[quote=firealarmveteran15 post_id=81883 time=1538486326 user_id=854]
[quote=DownsLife+Safety post_id=81863 time=1538359980 user_id=4181]
[b]
[list]
[*]Simplex Truealert or Truealert ES or a similar sounding horn[/list]
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[quote=DownsLife+Safety post_id=81863 time=1538359980 user_id=4181]
Some notes for the sounds:
[list]
[*]Sounds should be loud and clear; not distorted.
[*]Excessive background noise should not be heard.
[*]Each device sample should have been used or approved for a fire alarm system.
[*]Each sound sample should at least be coded in temporal 3, continuous, and march time (120 BPM) for at 40 seconds (no less0. A panel or coding device is recommended. Separate sound files for each fire alarm code. DO NOT submit one round of code and expect me to piece it all together.
[*]The following must also include a recording of 90 BPM March Time: [i]60 hz fire horn, single stroke mechanical bell, mechanical horn[/i]. Hand coding is acceptable but inconsistencies with beat/pattern are to be minimized. A coding device is recommended.
[*]The following must also include a recording of cadence march time (4-4-4-4): [i]60 Hz fire horn, single stroke mechanical bell.[/i] Hand coding is also acceptable but inconsistencies in pattern are to be minimized. See @OldSchoolFireAlarm's videos on youtube as a reference if you don't know how to code cadence march time.[/list]
Post your files here. Make sure that they are accessible.
Thank you so much! Your contribution to this science fair project will help to make it a great success to answering my question.
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How am I supposed to post audio files here? At the time of posting this, I don’t have an account with an audio sharing website (such as SoundCloud). Would Google Drive work? Or even YouTube (as an unlisted video)?
I do have recordings of my Simplex TrueAlert horn (4901-9820) in continuous and code 3, the latter made possible via the sync module. I do have a recording of it in “March Time” (via the sync module), but it’s not 120bpm march time (it’s 60bpm; and I don’t have a panel). Unfortunately, the recording I have of the alarm in continuous falls about 5-6 seconds shy of the 40 second requirement, but not the code-3 recording. Fortunately, unlike some SmartSync horn/strobes, the horn-only TrueAlert doesn’t do that “double-buzz” every so often (there’s a slight inconsistency, but I’ve only heard it occur once). There is some background noise (buzzing from the freezer in the “den” of my relative’s house), but it’s more on the quiet side, ditto for the sync module.
Also, “around 400Hz or greater”? I generated a 400Hz tone with Audacity, and it sounded more like this, which, to me, is very high-pitched for a DC electromechanical horn (that video was from 2012, the pitch of that horn has gotten lower nowadays). The frequency range for DC mechanical horns usually range from about 200Hz (4903-9219, low-pitched 2901-9833, etc.) to about 400Hz (high-pitched 2901-9806) (again, I tested this using Audacity’s tone generator).
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Google Drive and a YouTube unlisted link should work.
Your continuous file should suffice. I can modify it if I find it to be too short. I might be able to modify the march time coding too if it sounds realistic enough. You will be fine with your type or background noise
And you’re right @firealarmveteran15 - my bad for not realizing it. Anything between the 200 Hz and 400 Hz range should work.
@NewEnglandElevators thank you so much too!