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APPENDIX F POSSIBLE FURTHER STUDIES
Pages 92-112

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From page 92...
... 2. With the information on the timing of the Channel I recording provided by the cross correlation between Channels I and II discussed in Section IV, the Channel I recording could be examined more carefully for the existence of possible shots in the portion of the recording that corresponded to the time of the assassination (between 65 and 95 seconds on use the print version of this publication as the authoritative version for attribution.
From page 93...
... use the print version of this publication as the authoritative version for attribution.
From page 94...
... use the print version of this publication as the authoritative version for attribution.
From page 95...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F Figure 1.
From page 96...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F Figure 2.
From page 97...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F 97 Figure 3.
From page 98...
... Composite photograph of sound spectrograms on each of Channels I and II, with Channel I being the upper sound spectrogram and Channel II the lower. The audible "...hold everything..." phrase begins at approximately zero on both channels, but there is no special significance to the exact location of zero time on either channel.
From page 99...
... Please APPENDIX F 99 use the print version of this publication as the authoritative version for attribution. Figure 5.
From page 100...
... Cross correlation between "Hold everything..." segments of Channels I and II sound spectrograms with time scale slightly compressed to produce the best correlation peak. The curve is produced by sliding 2.50 secs of Channel I along 10.00 secs of Channel II, 0.01 sec at a time, using frequencies in the band 600–3500 Hz.
From page 101...
... Cross correlation between "You want...Stemmons" segments of Channels I and II sound spectrograms with time scale slightly compressed to produce the best correlation peak. The curve is produced by sliding 2.50 secs of Channel I along 10.00 secs of Channel II, 0.01 sec at a time, 101
From page 102...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F Figure B-1.
From page 103...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F Figure B-2.
From page 104...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F Figure B-3.
From page 105...
... Channel I spectra on top, Channel II below. Note the Channel II brief tone at "C" reflected faithfully in Channel I, while the Channel II brief tone at "B" is suppressed by the Channel I heterodyne beginning at "A".
From page 106...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F Figure B-5.
From page 107...
... Note the Channel II brief tones at 32.00–32.08 and 32.24–32.43 secs, and the interaction in Channel I spectra with the Channel I heterodyne at 32.03–32.17 secs. (Care must be taken to avoid confusing the Channel I reproduction of the Channel II brief tones with the more conspicuous Channel I tone that is 250 Hz higher in frequency.
From page 108...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F TONE window is delimited by the vertical bars (for which space has been made in the plot)
From page 109...
... Please use the print version of this publication as the authoritative version for attribution. APPENDIX F receiver and not added later.
From page 110...
... Strip charts of Channel II sound level as a function of time in Channel I seconds from minus 10 to 117 seconds.
From page 111...
... Strip charts of Channel II sound levels as a function of time in Channel I seconds from 118 to 200 seconds.
From page 112...
... Time correction factor for measurement of intervals on the tape recording of Channel II, obtained directly from the original Gray Audograph record. The correction factor is a function of the location on the record and tape.


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