Figure 1 - Gray Audograph Recording Disk
The recording start point and playback start point ran from the inside outward and it appears that there was no speed or record position compensation on this machine, or at least on the machine deployed by the Dallas Police Department. We are not claiming to be experts on the Gray Audograph machine. We felt it prudent to use the most original Channel 2 recording available at this time. And the most authentic recording available was produced by Dallas Police Officer J.C Bowles days after the assassination (1).
This copy of the Channel 2 audio still exhibits the characteristics of the Gray Audograph machine. At the beginning of playback the audio is compressed or sounds like chipmunks talking on radios. Toward the end of the recording the audio is decompressed to a rate closer to real time, or slightly slower than real time. We approached the Channel 1 alignment problem by synchronizing a central cross-talk event. That cross-talk event would be the "I'll Check it" communication made by Officer Decker to Officer Fisher just before Dispatch announced the time of 12:30.
By using this central cross-talk event for the purpose of synchronizing Channel 2 with Channel 1 we then deployed a mathematical decompression hypothesis to determine the polynomial trend for audio alignment. We attempted to confirm this polynomial trend of alignment but found a drastic difference that can only be explained by stating that up to 60 seconds, maybe more, of audio time on Channel 1 appears to be missing.
What we Expected to find
Figure 2 (explanation of this graph in next chapter)
What we Actually Found
Figure 3 (explanation of this graph in next chapter)
We will explain the significance and methodology of the graphs in greater detail in following chapters of our analysis. But to briefly explain the drastic difference in our mathematical expectations versus the mathematical reality the Gray Audograph recording, used on Channel 2, by being compressed as compared to Channel 1 should have resembled the 1st graph above. At the sync point of the cross-talk event "I'll Check It" one would expect to find other cross-talk events much later in Channel 1, as compared to the compressed time of the origin of the cross-talk in Channel 2. We found that to be the case with the first cross-talk event after the sync point but all other cross-talk events where not where they should be.
