What are noises we can hear during EVA?

They are like a hammer hitting some metal stuff.

thnks

They used voice-operated mikes in the spacesuits, which sometimes triggers
randomly off the noise of the oxygen flowing into their helmets. The Ku
from the orbiter is often blocked by the ISS structure itself on these
missions. The ISS Ku is blocked less frequently, but the video resolution
is poor from ISS.

"Bruce Palmer" wrote in message
...
BW wrote:
They are like a hammer hitting some metal stuff.

some kind of interference. Where's the damn Ku band video downlink?

"cole smith" wrote in
:

They used voice-operated mikes in the spacesuits...


On this general topic, I know its been mentioned before, but I
really have to repeat the point that in this day and age the
audio quality coming from the spacecraft is really crappy.

One hopes they try harder on this for the shuttle replacement.

On Wed, 3 Aug 2005 09:44:06 -0500, GD wrote
(in article ):

On this general topic, I know its been mentioned before, but I
really have to repeat the point that in this day and age the
audio quality coming from the spacecraft is really crappy.

Compared to previous decades, it's amazingly good. "This day and age"
is meaningless since what you're REALLY saying is, "Compared to my
digital cable TV landline signal or tiny-bandwidth satellite radio
broadcast from high-power dedicated satellites . . ."

Get real - communicating with an object moving 17,500 miles per hour is
HARD - higher bandwidth stuff like real-time color video from suit
helmet-cams makes it harder still.

--
"Fame may be fleeting but obscurity is forever." ~Anonymous
"I believe as little as possible and know as much as I can."
~Todd Stuart Phillips
www.angryherb.net

On Wed, 03 Aug 2005 08:16:15 -0400, Bruce Palmer wrote:

BW wrote:
They are like a hammer hitting some metal stuff.

some kind of interference. Where's the damn Ku band video downlink?

What I wonder is, if they can do broadcast-quality video, howcome
the audio is still such crap? Maybe the crew should all take their
cell phones. ;-)

Cheers!
Rich

On Wed, 03 Aug 2005 10:18:51 -0500, Herb Schaltegger wrote:

On Wed, 3 Aug 2005 09:44:06 -0500, GD wrote
(in article ):

On this general topic, I know its been mentioned before, but I
really have to repeat the point that in this day and age the
audio quality coming from the spacecraft is really crappy.

Compared to previous decades, it's amazingly good. "This day and age"
is meaningless since what you're REALLY saying is, "Compared to my
digital cable TV landline signal or tiny-bandwidth satellite radio
broadcast from high-power dedicated satellites . . ."

No, what we mean is "compared to a 4.5MHz bandwidth broadcast-quality
video with about a 60 dB S/N ratio."

Get real - communicating with an object moving 17,500 miles per hour is
HARD - higher bandwidth stuff like real-time color video from suit
helmet-cams makes it harder still.

That's the point - why don't they just put audio on a subcarrier of
the video or something, so it can _sound_ as good as the video _looks_,
like at least as good as an ordinary TV station.

Or is the space station really that noisy?

Thanks,
Rich

I think you will find they are the vox and noise gate in the comms unit. Ie,
the voice activates the comms, but the sounds inside the suit, being
constant, are ignored by the system, and a gradual fade out law is applied
so there are no abrupt stops in the comms.

If you want to play with this ort of thing, most sound editors have noise
gates you can play with.

Brian
"BW" wrote in message
...
They are like a hammer hitting some metal stuff.

thnks

You want real quality audio you would have to send a pro sound mixer
(person) with equipment into orbit and let him turn off all the cooling
fans on the space station and the orbiter, maybe some sound blankets
and whip out his $5k microphone.

And no the video isn't 'broadcast quality' unless you mean reality tv,
America's funniest home video type quality. The NASA guys do an awesome
job for what they're trying to do but don't confuse the in orbit stuff
with professional video production.

-McDaniel

Rich Grise wrote:
On Wed, 03 Aug 2005 08:16:15 -0400, Bruce Palmer wrote:

BW wrote:
They are like a hammer hitting some metal stuff.

some kind of interference. Where's the damn Ku band video downlink?

What I wonder is, if they can do broadcast-quality video, howcome
the audio is still such crap? Maybe the crew should all take their
cell phones. ;-)

Cheers!
Rich

Why do all the CIA trolls use fakey Jewish names?

Thanks,

Rick


Herb Schaltegger wrote:
On Wed, 3 Aug 2005 09:44:06 -0500, GD wrote
(in article ):


On this general topic, I know its been mentioned before, but I
really have to repeat the point that in this day and age the
audio quality coming from the spacecraft is really crappy.


Compared to previous decades, it's amazingly good. "This day and age"
is meaningless since what you're REALLY saying is, "Compared to my
digital cable TV landline signal or tiny-bandwidth satellite radio
broadcast from high-power dedicated satellites . . ."

Get real - communicating with an object moving 17,500 miles per hour is
HARD - higher bandwidth stuff like real-time color video from suit
helmet-cams makes it harder still.

Or fakey scottiswh names?

(Gootsa Savendme soom buooks..)

Thanks,


Rick



wrote:
You want real quality audio you would have to send a pro sound mixer
(person) with equipment into orbit and let him turn off all the cooling
fans on the space station and the orbiter, maybe some sound blankets
and whip out his $5k microphone.

And no the video isn't 'broadcast quality' unless you mean reality tv,
America's funniest home video type quality. The NASA guys do an awesome
job for what they're trying to do but don't confuse the in orbit stuff
with professional video production.

-McDaniel

Rich Grise wrote:

On Wed, 03 Aug 2005 08:16:15 -0400, Bruce Palmer wrote:


BW wrote:

They are like a hammer hitting some metal stuff.

some kind of interference. Where's the damn Ku band video downlink?

What I wonder is, if they can do broadcast-quality video, howcome
the audio is still such crap? Maybe the crew should all take their
cell phones. ;-)

Cheers!
Rich