review

Reviews The alternative option is to buy Dr DivX software from the DivX site, which will compress your DVDs directly to the device, in lovely 700MB files. It's a grand claim, but one that the Archos AV4100 personal video player can justifiably boast.

Editor's rating   7.7

Tags: archos technology, dvd player, hard drive, remote control

3 June 2005, 8:19

Arcam DiVA DT-91 review

Reviews The radio exhibits good tonal balance, doing its best to avoid over-emphasising the low end and create space despite the tendency of radio producers to heavily compress broadcasts. At first glance, the DT-91 is a well-built separates unit with both...

Editor's rating   8.1

Tags: arcam, optical, station, stations

12 June 2006, 16:30

Sony ST-SDB900 review

Reviews Though DAB is still at the mercy of radio engineers who love to compress -- not to mention the low bit rate of UK DAB broadcasts -- the ST-SDB900 compares very well to other tuners in its class. It built Japan's first transistor radio back in...

Editor's rating   7.5

Tags: sony, stereo, optical, stations

9 March 2006, 16:09

Toshiba SD-350E review

Reviews DivX can compress DVD movies down to much smaller size, and the Dr DivX software can be used to make the process easier. The problem lies in screen resolutions -- most flat screens are much higher res than DVD.

Editor's rating   7

Tags: toshiba, high definition, optical, upgrade

15 November 2005, 16:43