And in flight simulation, movement of the simulator’s hydraulic or
electric-driven motion platform adds another aspect to the timing problem. When
a pilot moves the control wheel or rudder pedals he expects to see a change in
his instruments, a change in the view out the cockpit windows, usually
Hal Murray writes:
> Are people sensitive to the sound being early?
There has been quite a lot of research on that, but I have not followed
it for many years.
The overall situation is that if the sound arrives before the visual event
the brain gets quite confused, but it can arrive and
On 1/2/2022 1:17 PM, Lux, Jim wrote:
I watched a Titan IV launch from about 10km away. You saw the ignition, a
5-10 seconds later you felt the ground shaking, and the rocket was maybe
300-400 meters up and hitting the scattered clouds before the sound got to you
30 seconds later, and then you
Hi. (former) Movie projectionist here. Some comments on multiple messages
inline below:
Hal Murray wrote on Sun, 2 Jan 2022
at 12:57:24 EST in
<20220102175724.6d8ab28c...@107-137-68-211.lightspeed.sntcca.sbcglobal.net>:
> How far off does the audio have to be before it doesn't look/sound
> ri
On 1/2/22 12:39 PM, Peter Vince wrote:
I used to work in broadcast television, and find that most people would
notice a couple of "frames" (80ms here in the UK) - we, trained and looking
for it, would notice one frame (40ms). But it is more disturbing if the
sound is early, as that is so unnatu
On Sun, 2 Jan 2022 at 17:57, Hal Murray wrote:
>
>
> How far off does the audio have to be before it doesn't look/sound
right? How
> accurately does the typical movie process get things aligned?
I used to work in broadcast television, and find that most people would
notice a couple of "frames"
On 1/2/22 9:57 AM, Hal Murray wrote:
j...@luxfamily.com said:
So the *sound* of the clap has to propagate to the sound recording equipment
(some ten miliseconds away if the mic is on a fishpole or boom).
How far off does the audio have to be before it doesn't look/sound right? How
accurately
>
>
>
> How far off does the audio have to be before it doesn't look/sound right?
> How
> accurately does the typical movie process get things aligned?
>
> Are people sensitive to the sound being early?
>
Pretty sensitive, I think. We forgive a lot of poor lipsync on youtube or
live TV but we of
j...@luxfamily.com said:
> So the *sound* of the clap has to propagate to the sound recording equipment
> (some ten miliseconds away if the mic is on a fishpole or boom).
How far off does the audio have to be before it doesn't look/sound right? How
accurately does the typical movie process ge
There was a time ball at the entrance to Lyttleton Harbor, NZ. It was
damaged in the earthquakes there, but it looks like the community funded
the reconstruction of the tower and ball mechanism. I always looked
forward to seeing it at the closure of a long cruise (Antarctica).
https://en.wikiped
On 1/1/22 8:48 PM, Tom Van Baak wrote:
Hal Murray wrote:
> where do you get the time?
The new years celebrations last night remind me of another source of
time: time balls.
Although a bit of nostalgia these days or even a joke, time balls were
clever, precise, and a critical part of naval in
Thanks for that, an enjoyable lecture !
Does anyone know more about the question at 1:05:50 - a difference between
GMT and 'London time' used by airlines ? The questioner seemed sure it
wasn't daylight savings, but I live only half a degree east of the meridian
and am not aware of any other timez
What a project!
86,400 x 16 foot columns spaced 3” apart arranged on a cylinder 3.9 miles in
diameter with bigger balls for minutes and bigger still for hours.
Magical, and almost as grand as the 10,000 year clock.
I will raise a Kickstarter Project immediately ...
Seriously though, a small tw
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