For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known. 1 Corinthians 13:12
Magnetic tape analysis 'sees' tampering in detail, The National Institute of Standards and Technology (NIST) has developed an improved version of a real-time magnetic microscopy system that converts evidence of tampering on magnetic audio and video tapes—erasing, overdubbing and other alterations—into images with four times the resolution previously available. This system is much faster than conventional manual analysis and offers the additional benefit of reduced risk of contaminating the tapes with magnetic powder. NIST recently delivered these new capabilities to the Federal Bureau of Investigation (FBI) for validation as a forensic tool.
Earlier versions of this system made images with a resolution of about 400 dots per inch (dpi). nist.gov/tape_analysis. The new system uses four times as many magnetic sensors, 256, embedded on a NIST-made silicon chip that serves as a read head in a modified cassette tape deck. The NIST read head operates adjacent to a standard read head, enabling investigators to listen to a tape while simultaneously viewing the magnetic patterns on a computer monitor.
Each sensor in the customized read head changes electrical resistance in response to magnetic field patterns detected on the tape. NIST developed the mechanical system for extracting a tape from its housing and transporting it over the read heads, the electronics interface, and software that convert maps of sensor resistance measures into digital images.
The upgrade included quadrupling the image resolution to 1600 dpi, the capability to scan both video and audio tapes, complete computer control of tape handling, and the capability to digitize the audio directly from the acquired image. The software displays the audio magnetic track pattern from the tape to identify tiny features, from over-recording marks to high-intensity signals from gunshots. The system is designed to analyze analog tapes but could be converted to work with digital tapes, according to project leader David Pappas.
The new nanoscale magnetic microscope also has been used experimentally for non-destructive evaluation of integrated circuits. By mapping tiny changes in magnetic fields across an integrated circuit, the device can build up an image of current flow and densities much faster and in greater detail than the single-sensor scanners currently used by the chip industry, says Pappas. ###
The FBI’s Forensic Audio, Video and Image Analysis Unit receives hundred of audio tapes for analysis annually, representing evidence from crimes such as terrorism, homicide and fraud. The FBI provided partial funding for development of the NIST tape imaging systems.
Contact: Laura Ost firstname.lastname@example.org 303-497-4880 National Institute of Standards and Technology (NIST)
Technorati Tags: Nano or Nanotechnology and Nanotech and Magnetic Tape Analysis or National Institute of Standards and Technology and magnetic audio and video tapes or Federal Bureau of Investigation or WFU launches two nanotechnology startup companies and Helix Nebula, Gaseous Envelope Expelled By a Dying Star VIDEO and President Bush, Gordon Brown, Joint Press Availability VIDEO
|Trackbacks URL for this entry: http://haloscan.com/tb/sookietex3/6242041836186225622|
10 Trackbacks to this Post
The Medias and Democrats Iraq; a crack in the vene Excerpt: Rather than being a case of vindication it is more relief that we are not insane. Some may want to jump up and down with a loud â€˜I told you soâ ... Weblog: DeMediacratic Nation Tracked: 08.02.07 - 12:42 pm
Illegal Immigrant Sleeps His Way into High Securit Excerpt: An illegal immigrant hitched a ride on a train from Oceanside to San Clemente California. He fell asleep on the train and ended up INSIDE THE NUCLEAR POWER PLANT AT SAN ONOFRE. Weblog: Blue Star Chronicles Tracked: 08.02.07 - 5:13 pm
Christian radio station forced to include Islam, Hinduism, and Buddhism Excerpt: The question is When is a Christian radio station not a Christian radio station?" Answer: "For the hour or so a day that it must air the views of other faiths to satisfy the CRTC's "balance" policy." (from The Ottawa Weblog: Right Truth Tracked: 08.02.07 - 8:00 pm
What's Barack Obama's shoe size? Excerpt: Might be hard to tell while he has both feet in his mouth. The Democrat presidential candidate has had a rough time of it lately. In the debates he said he would have high level diplomatic talks with rouge regimes. Hillary! was sharp eno ... Weblog: Mark My Words Tracked: 08.02.07 - 8:46 pm
House Explodes Over Illegal Alien Benefits Excerpt: Over 100 Republicans walked out of the House of Representatives last evening after accusing the Democrats of changing the outcome on an important vote that would give welfare benefits to illegal aliens. C-Span described this morning that the vote was ... Weblog: CommonSenseAmerica Tracked: 08.03.07 - 8:38 am
What’s Wrong With the Republicans? Excerpt: Truth and Hope Report Podcast Show Notes. While RNC holds their Summer Meeting and vote for a “throw money at it” solution to poverty, as well as getting tough on immigration (finally), a new study is raising alarm in young Republican ... Posted by Adam Graham at 8/02/2007 10:34 PM
Moderate Islam Is No Islam Excerpt: For the past six months I have been digging into and reporting on various aspects of the US Government. America as a sovereign entity is under attack on many fronts. With the conspiracy of corporate America, the leftist judges, ... Posted by No Apology at Thu Aug 02, 11:09:25 PM
I'm relaxing today Excerpt: As you may or may not know, I am in the process of moving all of my blogs (except DoD Daily News-2) over to this blog. I am doing this because it is just too much work for me to pay as much ... Weblog: Rosemary's Thoughts Tracked: 08.03.07 - 1:09 pm
Muslim Bakery Raided in Oakland Excerpt: I guess this is why the press plays softball with jihad issues.Seven people were arrested on homicide and other charges after police raiding the Your Black Muslim Bakery recovered firearms that they believe were linked to the ambush slaying of Weblog: The Amboy Times Tracked: 08.03.07 - 5:30 pm
Wear Red on Friday Round-Up Excerpt: Link dump and open trackbacks MOSTLY celebrating our fighting forces! HOOAH!!!!! (Other types posts accepted, however). Weblog: Blue Star Chronicles Tracked: 08.03.07 - 7:03 pm