what if the medical examiner is black?
Exactly.
what if the medical examiner is black?
Then he is probably a product of affirmative action and not very good.
exactly.
what if the ME is white....and lives in that gated community?
Cobra- I take issue with this so called audio expert who was not contacted by the FBI to examine the audio & then went to the press with his findings…I don’t even know what type of equipment he uses…He has a magic box that tells you who is speaking? WTF is that all about?…DA work stations are interactive…The computer does not know what you are looking for… I am proficient with Sonic Solutions No Noise, Cedar DNF, De Crackle, De click, De hiss and I am in the process of learning “isotope”. Which is a plug in for Pro-Tools DAW…This is the same equipment used by the FBI, recording technicians for the film & record industry & JPL in Pasadena California… The reality is that none of you picked up on this guy’s main flaw…What source or copy did he use?
I need the original tape & recorder or video camera that this was made on…Other wise the project is compromised from the start….Even just one copy can alter the audio restoration and recovery process…I may spend an entire day working with a tape deck engineer loading the audio into a digital audio work station…I would load the audio onto different hard drives with the highest quality A/D converters at the highest sampling rate possible…What did this guy use? A poor quality recording he copied off the news?
The recovery process is labor intensive…You spend all day crunching numbers, (Q/factor) there is no fun in it at all…There is no money to be made on high profile projects such as these…My employer needs to take me out of the loop for a month and eats the cost of that…
When I am done I do not want to go public, let the police, FBI & department of justice do the explaining…Nobody knows what is actually on these recordings and somebody is always pissed off about the final analysis…I once worked on a high profile police beating case…There were several eye witness’s who testified that the police were laughing & yelling racial slurs at the motorist they were trying to subdue…I worked with another person on this project for a month & provided a transcript…After removing things like the night ambience, car motors, etc ours was the most pristine dialogue presented to the prosecution…The enhanced audio showed that the police were not laughing or yelling racial slurs, it was the motorist doing those things…People were pissed and even suggested that we altered the tapes…You think I want e Lee giving out my name & address? There are other projects I have worked on including retrieving dialogue from a tape that was bulk erased…We got what they were looking for & the prosecution put away a bad guy for a long time…You think I want to have his family know who I am, where I live? This guy who claims to have examined the Zimmerman 911 has an agenda…
I'm glad you finally decided to weigh in on this one SC...I knew you could bring some actual facts to the speculation...
Then he probably is a racist bigot and will lie to protect Zimmerman.
Well, I had considered that, but I didn't think my assumptions would matter. My assumption is that they used the WAV files from the Police Department web site, rather than the mp3 and others smaller files from other sites. I figured this expert would refuse anything digitally compressed. I think most people fail to understand how much can be lost with compression.
That's more than I realized. I know that without having a baseline sample of the send to receive path, that there is compromise in that aspect. I didn't expect the testing to be compromised by using different recording/playback equipment.
Yes, I was su ious of this guys motives as well. I agree with the "15 minutes of fame."
How difficult is it to determine a match from a decent voice sample comparing it to a muffled yell for help that we heard? I completely agree with voices being unique, but when it changes from talking, to singing or yelling, I don't see how anyone can expect to claim a match. Add that to the recording coming from different end to end equipment that hasn't had control samples recorded, and I see this guys claim as pure bull .
I learned about the voice and digital processes some years back, when someone I know was working on a method on compressing voice audio more than normal. He was in effect, having the software reverse engineering the way we speak. His results were to digitize what it takes to speak, rather than the actual audio. It gets pretty complex, but the end result was pretty cool.
Hmmm. Aren't all calls pretty much compressed?
Cell phone calls I believe are, which adds to the problem. I don't know how much, but under all the variables, I find it completely laughable that anyone would expect a 90% match between the known Zimmerman recording, and the recordings with the screams.
Like most things, the quality is no better than the weakest link. Cell phones are probably the weakest link for these recordings. I believe the compressed data is 9.6 kbit during transmission.
Last edited by Wild Cobra; 04-03-2012 at 01:59 AM.
Retrieving / enhancing audio is boring, tedious work…Create filters to dissect the information you want to remove without losing the dialogue you want to keep….
http://www.sengpielaudio.com/calculator-bandwidth.htm
I went to the Easy Voice Biometrics website to see how their stuff works and admit to being clueless about this software….I don’t even know what computer / audio work station it works with…The waveform display looks crude http://easyvoicebiometrics.com/
Obviously these two audio experts Tom Owen and Ed Primeau know what they are doing I just don’t understand the motive for going public with their work…I would think that Trayvons mother could tell whose voice is crying for help on an enhanced recoding…
Forensic Voice Expert: Trayvon Martin Was the One Screaming for Help on 911 Tape
http://www.alternet.org/module/print...ndviews/875450
"I would bet my money on the screaming being Trayvon's voice. Unless Zimmerman never left puberty that is just too high pitched to be a grown man's voice."
Z fits the profile of less/balless NRA gun fetishist assholes who subs ute guns for their absent manhood.
I know nothing about this stuff so the info you're giving is pretty interesting.
As to the last point, I think Trayvon's mother has already said it was her son on the recording. I believe her even others might not.
Exactly.
Actually, the fact that he's a coward is probably what bugs me the most.
If I made myself the watchdog of my neighbourhood and started doing regular patrols while carrying a loaded gun, ran into a suspect, shot them playing hero, and it turned out I was wrong - I would be HORRIFIED. I'd be apologizing and not running away even if it meant going to jail for my mistakes.
But this guy's demeanour on that video coupled with his going into hiding for fear of his life (hypocrite), just rubs me the wrong way. I hope his parents file a civil suit no matter what happens here.
It's weird though. I mean, I was in a farming community for a while and just about everyone we knew had one or two guns. It's definitely possible to be safe even if practically everyone has a gun... Maybe the problem is people who have some training but no respect for their weapons? I don't know.
I hear you.
If you're innocent show your face and profess it. Show your wounds and broken nose. Defy. , if I know I was innocent I would be on tv defending my honor any chance I can.
He knows it was a ed up deal.
Wannabe cop meets wannabe thug. Huge misunderstanding. One gets his ass beat the other gets shot. No winners here.
The technology behind it it's called "Speaker recognition" (not to be confused with Speech recognition). And when two samples of the same person are used, you're doing authentication (as opposed when you're simply trying to determine whose voice is it, which is called identification).
The process goes back 25+ years (maybe more) and with the advent of more processing power, new algos have augmented it. It's based on a bunch of statistical algos, like mixture models, HMM (basically a dynamic bayesian network), decisions trees, and a few more I can't remember off the top of my head. The very, very top ones also include neural networks.
The main issue with these systems is basically signal to noise. Ambient sound being a major issue.
... I would mostly agree, except I doubt Martin was a "wannabe" thug.
Teenage boys are teenage boys though. All the testosterone and none of the sense. , I don't know how *I* would have reacted if someone was so obviously following *me* through my neighborhood. I would have called the police.
Maybe if Trey had called them instead of his GF.
Anyways, I am with you about this. One is dead and the other has essentially forfeited any normal life he might have.
Hopefully the investigation will make things a bit clearer.
Exactly. Instead he has family members coming up and giving second-hand information. The other thing I don't like is the assumption that because Trayvon may have started beating him in a fistfight that Zimmerman is automatically the victim and its alright for him to use lethal force on a minor. That's clearly the strategy that Zimmerman's lawyer and father are going for to get public support.
That's boderline racist and I'm starting to think that a lot of the people defending Zimmerman are really defending their right to react the same way if they're ever in a similar situation. It's frightening how so many people (here and on other forums) are tripping over each other in an attempt to justify this. Make Trayvon Martin into Tina Martin and I'll bet these same people would be howling about how Florida's justice system has fallen apart. Sickening.
I'm going to assume you're not a "typical not wealthy black person". For many of them, particularly black males, calling the police is a last resort. He was almost home and he probably didn't think that he'd get shot in a gated community. Also, he might've ducked into the side walk area originally to keep Zimmerman from knowing where he lived since he had his little brother there.
He was on the phone with his girlfriend the whole time. It's not like he ran and then gave her a call.
Zimmerman chose his own situation. Thanks to his decisions a teenager has died for no reason. The 911 calls pretty much confirm it and the one with the screams shows, to me, that he likely pulled the trigger because he was angry not because his life was in danger. Like I said, I honestly hope the parents launch a civil suit. They could fund a charity in honour of their son with that money.
You know we cool, homie, but you got it twisted on this issue. By the time Z had a chance to speak his mind...the media already doctored the 911 call. The media was already reporting it was a WHITE dude that shot a BLACK boy in a gated community (they made it seem like it was an actual gated community, with big ass houses and ). The media already started acting like it was clear cut when obviously there's all kinds of gray...and you want Z to come out of hiding, say he's innocent, and expect that the negro militants casing him out will be satisfied and allow "due process?" nah, that's suicide. Z was tried in the court of public opinion, basically sentenced to die, and JUST NOW is the media starting to back track and actually look at the facts.
If someone shot your kid or family member, and the media incriminated them like they did Z, I wouldn't blame you for taking that person out the first chance you get...but in this case, you'd have been wrong and murdered a dude that isn't the cold-blooded racist killer white-man you thought he was. Wanna be cop meets wannabe thug...that's how the cookie crumbled, ya hur me?
You probably mean iZotope... Are you learning their RX2 advanced tool? I've heard really good stuff about it.
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