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Showing posts from June, 2018

EVER HEARD OF AUDIO WIRE RECORDING?

Oxford Duplication Centre Audio Recording to CD, WAV, AIFF, MP3 SO WHAT IS WIRE RECORDING? Wire recording or magnetic wire recording was the first early magnetic recording technology. An analog type of audio storage in which a magnetic recording was made on a thin steel wire. The first crude recorder was invented in 1898 by Danish inventor  Valdemar Poulsen.   With the first magnetic audio recorder to be made commercially available anywhere was The Telegraphone, which was manufactured by the American Telegraphone Company in Springfield Massachusetts. HOW DOES IT WORK? The wire is pulled rapidly across a recording head which magnetises each point along the wire in accordance with the intensity and polarity of the electrical audio signal being supplied to the recording head at that instant.   By later drawing the wire across the same or similar head whilst the head is not being supplied with an electrical signal, the varying magnetic field induces a varying ele

Understanding file sizes (Bytes, KB, MB, GB, TB)

Understanding file sizes (Bytes, KB, MB, GB, TB) A byte is a sequence of 8 bits. A single letter or character would use one byte of memory (8 bits), two characters would use two bytes (16 bits). Put another way, a bit is either an 'on' or an 'off' which is processed by a computer processor, we represent 'on' as '1' and 'off' as '0'. 8 bits are known as a byte, and it is bytes which are used to pass our information in it's basic form - characters. An alphanumeric character (e.g. a letter or number such as 'A', 'B' or '7') is stored as 1 byte. For example, to store the letter 'R' uses 1 byte, which is stored by the computer as 8 bits, '01010010'. A document containing 100 characters would use 100 bytes (800 bits) - assuming the file didn't have any overhead (additional data about the file which forms part of the file).  Note, many non-alphanumeric characters such as symbols and fo

Comparision between 10-bit Uncompressed and FFV1 Video Archive Preservation at Oxford Duplication Centre

DISCUSSING FFV1 The most common challenge in digitising moving image is the file sizes that result from the actual digitisation.  The file sizes can be huge and with that comes the increased cost of storage and maintenance for long term preservation. Common consensus consider 10-bit uncompressed to be the preservation standard for moving image because it uses no file compression.  It is considered the most reliable safest format for moving image preservation at the current time. 10-bit uncompressed deliver high image resolution, colour quality and sharpness whilst avoiding motion compensation and compression artefacts. THE DOWNSIDE TO 10-BIT UNCOMPRESSED 1 hour of 10-bit uncompressed video can produce a 100gb file. To put it into perspective it would take 21 DVDs to store a video of this size.  As you can see, its a lot of data! WHAT IS FFV1? FFV1 (Full name:  FFmpeg Video Codec 1 ) Contained by ‎: ‎ AVI ‎, ‎ MKV ‎, ‎ MOV ‎ Latest release ‎: ‎Version

Family Bulk Photograph Scanning Services in Oxfordshire UK

SCANNING BULK PHOTOGRAPHS WITH EASY AFFORDABLE OPTIONS TO JPEG  OR TIFF FILES - PERFECT FOR VIEWING ONLINE Our photograph scanning services are very popular in Oxfordshire and the surrounding areas. We provide for both corporate and private clients, to include educational and science sectors. Ordering is simple .  Please either post your photographs or bring them into our Kidlington office. From there we will process and scan your photos to JPEG files.  If you require an archival format then we offer TIFF files which are perfect for publications and other archival requirements.  Orders take 5-7 working days. From there we will contact you to collect your order ready to pay via card. Our services include photo transfer, helping convert old photos to digital formats that are suitable for your computer, smart TV or simply onto DVD as a stunning slideshow for your family entertainment. Our services are highly recommended by 1000's of clients in and around Oxfordshire. Trust