http://knowledge.lom.audio/ 2026-04-13T13:02:52+00:00 http://knowledge.lom.audio/ http://knowledge.lom.audio/lib/tpl/bootstrap3/images/favicon.ico text/html 2017-07-10T12:20:29+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/album_to_ytb?rev=1499682029&do=diff How to upload your album to youtube 1. Concat the wave files in the folder sox *.wav out.wav 2. Convert to youtube aac ffmpeg -i out.wav -c:a aac -strict -2 -b:a 320k out.m4a 3. Merge png picture (cover.png) with audio ffmpeg -loop 1 -framerate 2 -i cover.png -i out.m4a -c:v libx264 -preset medium -tune stillimage -crf 18 -c:a copy -shortest -pix_fmt yuv420p output.mkv text/html 2018-03-24T21:57:49+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/ambisonics?rev=1521925069&do=diff Ambisonics <https://en.wikipedia.org/wiki/Soundfield_microphone> PICTURES * <https://www.google.com/search?q=diy+ambisonic+microphones&client=firefox-b&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjJqMa1i4LaAhXBPFAKHeqvCdMQsAQIkQE&biw=1280&bih=677> GENERAL + COMMERCIAL * <http://www.ambisonic.net> * <https://www.creativefieldrecording.com/2017/06/07/the-unconventional-microphone-buyers-guide/> * <https://www.creativefieldrecording.com/2017/03/01/explorers-of-ambisonics-introduction/> … text/html 2019-05-15T12:09:39+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/contact_mics?rev=1557914979&do=diff DIY contact microphones This is a collaborative article dedicated to various aspects of making of contact microphones and contact microphone pre-amplifiers (buffers or impedance converters). Contact microphones A microphone transduces acoustic energy to electrical energy, converting sound to voltage. Most microphones that we are familiar with react to sound pressure waves in air. Contact microphones are useful in performing a different function, text/html 2018-04-09T17:08:13+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/diy_stereo_bar?rev=1523286493&do=diff DIY stereo bar (on budget) Ingredients: * unperforated, zinc-plated steel DIN rail (available in electrical supply stores or TME) * 2 K&M 3/8“ thumb screws (available on Thomann) * 3 K&M 3/8” thumb wheel (available on Thomann Tools: * drill for making the holes in the rail text/html 2019-03-19T15:47:26+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/electromagnetic_sensitivity?rev=1553006846&do=diff Electromagnetic sensitivity research Place to store links to various articles / videos / podcasts on the subject. * Wikipedia article • the starting point * What We Don't See • documentary movie about people with electromagnetic hypersensitivity * Quiet Zone • artistic documentary movie about people with electromagnetic hypersensitivity text/html 2016-10-03T23:49:03+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/electromagnetic_sensors?rev=1475531343&do=diff Elektromagnetické senzory SQUID anteny radiation resistance - antenna turnover frequency - turning point for the loop resistance and loop inductance fa = Ra / 2pi La The length of the coil l is recommended to be about 0.7-0.9 lc l = dlzka cievky text/html 2016-10-27T17:19:19+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/electromagnetic_sensors_measurments?rev=1477581559&do=diff Electromagnetic sensors measurements Measurement conditions EM source: white noise player through speaker Measurement device position: 4 cm from the speaker coil Recording device: Olympus LS-11 (Gain: 10, High sensitivity) FFT plot: 65536 window size, Blackman-Harris text/html 2017-10-29T12:24:24+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/field_recording_in_south_east_asia?rev=1509276264&do=diff Field recording in South-East Asia by Greg Simmons I've been a regular backpacking recordist since 2004, after spending decades in recording studios and concert halls. I have typically spent around three months per year since 2004 running around Nepal, India, Tibet, Thailand, Myanmar (Burma), Borneo and similar places recording music and sounds. I've used all kinds of stuff in all kinds of places. Right now I'm in the 10th month of what will hopefully be a never-ending recording journey - it w… text/html 2025-08-04T12:59:22+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/geofon_xlr?rev=1754305162&do=diff Geofón XLR mod One of our customers approached us with an interesting idea—they wanted to create a “wireless” version of Geofón using small XLR wireless transmitter. So I designed a special modified version of the Geofón case top to include a heavy duty XLR connector. text/html 2018-01-29T00:16:05+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/horticulture?rev=1517181365&do=diff Horticulture <https://media.osram.info/im/img/osram-dam-1642214/downloads/728289_Horticulture_Lighting_presentation.pdf> <https://www.osram.com/os/applications/horticulture-lighting/index.jsp> <https://www.rs-online.com/designspark/building-a-connected-greenhouse-part-1> <https://www.mouser.sk/Osram-Opto-Semiconductor/Optoelectronics/LED-Lighting/LED-Emitters/High-Power-LEDs-Single-Color/OSLON-SSL-80-Series/_/N-8usfn?P=1yxyapgZ1z0j7bwZ1z0yt3k&Ns=Pricing%7c0> text/html 2017-03-17T13:43:19+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/hydrophones?rev=1489754599&do=diff DIY hydrophones * Construction and Testing of Low Noise Hydrophones by Miguel Alvarado Juarez * A guide to constructing hydrophones and hydrophone arrays for monitoring marine mammal vocalizations by Jay Barlow, Shannon Rankin and Steve Dawson * A cheap sensitive hydrophone for monitoring cetacean vocalisations by ? * Electret microphone in mineral oil Main methods * Piezoceramic sensors (disc – basic, cylinder and other shapes - advanced) * Electret microphone in mineral oil (… text/html 2023-08-28T15:28:49+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/lewitt_to_rycote?rev=1693229329&do=diff Lewitt LCT 540 S + Rycote Stereo Windhsield adapter Lewitt LCT 540 S is a popular field recording microphone due to its super low-noise figures. Unfortunately there are no good ready-made windprotection solutions on the market, so I decided to make a improvised version on my own. Magnus Bergson from fieldrecording.net came up with an interesting text/html 2022-11-24T12:14:07+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/mixpre_knob?rev=1669288447&do=diff Sound Devices MixPre knob Specs: 12 mm diamater, 10.5 mm height, 8.5 mm internal diameter The knob is friction-fitted on the original knob, no need to modify your device. Compatible with MixPre 3, 6, 10T and 10M. Download version 1.2 (*.stl) • Get one from us Extending the knob increases risk of damaging the original encoder when dropped, since the knob is protruding over the edge of the protective corners. Use at your own discretion. text/html 2022-08-29T22:31:09+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/modular_stereo_bar?rev=1661805069&do=diff Modular stereo bar Ingredients: * 3x K&M 23550 Microphone Stereo Bar (Thomann) * 2x K&M Thumbwheel Alu BK (Thomann) Total available width is 52 cm, less than 20 cm folded. Weight is around 180 grams. The two nuts are placed in between the connecting bolt and the lower bar. The screw works better that way. Total price excluding shipping is 32€. text/html 2017-02-26T23:10:33+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/sklo?rev=1488147033&do=diff text/html 2016-07-13T22:24:35+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/start?rev=1468441475&do=diff LOM research base * DIY contact microphones * DIY hydrophones text/html 2023-09-14T12:01:56+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/usi_clips?rev=1694685716&do=diff DIY Uši microphone clips & accessories Classic clip 3D printed part + eBay sourced lavalier microphone clip Download (*.stl) • Buy Magnetic clip 3D printed part + neodymium magnet (ELESA+GANTER GN 50.2-ND-13-M3) Download (*.stl) • Buy Uši basic mount For use with standard microphone thread 3/8 text/html 2019-10-03T11:17:21+00:00 Anonymous (anonymous@undisclosed.example.com) http://knowledge.lom.audio/research/voodooman?rev=1570094241&do=diff VooDooMan Biography Marián Meravý a.k.a VooDooMan (17. 5. 1980 – 20. 10. 2015) was an experimental musician, painter, programmer, writer and radio presenter based in Bratislava, Slovakia. He authored 9 music albums, tens of humorous podcasts