III - THE METHOD OF VOICE IDENTIFICATION:
"The first step is to evaluate the recording of the unknown voice, checking to make sure the recording has a sufficient amount of speech with which to work and that the quality of the recording is of sufficient clarity in the frequency range required for analysis. The volume of the recorded voice signal must be significantly higher than that of the environmental noise. The greater the number of obscuring events, such as noise, music, and other speakers, the longer the sample of speech must be. Some examiners report that they reject as many as sixty percent of the cases submitted to them with one of the main reasons for rejection being the poor quality of the recording of the unknown voice"
Link:
http://www.owlinvestigations.com/article1.html
Was this man doing it out of civic virtue or was he hired to do this analysis?
2. She was talking most of the time on the recording.
3. When she wasn't talking, the 911 operator was talking.
4. When she and the 911 operator weren't talking, a male in the apartment was talking
5. When she and the 911 operator and the male weren't talking, someone kept running into, moving, or dropping things. (one of the noises was so loud that many people thought it was another gunshot)
6. The person is hysterically screaming, fearing for his life. On the previous 911 calls, Zimmerman is speaking slowly and softly.
7. The eye & ear witness, John, whose apartment IS directly behind the event scene, says to the cops (that night)and the reporters (the next day)that he SAW Zimmerman screaming for help, He HEARD Zimmerman screaming for help, He told Trayvon Martin TO STOP!
8. Originally, Trayvon’s parents said it was not Trayvon screaming for help.
9. Zimmerman's father, brother, and friend all identify the voice as George Zimmerman.
10. The witness, John, who knows George and says he sees him almost every day, that it was George screaming.
WHAT MORE DO YOU NEED? To know that these two expert stooges couldn't possibly be correct that the voice is Trayvon.
SECONDS after the shot, John the eyewitness, saw Trayvon dead on the ground, not saying anything, ever again.
see video upper left corner. Notice the date. 2/27/12 the next day!
http://www.myfoxorlando.com/dpp/news/seminole_news/022712-man-shot-and-killed-in-neighborhood-altercation
The examiner can only work with speech samples which are the same as the text of the unknown recording. Under the best of circumstances the suspects will repeat, several times, the text of the recording of the unknown speaker and these words will be recorded in a similar manner to the recording of the unknown speaker. For example, if the recording of the unknown speaker was a bomb threat made to a recorded telephone line then each of the suspects would repeat the threat, word for word, to a recorded telephone line. This will provide the examiner with not only the same speech sounds for comparison but also with valuable information about the way each speech sound completes the transition to the next sound.By Owens' own standards, these recordings are not suitable for analysis.
There are those times when a voice sample must be obtained without the knowledge of the suspect. It is possible to make an identification from a surreptitious recording but the amount of speech necessary to do the comparison is usually much greater. If the suspect is being engaged in conversation for the purpose of obtaining a voice sample, the conversation must be manipulated in such a way so as to have the suspect repeat as many of the words and phrases found in the text of the unknown recording as possible.
The worst exemplar recordings with which an examiner must work are those of random speech. It is necessary to obtain a large sample of speech to improve the chances of obtaining a sufficient amount of comparable speech.
And I'm not sure why anybody would weigh it more heavily than the testimony of an eyewitness who both saw and heard that it was Zimmerman.