Can we determine low frequencies from high frequencies?

28 mins 40 secs,  119.47 MB,  Flash Video  484x272,  29.97 fps,  44100 Hz,  569.0 kbits/sec
Share this media item:
Embed this media item:


About this item
Image inherited from collection
Description: Demanet, L (MIT)
Thursday 15 December 2011, 16:00-16:30
 
Created: 2011-12-19 11:10
Collection: Inverse Problems
Publisher: Isaac Newton Institute
Copyright: Demanet, L
Language: eng (English)
Distribution: World     (downloadable)
Explicit content: No
Aspect Ratio: 16:9
Screencast: No
Bumper: UCS Default
Trailer: UCS Default
 
Abstract: Data usually come in a high frequency band in wave-based imaging, yet one often wishes to determine large-scale features of the model that predicted them. When is this possible? Both the specifics of wave propagation and signal structure matter in trying to deal with this multifaceted question. I report on some recent progress with Paul Hand and Hyoungsu Baek. The answers are not always pretty.
Available Formats
Format Quality Bitrate Size
MPEG-4 Video 640x360    1.84 Mbits/sec 397.59 MB View Download
WebM 640x360    775.81 kbits/sec 162.61 MB View Download
Flash Video * 484x272    569.0 kbits/sec 119.47 MB View Download
iPod Video 480x270    506.48 kbits/sec 106.34 MB View Download
MP3 44100 Hz 125.07 kbits/sec 26.06 MB Listen Download
Auto (Allows browser to choose a format it supports)