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Author Topic: Master Alarm Sound  (Read 7566 times)
Bunyap
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« on: January 29, 2010, 07:04:42 PM »

This is one of a few "odds and ends" I have going.  The attached sound file should be pretty close to the CSM master alarm tone (alternating 750 htz / 2000 htz). 

If you would like to check it out replace the "alarm.wav" file in Sound/Project Apollo with the attached file.

* alarm.zip (6.53 KB - downloaded 1630 times.)
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kneecaps
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« Reply #1 on: January 30, 2010, 02:40:09 PM »

Hi,
   Where did you find the specs for that alarm tone? Sounds more like the Shuttles Class 3 SM alert...

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"Okay. As soon as we find the Earth, we will do it."
- Frank Borman, Apollo 8

Current Work: ?? What next??

Future Work:
I know the AGC pretty well so anything need doing there?

On Hold/Completed:
SPS TVC in P40 issues.
P11 FDAI Error Needles (98%) complete. Comitted. Working A7 scenario.
P06 AGC Standby. Concluded. It's done by the AGC PSU.
Got us a complete AOH Volume II
Bunyap
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« Reply #2 on: January 30, 2010, 03:20:18 PM »

Yeah, it definitely sounds familiar.  I have been going through whatever onboard recordings I can find to try to pick it out and confirm its the right tone...

The spec is from the AOH Caution and Warning section:  "The output signal from the tone generator is a square wave that is alternately 750 cps and 2000 cps, changing at a rate of 2.5 times a second".
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Tschachim
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« Reply #3 on: February 02, 2010, 09:52:41 AM »

Great, thanks for pointing that out, I never realized that the Master Alarm sound was wrong!  Thumbs Up

Change is in CVS, a code change was necessary, too, as the old code was switching the sound on and off and the new sound is a loop. So you need to wait for new beta modules or, after a CVS update of the Orbitersdk and Sound folders, you need to recompile the modules or the new alarm will sound a little bit strange.

Now I really need to get used to the new sound after 5 years training with the wrong one...  Wink

Cheers
Tschachim

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Swatch
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« Reply #4 on: February 02, 2010, 10:22:47 AM »

This is almost one change I wish we could have as 'optional'  The new sound may be accurate, but its rather more annoying than its inaccurate counterpart (hard to believe, I know). Happy   Also, I think the old sound came from the movie Apollo 13, so some people may associate with it easier.
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My Project Apollo Work:
CM Visual
 -VC (~75% complete: texture work beginning again; mesh-78%; texture-70%)
Propulsion Particle Improvements (Focused on S1B right now, BETA 1.0 has been commited)
New Docking Method (~50% complete: research complete; coding partially completed, testing not underway)

Future Work:  (if it's here, it's deemed unnecessary to upcoming release)

Older Work:  (if it's here, it's fair game to whoever wants to improve)
EMS Implementation (committed: minor flaws, but groundwork is there, needs extensive testing)
EMS scrolls (committed: not refined, but usable)
SM Visual (committed: mesh-finished, texture-60%; possibly revisited in future)
J2 Texture (commited: room for improvement)
LRV (committed: mesh-finished, texture-90%; in future a ground up rebuild may be in order, but not on my plans)
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