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Author Topic: Right sound for a large bulk carrier  (Read 4517 times)

malcolmfrary

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Re: Right sound for a large bulk carrier
« Reply #25 on: November 15, 2018, 10:28:10 am »

I spend times during the summer on the Swedish west coat just north of Gothenburg. Every so often Wallenius -Wihlmsesen car carriers pass some 500 metrs out and there is a definite "humming" in the air when they are abeam. These are real big ships  But evidently the true sound is very difficult to reproduce in a scale like manner - I have to accept that.


But what abt horns/fog horns?  I do want the deep, reverbating sound from a large ship, not the "merry go round" sounds or steam whistles I have checked on the net. Maybe I can find what I want on you tube and then proceed as explained by Tug Fanatic. I know abt the german Beier Electronics very capable sound module but that has a real hefty price tag and I just want the horn now. So the search goes on...
Claes
Horn sound units are in two separate groups.  Fairly cheap sound generators that produce a mix of tones and just that, or, usually costing rather more, playback units that play back recorded samples, with various levels of control depending on price.  The sampled sounds, being taken from real life, have all of the ambience that the original had.  All of the resonances and echoes of the original is there.  Of course, you only get the benefit of that extra detail if the speaker setup can handle it and if the amplifier driving the speaker can provide the power needed.
One cheap way of using a single sampled sound is to get one of these - https://www.ebay.co.uk/itm/0-5W-30sec-Recordable-Voice-Module-Greeting-Card-Music-Sound-Voice-Talk-Chip-/183096493879?var=
They need a bit of modification to enable them to start on demand, and their output needs feeding to an amplifier that will do the job needed.
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Tug Fanatic

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Martin (Admin)

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Netleyned

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Re: Right sound for a large bulk carrier
« Reply #28 on: November 15, 2018, 04:20:47 pm »

Sitting on the Humber Bank on a still Summer night, the only vessels I hear are the Pilot boats and the prop wash from tankers and bulkers leaving light.
Even the HSC's servicing the wind farms are almost silent apart from the wash.


Ned
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Tug Fanatic

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Re: Right sound for a large bulk carrier
« Reply #29 on: November 15, 2018, 04:27:27 pm »

Interesting! Have you tried / used this one yourself?

No! I just though that it might be a better idea than a greetings card gizmo.

I have tried an M3P players for this purpose but rather more expensive than this. As I have said above it didn't cope well with the big low frequency sounds that these big ships make to my ears.


Funny that the Humber is so different to Felixstowe.
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Colin Bishop

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Re: Right sound for a large bulk carrier
« Reply #30 on: November 15, 2018, 05:16:34 pm »

People's hearing can differ considerably so what one individual can pick up andother cannot as their hearing frequency profile is different. Same with eyesight so you are both probably right.
Colin
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Netleyned

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Re: Right sound for a large bulk carrier
« Reply #31 on: November 15, 2018, 05:38:09 pm »

That's right Colin,
The distance from the channel
the vessels are navigating will
also make a difference.
Ned
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Martin (Admin)

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Re: Right sound for a large bulk carrier
« Reply #32 on: November 15, 2018, 06:23:23 pm »


It's the Matrix hypothesis.

Neo: I thought it wasn't real?
Morpheus: Your mind makes it real.
 
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Colin Bishop

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Re: Right sound for a large bulk carrier
« Reply #33 on: November 15, 2018, 06:51:30 pm »

Stop describing your shirt Martin!

Colin
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Steam Boat Willie

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Re: Right sound for a large bulk carrier
« Reply #34 on: November 15, 2018, 07:46:27 pm »

Interesting! Have you tried / used this one yourself?


Yes, works very well
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malcolmfrary

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Re: Right sound for a large bulk carrier
« Reply #35 on: November 16, 2018, 11:03:57 am »

or alternatively if price matters:


https://www.ebay.co.uk/itm/TF-SD-card-USB-disk-MP3-Decoder-Board-Module-Amplifier-Decoding-Audio-PlayerUK/372196402756?hash=item56a8a26644:g:VWkAAOSwcuZaXdzZ:rk:10:pf:0
 
The greeting card one just needs a momentary connection to the "play" pins and it does its thing.  Does the decoding audio player operate the same way? i.e. a single dab to set it off?  One of my club members has a liking for having his boats produce background music, this could be vastly better than the old walkmans that he has been using, and a lot less messy to use than the dedicated MP3 plays that he has tried.
Somehing in the region of the 3 Watts mentioned should be adequate for many uses on a model boat, but anything like the deep down grumble origially asked for does need serious power.  Not just a hefty speaker, but its own battery.  The sound system could swallow power faster than the models motor.
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