|
Log in to post
|
Print Thread |
|
|
|
|
|
Off-Topic
|
Joined: Jan 2010
Posts: 1,492
Expert
|
Expert
Joined: Jan 2010
Posts: 1,492 |
Quote:
But filmed with a 24 fps camera. I think it wouldn't appear to wave in the camera as it would be filmed in the same position each time.
I guess that would depend on synchronizing the camera to start just before the deviation starts. And even then I'm not sure about it. The reason is the mass of the string, it's kinetic energy, and inertia. But in an ideal universe: Yes.
Guido
Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build
|
|
|
|
|
|
|
|
|
|
|
|
|
Off-Topic
|
Joined: May 2000
Posts: 22,648
Veteran
|
|
Veteran
Joined: May 2000
Posts: 22,648 |
To add to an already academic conversation; that was cool!
Wonder how much effect the scientifically exact application duct tape mattered?
The duct tape holding the hose to the speaker was a limiting factor on the hose movement at times. I was amazed at how quickly the hose calmed down (if this video is accurate) at the very end, once the sound was shut down. Water weight must dampen it (?)
Yet another example of duct tape and WD-40.
If it won't stay put; duct tape it.
If it stays put and you don't want it to, WD-40 it.
I do not work here, but the benefits are still awesome
Make your sound your own!
|
|
|
|
|
|
|
|
|
|
|
|
|
Off-Topic
|
Joined: Jan 2002
Posts: 7,913
Veteran
|
|
Veteran
Joined: Jan 2002
Posts: 7,913 |
megafiddle has it. The only thing the subwoofer is providing here is a means to shake the hose at a controlled shake frequency - that is all.
The hose moving back and forth is flinging the water coming out of the hose. Gravity and flow rate are providing the movement of the water away from the hose.
To answer PG's question, if it were a string, the effect would be less easy to see because there is going to be lots of damping in the string and the fact that the string isn't liquid. When the hose shakes the water in one direction, the water 'globules' separate from the stream. With a string, the molecules are all attached to each other and prevent horizontal movement much more than you get with the water and it's significantly higher mass and resulting inertia.
One can be fooled into thinking that the acoustic energy of the subwoofer is affecting the stream - that is not what is happening in this demonstration at all.
It is simply the subwoofer moving the hose end in translation coupled with the fact that video is not smooth, but sampled in a way, just like audio. The fact that you can't see the hose moving when it's exactly at 24 Hz is because the hose position is in exactly the same spot for each still shot that the camera is taking 24 times a second. The reason the hose looks like it moves at the other excitation frequencies is that the hose is NOT in exactly the same position for each still shot, but slightly off position from the previous shot. The water droplets are not suspended in space, as they appear, but are in the next closest place to the ground on each subsequent frame - but our brains play tricks on us and connect the frames together to give the appearance of movement. This is the whole premise of how video and film and refresh rates work with TVs, CRTs, LCDs, etc. What appears smooth is actually a quick presentation of still images or refreshed screen images. The same applies in the capture of the images as well.
Make sense?
Last edited by rockstar_not; 03/16/13 07:34 PM.
|
|
|
|
|
|
|
|
|
|
|
|
|
Off-Topic
|
Joined: May 2000
Posts: 15,976
PG Music Staff
|
|
PG Music Staff
Joined: May 2000
Posts: 15,976 |
))). It is simply the subwoofer moving the hose end in translation
Oh, I had missed that, in this experiment, the hose is duct taped to the speaker, and so it is just being physically shaken by the speaker.
So the same thing would happen in a vacuum, and sound waves have nothing to do with it. Seems incorrect that it is called an amazing sound experiment.
Have Fun!
Peter Gannon
PG Music Inc.
|
|
|
|
|
|
|
|
|
|
|
|
|
Off-Topic
|
Joined: Jan 2002
Posts: 7,913
Veteran
|
|
Veteran
Joined: Jan 2002
Posts: 7,913 |
I missed that they called it a sound experiment. It isn't that at all. It's merely a demonstration of aliasing in videography - very cool demonstration - but the implication that it is acoustic in nature is pretty misleading. I didn't pay attention to the title of the video.
|
|
|
|
|
|
|
|
|
|
|
|
|
Off-Topic
|
Joined: Oct 2008
Posts: 8,109
Veteran
|
|
OP
Veteran
Joined: Oct 2008
Posts: 8,109 |
well, it's still worth noting that one of the key elements in the demonstration is the ability to create a controlled sound frequency in order to get a specific movement. It's not just the fact that the hose moves... You could make the hose move any number of ways without getting these results.
An experiment, by definition, is the setting up of a test to see if a repeatable phenomenon can verify the existence of a postulated law. You already know enough about the laws that govern frequency, so you aren't inclined to assume the position of someone who needs to see evidence that proves the nature of waves and measurable frequencies.
Most of the fundamental laws of science were identified by experiments much like this
|
|
|
|
|
|
|
|
|
|
|
|
|
Off-Topic
|
Joined: Jan 2002
Posts: 7,913
Veteran
|
|
Veteran
Joined: Jan 2002
Posts: 7,913 |
Quote:
well, it's still worth noting that one of the key elements in the demonstration is the ability to create a controlled sound frequency in order to get a specific movement. It's not just the fact that the hose moves... You could make the hose move any number of ways without getting these results.
An experiment, by definition, is the setting up of a test to see if a repeatable phenomenon can verify the existence of a postulated law. You already know enough about the laws that govern frequency, so you aren't inclined to assume the position of someone who needs to see evidence that proves the nature of waves and measurable frequencies.
Most of the fundamental laws of science were identified by experiments much like this
Agreed - but I also agree with Peter that calling it a sound experiment is misleading and has folks thinking the wrong physics aspects. At first glance, one would easily assume that the sound waves are 'bending' the water stream - and that isn't what is happening at all.
Here's what I really think is cool about the demo: Note that in order to get what looks like suspended droplets, or even the droplets slowly moving up/down, those are not the same droplets, but similarly sized/placed droplets from each successive 'wave' passage. The flow control to get similarly sized droplets might be hard to pull off.
-Scott
|
|
|
|
|
|
|
|
|
|
|
|
|
Off-Topic
|
Joined: May 2000
Posts: 38,502
Veteran
|
|
Veteran
Joined: May 2000
Posts: 38,502 |
The 24Hz is merely the vibrating frequency of a mechanical function here. You could go outside, pick up the end of your common garden hose and SHAKE it evenly while the water is running out in a downhill direction - and create much the same pattern. The youtube poster is using a subwoofer, amplifier and signal generator set to the very low audio region, but in effect it is NOT being used to create an audio function here. It is being used to create a MECHANICAL function, in other words the excursions of the speaker cone outward and inward at the chosen frequency rate. This particular phenomenon, along with certain other paramaters, such as modulating the pressure of the stream, is exploited in the various popular "Dancing Water" fountain displays: http://www.bing.com/images/search?q=danc...n&FORM=IGRE Just taking advantage of old Newton's laws, for every action there is an equal and opposite reaction, & etc... --Mac
|
|
|
|
|
|
|
|
|
|
|
|
Ask sales and support questions about Band-in-a-Box using natural language.
ChatPG's knowledge base includes the full Band-in-a-Box User Manual and sales information from the website.
|
|
|
|
|
|
|
|
|
|
|
Last Chance! The Band-in-a-Box® 2026 for Mac® Special Ends Today (May 31, 2026) at 11:59pm PDT!
Time really is running out! Save up to 50% on Band-in-a-Box® 2026 for Mac® upgrades and receive a FREE Bonus PAK—only when you order by 11:59 PM PDT today!
We've added many major new features and new content in a redesigned Band-in-a-Box® 2026 for Mac®!
Version 2026 introduces a modernized GUI redesign across the program, with updated toolbars, refreshed windows, smoother workflows, and a new Dark Mode option. There’s also a new side toolbar for quicker access to commonly used windows, and the new Multi-View feature lets you arrange multiple windows as layered panels without overlap, making it easier to customize your workspace.
Another exciting new addition is the amazing new AI-Notes feature, which can transcribe polyphonic audio into MIDI. View the results in notation or play them back as MIDI, and choose whether to transcribe an entire track or transcribe specific parts like drums, bass, guitars/piano, or vocals. There's over 100 new features in Band-in-a-Box® 2026 for Mac®.
There's an amazing collection of new content too, including 202 RealTracks, new RealStyles, MIDI SuperTracks, Instrumental Studies, “Songs with Vocals” Artist Performance Sets, Playable RealTracks Set 5, two RealDrums Stems sets, and much more!
Upgrade your Band-in-a-Box for Mac® to save up to 50% on most Band-in-a-Box® 2026 upgrade packages!
Plus, when you order your Band-in-a-Box® 2026 Mac upgrade during our special, you'll receive a Free Bonus PAK of exciting new add-ons.
If you need any help deciding which package is the best option for you, just let us know. We are here to help!
Band-in-a-Box® 2026 Mac Special Offers Extended Until May 31st!
Good news- we've extended our Band-in-a-Box® 2026 for Mac® special offers until May 31, 2026!
Band-in-a-Box® 2026 is packed with major new features, enhancements, and an incredible lineup of new content! The program now sports a sleek, modern GUI redesign across the entire interface, including updated toolbars, refreshed windows, smoother workflows, a new dark mode option, and more. The brand-new side toolbar provides quicker access to key windows, while the new Multi-View feature lets you arrange multiple windows as layered panels without overlap, creating a flexible, clutter-free workspace. We have an amazing new “AI-Notes” feature. This transcribes polyphonic audio into MIDI so you can view it in notation or play it back as MIDI. You can transcribe an entire track (all pitched instruments and drums) or focus on individual parts like drums, bass, guitars/piano, or vocals. There's an amazing collection of new content too, including 202 RealTracks, new RealStyles, MIDI SuperTracks, Instrumental Studies, “Songs with Vocals” Artist Performance Sets, Playable RealTracks Set 5, two RealDrums Stems sets, and much more!
There are over 100 new features in Band-in-a-Box® 2026 for Mac®.
When you order purchase Band-in-a-Box® 2026 before 11:59 PM PDT on May 31st, you'll also receive a Free Bonus PAK packed with exciting new add-ons.
Check out the Band-in-a-Box® for Mac packages page to find the best package for you.
Holiday Weekend Hours
It's Victoria Day Long Weekend in Canada. Our Customer Service hours are:
Saturday, May 16: Closed
Sunday, May 17: Closed
Monday, May 18: 8:00am - 4:00pm
Regular hours resume Tuesday, May 19th!
Today's the Last Day of the Band-in-a-Box 2026® for Mac Special!
Order before 11:59pm PDT today (May 15, 2026) to save up to 50% off your Band-in-a-Box® 2026 for Mac® upgrade and receive a FREE Bonus PAK loaded with great new Add-ons to use with this new version!
Don't wait - order today!
Check out all the new features in the redesigned Band-in-a-Box® 2026 for Mac®!
Band-in-a-Box® 2026 for Mac - Special Offers End at 11:59pm PDT on Friday, May 15th, 2026!
Order before 11:59pm PDT on Friday, May 15th and SAVE up to 50% on most Band-in-a-Box® version 2026 for Mac Upgrade packages... and that's not all! With your version 2026 for Mac purchase, we'll include a Bonus PAK full of great new Add-ons FREE! Upgrade to the 2026 49-PAK to receive even more NEW Add-ons including 20 additional RealTracks... that's 222 NEW RealTracks available with version Band-in-a-Box® 2026 for Mac!
Upgrade to Band-in-a-Box® 2026 for Mac® today for as little as $49! Check out the Band-in-a-Box® packages page for all available purchase options.
Learn more about the Free Bonus PAK and 49-PAK here.
If you have any questions about which package is the best option for you, just let us know. We're here to help!
202 New RealTracks Released with Band-in-a-Box 2026!
With Band-in-a-Box® 2026, we've released 202 incredible new RealTracks (in sets 468-488) in a variety of genres—featuring your most requested styles!
Jazz, Funk & World (Sets 468-475):
Our new jazz, funk & blues RealTracks include a groovin’ collection of RealTracks and RealDrums! These include more requested “soul jazz” RealTracks featuring artists Neil Swainson (bass), Charles Treadway (organ), Brent Mason (guitar), and Wes Little (drums). There are new “smooth jazz” styles (4), which include a RealTracks first: muted trumpet, as well as slick new smooth jazz brushes options for drums. Blues lovers will be thrilled—there are more “classic acoustic blues” styles, including guitar (5), bass (4), and drums (10) with blues master Colin Linden, featuring understated and tasty background acoustic soloing, plus brushes drums and acoustic bass. There are also new electric blues RealTracks, including electric blues with PG favorite Johnny Hiland (3) and soulful electric slide guitar from Colin Linden (4). If you love funk & gospel, there are great new options this year, including gospel organ (3) from Charles Treadway, as well as new funk, tango, and rock ’n’ roll drums (3) and bass (1). And for big, bold arrangements, we have uptempo soul horns (4) featuring a three-part hip horn section with options for a full mix or stems of each individual horn — plus an accompanying rhythm section (4) of drums, bass, guitar, and electric piano!
Rock & Pop (Sets 476–482):
Our new rock & pop RealTracks bring a powerful mix of requested favorites, fresh genres, and modern chart-inspired styles! We have more of our popular “Producer Layered Acoustic Guitars (15)” featuring Band-in-a-Box favorite Brent Mason. We’ve continued our much-requested disco styles (10), and added new Celtic guitar (5) with a more basic, accessible approach than our previous Drop-D or DADGAD offerings. There are also highly requested yacht rock styles (17), inspired by the smooth, polished soft-rock sound of the late ’70s and early ’80s — laid-back grooves, silky electric pianos, warm textures, elegant harmonic movement, and pristine production aesthetics. Fans of heavier styles will love our new glam metal (13), capturing the flashy, high-energy sound of ’80s arena-ready guitar rock. We also have a set of rootsy modern-folk rock (18), with a warm, organic sound combining contemporary folk textures and driving acoustic strumming. And we’ve added lots of new modern pop styles (16) — the kinds of sounds you’re hearing on the radio today, featuring exciting new drums, synths, and cutting-edge RealTracks arrangements.
Country, & Americana (Sets 483–488):
Our new country & Americana RealTracks deliver a rich collection of acoustic, electric, and roots-inspired styles! We have new country pop (9) with legendary guitarist Brent Mason. There is also a potpourri (14) of bouzouki, guitars, banjo, and more, perfect for adding texture and character to contemporary acoustic arrangements. We’ve added funky country guitar (5) with PG favorite Brent Mason, along with classic pedal steel styles (5) featuring steel great Doug Jernigan. There are more country songwriter styles (8) that provide intimate, rootsy foundations for storytelling and modern Americana writing. Finally, we have “background soloing” acoustic guitar (12) with Brent Mason — simpler, but still very tasty acoustic lines designed to sit beautifully behind vocals or act as a subtle standalone solo part.
Check out all the 202 new RealTracks (in sets 468-488)!
And, if you are looking for more, the 2026 49-PAK (for $49) includes an impressive collection of 20 bonus RealTracks, featuring exciting and inspiring additions to add to your RealTracks library. You'll get new country-rhythm guitar styles from PG Music favorites Johnny Hiland and Brent Mason, along with modern-pop grooves that capture today’s radio-ready sound! There are also new indie-folk styles with guitar, bass, 6-string bass used as a high-chording instrument, acoustic guitar, and banjo. Plus, dedicated "cymbal fills" RealDrums provide an added layer that work very well with low-key folky styles with other percussion.
The 2026 49-PAK is loaded with other great new add-ons as well. Learn more about the 2026 49-PAK!
2026 Free Bonus PAK & 49-PAK for Band-in-a-Box® 2026 for Mac®!
With your version 2026 for Mac Pro, MegaPAK, UltraPAK, UltraPAK+, Audiophile Edition or PlusPAK purchase, we'll include a Bonus PAK full of great new Add-ons for FREE! Or upgrade to the 2026 49-PAK for only $49 to receive even more NEW Add-ons including 20 additional RealTracks!
These PAKs are loaded with additional add-ons to supercharge your Band-in-a-Box®!
This Free Bonus PAK includes:
- The 2026 RealCombos Booster PAK:
-For Pro customers, this includes 27 new RealTracks and 23 new RealStyles.
-For MegaPAK customers, this includes 25 new RealTracks and 23 new RealStyles.
-For UltraPAK customers, this includes 12 new RealStyles.
- MIDI Styles Set 92: Look Ma! More MIDI 15: Latin Jazz
- MIDI SuperTracks Set 46: Piano & Organ
- Instrumental Studies Set 24: Groovin' Blues Soloing
- Artist Performance Set 19: Songs with Vocals 9
- Playable RealTracks Set 5
- RealDrums Stems Set 9: Cool Brushes
- SynthMaster Sounds Set 1 (with audio demos)
- iOS Android Band-in-a-Box® App
Looking for more great add-ons, then upgrade to the 2026 49-PAK for just $49 and you'll get:
- 20 Bonus Unreleased RealTracks and RealDrums with 20 RealStyle.
- FLAC Files (lossless audio files) for the 20 Bonus Unreleased RealTracks and RealDrums
- MIDI Styles Set 93: Look Ma! More MIDI 16: SynthMaster
- MIDI SuperTracks Set 47: More SynthMaster
- Instrumental Studies 25 - Soul Jazz Guitar Soloing
- Artist Performance Set 20: Songs with Vocals 10
- RealDrums Stems Set 10: Groovin' Sticks
- SynthMaster Sounds & Styles Set 2 (sounds & styles with audio demos)
Learn more about the Bonus PAK and 49-PAK for Band-in-a-Box® 2026 for Mac®!
|
|
|
|
|
|
|
|
|
|
|
|
Forums57
Topics86,445
Posts805,166
Members40,121
| |
Most Online64,515
Apr 8th, 2026
|
|
|
|
|
|
|
|
|
Dansk
Deutsch - Windows
Español
Français - Windows
Italiano - Windows
Nederlands
Polski
Português
Svenskt
русский
Japanese
Simplified Chinese
Traditional Chinese
Korean