Thanks, Greg. I got to the plot by using View|Graph|Engine Noise
Level. It is certainly easier to read, but it brings up a new
question.

On tow I have an average noise level of 200. Off tow the noise level
goes to 30. Then I lowered the gear, and the noise level rose to 100.
The tow and the gear lowered sections are colored purple (meaning
Engine/Tow) if you select "GPS Status" for coloring. This is all fine.
However, just prior to landing I lower the gear and starting using
spoilers. The average noise is now 150 - but this section is colored
green, not purple, if you select "GPS Status" for coloring.

Something is inconsistent.

-John

On Jun 9, 1:28 pm, Greg Arnold wrote:
Bring up the graph of altitudes in SeeYou, and click on "engine noise
level." It will plot sound on a graph. Much easier to read.

On 6/9/2010 9:58 AM, jcarlyle wrote:

I checked my last flight, too. It's from my LS8.

When I select "Engine Noise Level" in SeeYou V3.95 all that appears to
be shown is a green trace. Close inspection of the barograph trace
under high zoom does show a 4 second red dash and a 4 second yellow
dash when the tow plane revs up and a 16 second red dash during
landing roll out on grass. The tow portion of the tracemay have a
slightly yellower color, but it's really hard to say.

However, when I select "GPS Status" I see a purple trace (which SeeYou
labels "Engine/Tow") during the period I was on tow, another purple
trace during the period I was thermalling with my gear down (during a
low save), but a green trace during the period my gear was down and
the spoilers were out just prior to landing. There is no level shown
in "GPS Status" - just "GPS Bad", "Engine/Tow", GPS OK", "Circ. Left
and "Circ. Right".

Seems to be curious behavior, especially if OLC is counting on it for
scoring. It's unclear whether it's due to SeeYou or my Volkslogger.

-John

OLC may use noise level to help determine when you are on tow.

On SeeYou, the noise level on my flights drops noticably when I retract
the gear, as you would expect. However, it also drops when I get off
tow. I suspect that the recorder can pick up the noise of the towplane.
Or the slower speed off tow reduces wind noise, though the noise level
on tow still is noticably higher than on a final glide flown at towing
speed.

I am looking at my most recent flight. When I got off tow, the noise
went from 60 to 40 on the y axis of the SeeYou noise graph (it went from
250 to 60 when I retracted the gear).