3 ms·

How on earth could a web page receiving push notifications over cellular or WiFi in a crowded stadium and then playing audio over Bluetooth have consistently lo

How on earth could a web page receiving push notifications over cellular or WiFi in a crowded stadium and then playing audio over Bluetooth have consistently lower latency than a walkie-talkie? What kind of slow walkie-talkie were they using? I'm also surprised that all you need to define the strike zone is two heights which are pre-determined per player. I guess I assumed you would need to track the batter's actual knees and torso to define it dynamically. If this is really being used by the actual umpires, wouldn't that be important to get right?

culturestate 6y ago
I haven't messed with this but I'd guess they couldn't have the walkie-talkies transmit continuously for whatever reason, and the short delay between the time you "push the button" on a walkie-talkie and the time it actually starts transmitting was the problem. > I'm also surprised that all you need to define the strike zone is two heights which are pre-determined per player The strike zone is determined when the batter first gets set in their stance so that batters can't shrink the zone after the pitcher starts their motion. If you watch, you'll notice a lot of guys crouch when they start to load up and step in the bucket, so there can be a huge difference in the apparent strike zone from the time a pitcher lets the ball go to the time the ball arrives at the plate.
- modeless 6y ago
  Sure, but their starting stance could still change from day to day or even pitch to pitch, couldn't it? Fixing the strike zone at the start of the season seems like a rule change to me.
  - culturestate 6y ago
    Technically you're right, but the differences would be so small that I can't imagine they would materially change the zone. The mechanics of a batting stance and swing aren't something you really want to screw around with once you've got them figured out. I haven't played organized baseball in 10 years, but having played for a long time before that my body still automatically does its thing when I pick up a bat.
- ec109685 6y ago
  This system seems to pre-assign the strike zone for each player, regardless of current stance.
  - deleted 6y ago
    [deleted]
  - culturestate 5y ago
    Your stance doesn’t really change over the course of a season, though. You might open or close it (adjust the angle of your body relative to the axis between the mound and the plate) but you wouldn’t normally make large enough changes that your strike zone would suddenly be e.g. two inches taller. That’s as much for your brain as it is for your mechanics; over time you get to know where your zone is in 3D space, and having to re-learn that is painful.
nerdbaggy 6y ago
Past life I have deployed high density WiFi networks. Most likely they will have a dedicated access point pointing toward the ump. With a proper channel plan I don’t see why there would be any issues. And it looks like they did switch to wired headphones luckily. 2.4 is a mess in high density environment.

culturestate 6y ago

I haven't messed with this but I'd guess they couldn't have the walkie-talkies transmit continuously for whatever reason, and the short delay between the time you "push the button" on a walkie-talkie and the time it actually starts transmitting was the problem. > I'm also surprised that all you need to define the strike zone is two heights which are pre-determined per player The strike zone is determined when the batter first gets set in their stance so that batters can't shrink the zone after the pitcher starts their motion. If you watch, you'll notice a lot of guys crouch when they start to load up and step in the bucket, so there can be a huge difference in the apparent strike zone from the time a pitcher lets the ball go to the time the ball arrives at the plate.

modeless 6y ago
Sure, but their starting stance could still change from day to day or even pitch to pitch, couldn't it? Fixing the strike zone at the start of the season seems like a rule change to me.
- culturestate 6y ago
  Technically you're right, but the differences would be so small that I can't imagine they would materially change the zone. The mechanics of a batting stance and swing aren't something you really want to screw around with once you've got them figured out. I haven't played organized baseball in 10 years, but having played for a long time before that my body still automatically does its thing when I pick up a bat.
ec109685 6y ago
This system seems to pre-assign the strike zone for each player, regardless of current stance.
- deleted 6y ago
  [deleted]
- culturestate 5y ago
  Your stance doesn’t really change over the course of a season, though. You might open or close it (adjust the angle of your body relative to the axis between the mound and the plate) but you wouldn’t normally make large enough changes that your strike zone would suddenly be e.g. two inches taller. That’s as much for your brain as it is for your mechanics; over time you get to know where your zone is in 3D space, and having to re-learn that is painful.

nerdbaggy 6y ago

Past life I have deployed high density WiFi networks. Most likely they will have a dedicated access point pointing toward the ump. With a proper channel plan I don’t see why there would be any issues. And it looks like they did switch to wired headphones luckily. 2.4 is a mess in high density environment.