Glossary terms, covering electronic products with the letter J.
Photograph Joint Expert Group. Name of the group who developed an image compression process. The JPEG algorithm involves a loss of information, but the compression ratios are very high (between 4 and 30).
Standard connector for headphones, some microphones, musical instruments, and semi-professional use. The measurement standard is 6.35mm in diameter. The mini-jack measurement is 3.5 mm in diameter and is used for portable devices. These connectors are available in mono (2 contacts) and stereo (3 contacts). There are models with 4 contacts. Some devices use stereo jacks to connect mono signals because they are more compact and less expensive than XLR.
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