Audio over CAT5

First Attempt

Sending line level audio signals over CAT5 cable only works for extremely short distances. There comes a point where the noise becomes irritating and the signal becomes quiet (certainly a problem with about 20m of cabling).

Solution

The transformer converts the signal from unbalanced (i.e. relative to ground) into a balanced signal (i.e. inverted waveform down each wire). The same circuit is applied in reverse at the other end of the stretch of CAT5. This cut the noise to inaudible levels.

Submitted by marek on Sun, 01/19/2003 - 00:00

Moving Fire Staff

Submitted by marek on Sun, 12/08/2002 - 00:51

kinterbasdb: My Update

Phew.

It’s been a pretty interesting “first day” of releases. I have to admit
to myself that I hadn’t quite been organised enough and merged two
bug-fixes into the main source tree (did I lose applying them somewhere
between work and home? I need to stop having three CVS repositories and
carry just one around on CompactFlash!).

Submitted by marek on Sun, 01/20/2002 - 13:00

There will be a satsuma party[1] to celebrate my 20th birthday starting about 8pm till whenever on the balcony (weather permitting, else it’ll be somewhere else) at Castle House[2] tomorrow, Monday 20th November, the two thousandth year since about six years after a rather influential man was born.
Bring satsumas, tangerines, clementines and other assorted citrus fruit[3].
There is no dress code[4].
— Maz
…you can find all you need in Sainsbury’s…
[1] a satsuma party is like a pyjama party, except rather than wearing pyjamas, you eat satsumas

Submitted by marek on Sun, 11/19/2000 - 16:16

possibly the most surreal day of the year?

Old content migrated from a very long time ago…

today has been, by far, the craziest day of the entire year so far.

it started at 8am, having had about 6 hours sleep since last night’s concert. i packed a sleeping bag, clothes, some paper, pens, books, money and tickets, before heading downstairs, grabbing a microwave meal (a curry it turned out), stuffing it down myself and running off to the metro station.

Submitted by marek on Mon, 04/03/2000 - 23:00

Dream Theater in Manchester

Submitted by marek on Mon, 04/03/2000 - 22:00

i remember a dream

Old content migrated from a very long time ago…

i remember the dream i was in when i woke this morning, but only vaguely now (as it is a number of hours since i awoke).

i remember it had something to do with lessons at school. the school was something like a cross between my primary and secondary schools, especially in the way the classrooms looked inside. i remember that the school suddenly had an outing elsewhere, like a geography field trip (although it wasn’t a geography lesson that i was in, or returned to after the trip).

Submitted by marek on Sun, 04/02/2000 - 23:00

the calm before the storm

Old content migrated from a very long time ago…

less than 24 hours till the metropolis 2000 dream theater concert…!

so much to do - wrote to ewan regarding the agreement for payment. phoned blade and firebird and sorted out what’s happening on monday and tuesday. it was good to talk to blade again! long time, no see or speak (damned holidays).

[[[snip]]]

Submitted by marek on Sat, 04/01/2000 - 23:00

i want to be a cat

Old content migrated from a very long time ago…

again i woke early this morning, the tick-tock of regression rousing me from an unpleasant dream (the content of which i could not remember as is most common for me, although i do remember that i was dreaming just a moment before waking). i chose appropriate clothing for the contract i was to try to fulfil later that day, and packed a spare change of clothing (with appropriate accessories).

Submitted by marek on Tue, 03/28/2000 - 23:00

Horses in a Snowy Landscape

Submitted by marek on Mon, 12/20/1999 - 09:00

Pages