Plans are underway for such a reference site that will be usable by UK AG nodes and (but don't tell anyone!) probably everyone else too. I don't have a clear idea of how long this will be, but funding has been secured and work is starting... No good to you now, Natalia, but maybe next time.
_____ From: [email protected] [mailto:[email protected]] On Behalf Of Osland, CD (Chris) Sent: 07 February 2005 14:24 To: Natalia Costas Lago; ag-tech Subject: RE: [AG-TECH] audio levels and sound quality I offered to set up a reference site which emitted a number of audio test streams (white noise, pink noise cyclically looped, music, speech, whale sounds (!)) some years back but the funding didn't come through from the UK sources funding the rollout of AG system at UK eScience centres. And I'm not allowed to work on something that isn't funded. But it's still a really good idea, if someone else doesn't have my funding restrictions. Each source could come from the same machine on a different stream, and users could use a particular one by muting all but one of them at a time. There could even be an extension where a software sound meter on the reference machine showed the incoming level from a given site - a software generated video stream. Without such a reference, you just have to go through the whole level-determining sequence that has been described before: in ClearOne: mic coarse gain mic fine gain mic channel output level output channel level in RAT: SEND level in computer: LINE input level LINE output level in RAT: RECEIVE level in ClearOne line input gain output channel leve on speaker (or amplifier if speakers are passive): gain getting everything around the 0 dB / yellow area. If you have a sound level meter, the level of speech within the room used for testing should be around 70 dBA, as should the level of speech being replayed through the speakers. Cheers Chris ____________________________________________________________________ Chris Osland Office tel: +44 (0) 1235 446565 Digital Media and Access Grid Medialab tel: +44 (0) 1235 446459 BIT Department Access Grid room tel: +44 (0) 1235 445666 e-mail: [email protected] Fax: +44 (0) 1235 445597 CCLRC Rutherford Appleton Laboratory (Bldg. R18) Chilton, DIDCOT, Oxon OX11 0QX, UK [The contents of this email are confidential and are for the use of the intended recipient only. If you are not the intended recipient do not take any action on it or show it to anyone else, but return this email to the sender and delete your copy of it.] -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of Natalia Costas Lago Sent: 07 February 2005 12:15 To: ag-tech Subject: [AG-TECH] audio levels and sound quality Hi everybody, We are trying to set all the audio levels of our 6 AG nodes in a proper way. I am looking for a way to check that all audio levels are the same (is there any audio tool available?). Any help about this matters would be greatly appreciated. We are having lots of problems to get good audio. Thanx in advance. Kind regards, Natalia. ----------------------------------- Natalia Costas Lago email: [email protected]<mailto:[email protected]> Centro de Supercomputacion de Galicia (CESGA) Avenida de Vigo, s/n Campus Sur 15706 Santiago de Compostela - SPAIN Tel: +34 981 56 98 10 Fax: +34 981 59 46 16 http://www.cesga.es/
