musical automotive horn

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awneil wrote:

Pope_Gregory_IX wrote:
 easier for the human ear to position than the old two-tone siren.

really?

 

I find quite the opposite - the wailing sound is extremely difficult to position

Human ear, Andrew, not feline ear.

 

Good to have you on board, Pope_Gregory_IX. Looking forward to some of that legendary infallibility. Are you keeping up the chanting tradition these days?

 

Quebracho seems to be the hardest wood.

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John_A_Brown wrote:
Looking forward to some of that legendary infallibility

 ... and, hopefully, not too much bull !

 

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I find quite the opposite - the wailing sound is extremely difficult to position

I expect this is environment-dependent.  In an urban setting with large, tall buildings, highly sound-reflecting facades, there is a great deal of multi-path sound through which the listener must localise the source.  Different frequencies will result in different 'computed' source positions based on the listener's position w.r.t. additive and destructive interference of the various paths for that frequency.  The rapid 'burp-chirp' component to the sirens in emergency vehicles where I live are perhaps an attempt to minimise that kind of 'phantom' localisation...?  ... by rapidly (over a few ms) and repeatedly sweeping across a range of frequencies.

 

A wild guess.

 

Unless, of course, the proposed melody is "One note Samba".

 

 

And yes, I do understand that there is, in reality, more than one note in that song.

Many :)

https://www.amazon.fr/Statlers-Julie-Michels-Kevin-Barrett/dp/B0047EWEPY

 

The lyrics are not irrelevant to this thread:

...

There's so many people who can talk and talk and talk
And just say nothing or nearly nothing
I have used up all the scale I know and at the end I've come
To nothing, or nearly nothing

...

;-)

"Experience is what enables you to recognise a mistake the second time you make it."

"Good judgement comes from experience.  Experience comes from bad judgement."

"When you hear hoofbeats, think horses, not unicorns."

"Fast.  Cheap.  Good.  Pick two."

"Read a lot.  Write a lot."

"We see a lot of arses on handlebars around here." - [J Ekdahl]

 

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John_A_Brown wrote:
unless things have changed dramatically over the past 50 years, [car horns] are simple "vibrator" [..] devices with a diaphragm

They are, AFAIK. At least on newish Volvos..

 

John_A_Brown wrote:
natural period of oscillation

Snigger... ;-)

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JohanEkdahl wrote:
Snigger... ;-)

 

Image result for ooh err missus Image result for titter ye not

 

Top Tips:

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  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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JohanEkdahl wrote:

John_A_Brown wrote:
unless things have changed dramatically over the past 50 years, [car horns] are simple "vibrator" [..] devices with a diaphragm

They are, AFAIK. At least on newish Volvos..

 

John_A_Brown wrote:
natural period of oscillation

Snigger... ;-)

I purposely let that one go, Johan, as for some reason I thought the predominantly American user base of this forum referred to that particular cycle as a full stop.

 

Quebracho seems to be the hardest wood.

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