Various websites , including Extron mention 15ft, 45ft and 75ft as the possible limits of HDMI cable length, based on quality of cable, amount of data sent and type (power specs) of the graphic card of the device sending the signal.
Category Archives: Learning
Microphone Feedback
Aside from the cell phone-caused speaker interference, there are additional sources of noise/interference in an audio system, including mic feedback. Here are some more resources that describe ways to reduce feedback:
http://toonz.ca/bose/wiki/index.php?title=Microphone_Feedback
http://www.google.com/search?q=mic+feedback
http://en.wikipedia.org/wiki/Audio_feedback#Directivity
http://www.mediacollege.com/audio/howto/feedback.html
http://www.audiocourses.com/article113.html
http://proavmagazine.com/acoustics/designing-a-mix-minus-distributed-sound-system.aspx
http://en.wikipedia.org/wiki/Microphone#Microphone_polar_patterns
http://www.ccisolutions.com/worshiptools/learn-about-microphone-feedback
http://www.shure.com/idc/groups/public/documents/webcontent/us_pro_mics_for_music_sound_ea.pdf
http://www.shurenotes.com/issue23/article.html
http://www.shurenotes.com/issue27/article.html
http://www.dt4u.com/dtsystems/feedback.php
http://boards.straightdope.com/sdmb/archive/index.php/t-34057.html
http://www.behringer.com/EN/Products/FBQ2496.aspx
http://www.mp3backingtrax.com/article56.htm
Good Resources for Planning Video Projection
Projector Central to help you pick a projector: http://www.projectorcentral.com/
Calculate screen size and projector distance based on seating arrangement and aspect ration: http://myhometheater.homestead.com/viewingdistancecalculator.html
Figure out aspect ratios: http://en.wikipedia.org/wiki/Aspect_ratio_(image)
Mounting PTZ Cameras for Lecture Capture
Microsoft Research suggests: 2m off the floor (ceiling OK), such that occupants cannot block (normally) and aligned with expected location of the lecturer.
tinyurl.com/cmrapos
Evaluating Multimedia Room Control
Lutron vs Crestron Lighting: http://www.avsforum.com/avs-vb/showthread.php?t=875223
Crestron vs Extron vs AMX: http://www.vtctalk.com/showthread.php?t=39922
Archived chatter around similarities between Global View and RoomView: http://www.audioholics.com/news/industry-news/crestron-extron-lawsuit
Good mailing lists for AV:
http://tech.groups.yahoo.com/group/Crestron/
http://tech.groups.yahoo.com/group/Show-Control/
Apple Product Tutorials (for free!)
http://support.apple.com/kb/HT4427
Videoconferencing and Telepresence
Overview of Web Conferencing Tools:
https://spreadsheets.google.com/ccc?key=0AgJkAm8YfFJndFRMdnZIRnVOYzE0VXNkV2RnWXFidlE&hl=en&pli=1#gid=0
Useful articles for videoconferencing and telepresence solutions:
http://www.insidehighered.com/views/2010/06/22/jansson
http://www.nitle.org/help/telepresence.php.
http://www.uvccompatiblewebcams.com/
http://www.tandberg.com/video-conferencing-case-studies/distance-learning-videoconferencing-education.jsp
Media Training Resources
Just a list of free training resources on multimedia topics:
http://www.infocomm.org/cps/rde/xchg/infocomm/hs.xsl/10153.htm
Technology Enhanced Classrooms – How to Build a Smart Classroom
Laptop Classrooms:
* http://www.smartdesks.com/pi-computer-tables-laptop-tables.asp
Distance Learning Classrooms:
* http://campustechnology.com/Articles/2010/06/23/Distance-Learning-in-High-Definition.aspx?Page=3
Professional development:
* http://www.infocomm.org
* For specializing in smart classroom design: CTS-D Certification: http://www.infocomm.org/cps/rde/xbcr/infocomm/CERT_Handbook_CTS-D.pdf
* For General design and installation of a smart classroom: http://www.infocomm.org/cps/rde/xbcr/infocomm/Cert_Handbook_CTS.pdf
* For specializing in smart classroom installation: http://www.infocomm.org/cps/rde/xbcr/infocomm/CERT_Handbook_CTS-I.pdf
* http://www.avispl.com/events/professionalseries/event.asp?EventID=85
* http://www.cinema-training.com/
* kenstone.net ?
* http://www.nercomp.org/events/event_single.aspx?id=103
* http://www.crestron.com/features/every_room_connected/
* http://www.crestron.com/solutions/digitalmedia_hdmi_distribution/resources.asp in particular the digital design guide http://www.crestron.com/my_crestron/misc/nop/dg_digitalmedia.pdf
* http://www.crestron.com/training/crestron_technical_institute/online_training/quick_courses.asp
Free reading and free instructional videos
* http://campustechnology.com/articles/list/av-presentation.aspx
* http://educause.mediasite.com/mediasite/SilverlightPlayer/Default.aspx?peid=ecde9e53b57147ffb7252c5da55b445a
* http://www.educause.edu/EDUCAUSE+Quarterly/EDUCAUSEQuarterlyMagazineVolum/AdoptingDigitalTechnologiesint/157301
* http://www.educause.edu/E09+Hybrid/EDUCAUSE2009FacetoFaceConferen/BuildingRenovatingandMaintaini/176118 (very good)
* http://www.educause.edu/Resources/Browse/Technologyenhanced%20Classrooms/34074
* http://www.jjorstad.blogspot.com/
Related: https://sites.middlebury.edu/petar/2010/06/14/technology-enhanced-classrooms-choosing-a-smart-classroom-control-system/