Various electronic and electrical devices, recorded using a Radio Shack telephone pickup while I wandered around the flat with the laptop. Well, that's why I was wandering around - not that I wouldn't anyway. The files are in alphabetical order. When recording, I started in the kitchen and moved to the 'orange room', where the other computers and routers are kept.
File list and comments: total 76844 -rw-r--r-- 1 lex users 1659007 Jun 18 03:02 EL_OS_clock.mp3 : Portable radio clock with electroluminescent display and 'beep-beep' alarm which becomes very irritating after a minute or so. -rw-r--r-- 1 lex users 246 Jun 18 03:00 README.txt : Text version of this file -rw-r--r-- 1 lex users 713334 Jun 18 03:03 attraction-lcd-monitor.mp3 : 17-inch LCD monitor -rw-r--r-- 1 lex users 1522334 Jun 18 03:03 attraction.mp3 : Pentium-4/3000 PC -rw-r--r-- 1 lex users 502096 Jun 18 03:04 belinea-monitor.mp3 : Old (1998) CRT monitor - still working fine in spite of several house moves -rw-r--r-- 1 lex users 3570752 Jun 18 03:04 belkin_bt_usb.mp3 : USB Bluetooth adaptor with a very powerful output (100-metre range) -rw-r--r-- 1 lex users 4649087 Jun 18 03:05 cordless-phone.mp3 : Philips DECT cordless phone -rw-r--r-- 1 lex users 1439160 Jun 18 03:05 cranefly.mp3 : AMD K6-500 PC (webserver) : The loud sawtooth-like sound is the CD drive motor, while the low-pitched : whirring is the floppy drive. -rw-r--r-- 1 lex users 485795 Jun 18 03:06 earlgrey.mp3 : A nice hot cup of tea (doesn't emit much electromagnetic energy) -rw-r--r-- 1 lex users 297456 Jun 18 03:06 es_light.mp3 : Energy-saving fluorescent desk lamp - big 50Hz buzz. -rw-r--r-- 1 lex users 1425785 Jun 18 03:06 ethernet.mp3 : Supposed to be the emanations of a bit of Cat-5 cable, although all I : picked up was interference from the laptop. -rw-r--r-- 1 lex users 1019947 Jun 18 03:06 gupi.mp3 : Mechanical toy with a faulty battery and some very powerful motors, which : probably explains why the battery is faulty, actually. -rw-r--r-- 1 lex users 3851620 Jun 18 03:07 ipaq_hx4700.mp3 : Hewlett-Packard hx4700 PDA (backlit display, wi-fi, Bluetooth) -rw-r--r-- 1 lex users 2130882 Jun 18 03:07 kettle.mp3 : TEAM kitchen kettle -rw-r--r-- 1 lex users 307494 Jun 18 03:08 mercury_switch.mp3 : Not a mercury tilt switch, but a Kobian/Mercury Ethernet switch (5-port) -rw-r--r-- 1 lex users 470331 Jun 18 03:08 microwave.mp3 : Samsung microwave oven (800W) -rw-r--r-- 1 lex users 4523028 Jun 18 03:08 mos_digital_radio.mp3 : Ministry Of Sound portable digital radio. I was able to record good- : quality audio from the earphones. The radio emitted a lot of noise : from its EL display. Radio stations featured: BBC Radio Five Live, : Acen (Welsh), BBC Asian Network, DNN, various other local stations. : Recorded at 02:26. -rw-r--r-- 1 lex users 1503108 Jun 18 03:08 nokia_7650.mp3 : Nokia 7650 GSM mobile phone / cellphone. The low-frequency noise at the : start of the sample is caused by the laptop itself. -rw-r--r-- 1 lex users 694775 Jun 18 03:09 pclink-switch.mp3 : 5-port Ethernet switch (emits a lot of clock noise) -rw-r--r-- 1 lex users 4198945 Jun 18 03:09 pickup.mp3 : Telephone pickup test. I am not sure what I was recording here; at a : guess, I'd say it was probably the laptop (Fujitsu-Siemens Amilo Pro V1000). -rw-r--r-- 1 lex users 568133 Jun 18 03:10 plasma-clock.mp3 : Quartz wall clock with blue plasma dial (plasma emits much crackly noise) -rw-r--r-- 1 lex users 1157456 Jun 18 03:10 plasma-globe.mp3 : One of those lightning-like plasma lights -rw-r--r-- 1 lex users 723776 Jun 18 03:11 playstation2.mp3 : Sony Playstation 2, of the original 'black and chunky' type. Has a large : PSU so there's a lot of 50 Hertz hum. The 'sweeping' low-pitched noise is : the DVD drive. -rw-r--r-- 1 lex users 2097446 Jun 18 03:11 printer.mp3 : Hewlett-Packard Deskjet 870Cxi. When I recorded this, it was busy doing : its demo printout - you can hear the print head shuttling around. The : middle-pitched notes are from the stepper motor that powers the platen. -rw-r--r-- 1 lex users 10235947 Jun 18 03:11 psp.mp3 : Sony PSP1000 ('Playstation Portable'), originating from Japan. Much : electronic noise here, and I was startled that the UMD drive causes a : very powerful magnetic pulse (you can hear this after I started playing : "Everybody's Changing". These brief clips of music are from Keane's : 'Hopes & Fears' album, copied to the Memory Stick PRO Duo as mp3s. : The UMD game featured is 'Lumines'. -rw-r--r-- 1 lex users 2715607 Jun 18 03:12 roberts-radio.mp3 : Roberts portable digital radio: there's a lot of 50Hz buzz from the mains : transformer here, and audio from local radio stations. -rw-r--r-- 1 lex users 1737165 Jun 18 03:12 sleep-machine.mp3 : Radio Shack 'Sleep Machine'. This is a digital clock which outputs several : sound clips: ocean, wind, train, 'night'. The unit has a fault where it : resets when the sound stops playing (possibly needs a capacitor). -rw-r--r-- 1 lex users 2789168 Jun 18 03:12 smc-2835w-wifi.mp3 : PCMCIA/Cardbus wireless adaptor -rw-r--r-- 1 lex users 1057145 Jun 18 03:13 smc7804wbra-router : Wireless Ethernet ADSL router : Buzzes a lot. Crashes as well, although I didn't record that. -rw-r--r-- 1 lex users 820162 Jun 18 03:13 sparcserver.mp3 : This ancient computer (1990) has many noisy fans and an efficient PSU. : I picked up lots of clock noise from the system card. At the end of the : sample, I switch the computer off. -rw-r--r-- 1 lex users 2061919 Jun 18 03:13 spc_c500.mp3 : SPV C500 cellphone/mobile: large backlit display, Bluetooth. In this : demonstration I call my home phone (the DTMF tones can be heard). -rw-r--r-- 1 lex users 1918723 Jun 18 03:14 tandy102.mp3 : Radio Shack Model 100 / Tandy 102 portable computer. This computer is 20 : years old and emits almost no RF noise. The only noises you can hear are : from the laptop. The clicking sounds and high-pitched tone are from the : built-in 300 baud modem. -rw-r--r-- 1 lex users 340763 Jun 18 03:14 toaster.mp3 : This being an appliance with a heating element, much 50Hz hum is picked up. -rw-r--r-- 1 lex users 507529 Jun 18 03:14 torch.mp3 : Shake... shake... shake.. click, click (18s). This torch requires no : batteries and is powered by shaking it: a magnet moves up and down between : two coils (or is it a coil moving between magnets?), causing a capacitor to : be charged. The capacitor slowly discharges when the light is switched on : (white LED). -rw-r--r-- 1 lex users 1287441 Jun 18 03:14 travel_clock.mp3 : A cheap portable travel clock with a quartz-controlled solenoid mechanism : and a 'bip-bip-bip-bip' alarm. -rw-r--r-- 1 lex users 600316 Jun 18 03:15 winter-benq-monitor.mp3 : This is a TFT monitor. As you'd expect with a TFT, the pickup records : the drive clock of the ... of the.. you know what I'm trying to say, don't : you? ... cos' I'm buggered if I do. -rw-r--r-- 1 lex users 3519922 Jun 18 03:15 winter-mobo.mp3 : AMD Athlon XP/1700 PC. Lots of noise coming from the NVIDIA graphics : card (the fan speed can be heard varying at around 20s). The bursts of : periodic noise are emitted from the system bus - the computer is processing : Marsenne Prime numbers. At 1m55s, the medium-pitched sine tone is from the : EL display of the 'Cooler Master' hard drive fan controller. This repeats : at 02:50, when I change the speed of the HD fan. -rw-r--r-- 1 lex users 1385661 Jun 18 03:15 winter.mp3 : AMD Athlon XP/1700 : The outside of the case: PSU fan, Cooler Master fan controller. The : 'beep-beep' is the alarm reminding me that the CPU fan is not connected to : it (it's plugged into the motherboard so I can monitor the speed with the : system software). -rw-r--r-- 1 lex users 2152616 Jun 18 03:15 wrt54g.mp3 : Linksys WRT54G wireless Ethernet router -rw-r--r-- 1 lex users 5750827 Jun 18 03:16 zaurus.mp3 : Sharp Zaurus SL-C860 PDA