Newsletter #5

Hello Steelpan Vibrations Volunteers,

We are happy to announce to you a final wave of information for the summer.

 

CODING

Our data aggregation software is in its final stages of development. We have been going through a lot of error-reducing and debugging of our program. Check out the blog post with images from our program here

 

TWITCH LIVESTREAM

We successfully had our twitch live stream last Wednesday night. Professor Morrison went over various aspects of the project and we hope it clears up any questions many of you might have!  You can even check out the replay of the live stream here!

 

SCISTARTER

We are now a listed project on the SciStarter website! If you are a fan of citizen science projects, please visit our page there where you can bookmark our page and check yourself off as a volunteer for our project. 

 

THE STATUS OF THE TEAM

As the summer is coming to an end, so is most of the team working on this project. Thursday, July 26 will be the last day the two undergraduates will be actively working on this project. That, however, does not mean this project is ending. We still are in need of two complete subject sets, so Professor Morrison can analyze them! Please continue to support this project as it will stay active while volunteers like you continue making classifications and bringing interesting discussions to the table.

 

CONCLUSION

We continue to thank each of you for participating in this project since the beginning of the summer.  We hope that our constant updates on the project have proven to entertain and inspire you to continue making those classifications. We also want to thank our moderators for doing such a good job at keeping things lively and posted on our project page. Without any of you, this project would not be what it is today. The team leaving hopes to see the volunteers continue to make classifications and make this project thrive! 

 

Thanks for all your help,
Andrew & the Steelpan Vibrations Team

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Screenshots of our custom software for processing classifications

Throughout this summer, we have been working hard on developing software for us to aggregate all of the classifications our volunteers have made. We request a text file from Zooniverse which contains all of your wonderful classifications!

One member of the Steelpan Vibrations team has been developing a graphical user interface (GUI) for us to use to overlay average ellipse measurements on top of the original images from our project. Below is a screenshot of the GUI which shows the software displaying an unmodified image:

Capture1

Our software sorts all of the classifications and is able to parse the data to recognize groups of similar ellipses which are marking the same antinode. Then the average ellipse is calculated for each antinode and displayed in the GUI:

Capture2

You can take a look at our code here:

https://github.com/JJC-Physics-and-Engineering/Steelpan-Vibrations

Newsletter #4

Here is the Newsletter sent out to the Zooniverse subscribers of Steelpan Vibrations:

 

Greetings Steelpan Vibrations Volunteers,
We are happy to give you another weekly update on the Steelpan Vibrations project!

 
LIVESTREAM
Some exciting news: we are planning to do a live stream event this week on Wednesday night on Twitch.tv! Read about it on our blog and sign up for the event on our Facebook page.

CODING
We are still in the process of creating a stable and user-friendly program that can interpret our classifications for analyzing and feeding into a machine-learning algorithm. Our GitHub link is still available on the front page of the project!

WORKFLOW
As suggested by a volunteer on our talk pages, we have updated our workflow to get rid of the first step of counting the number of antinode regions you see in an image. Instead, you are immediately asked to start drawing the ellipses around antinodes.

RESULTS OF THE CALL TO ACTION
To all our new and long-time volunteers, we want to thank each one of you for providing classifications to our project. In the past week, you have contributed over 2500 classifications which is fantastic for our project! While the numbers have been dwindling down as expected, we hope that you continue participating throughout the summer and beyond. Just know that we couldn’t continue this research without you!

SHORT NOTE
Next week is the last week that the summer research team will be actively working on this project. That does not mean this project is ending as it will still continue on until we reach our final goal of 200,000 classifications and retire all of our subject image sets!

CONCLUSION
Once again, we thank each and every one of the volunteers for providing us feedback and making classifications. We know summer can get quite busy with vacations and spending more time with family, but we do hope that every one of you continues to participate in Steelpan Vibrations into the Fall and Winter!

Thanks for all your help,
Andrew & the Steelpan Vibrations Team

Livestream on Twitch this Wednesday, July 18th @ 9PM CT

Hello Steelpan Vibrations Volunteers,

From the limited responses we have received on the best time to live stream and working around our schedule, we have decided to host a livestream of us performing classifications on Twitch this Wednesday, July 18th around 9 pm Central time! The team will be online, including Professor Morrison.

The purpose of this live stream is to show our volunteers how we perform a classification and in doing so will give volunteers like you a few tips on how to make a proper classification. We also hope to hold a live Q and A session to answer any questions you may have for us! It will be hosted on this channel: https://www.twitch.tv/achmorrison

We hope to see you there on the live stream!

-Steelpan Vibrations Team

Newsletter #3

Hello Steelpan Volunteers,

We thank you for your patience from the previous 3 weeks without any newletters, but we are back in action to keep you up to speed!

CALL TO ACTION

As you may have noticed, Zooniverse recently sent out a call to action on our behalf to the entire Zooniverse community. To sum it up: Our goals have temporarily narrowed and we are seeking many volunteers to help us reach that goal! Whether you are new to our project or have been with us from the start, we are thankful for all of you who are helping us out.

CODING

We have been working on our data processing code for future analysis and for feeding information into a machine-learning AI. The progress on that has been going well. We are publicly sharing our code on GitHub if you are curious on how it runs. The GitHub link is here and will be on our main page in Zooniverse: https://github.com/JJC-Physics-and-Engineering/Steelpan-Vibrations

NEW BLOG POSTS

We have also been updating our blog regularly. A recent blog post explains why we need a large number of classifications and gives a few examples of classifications with missed antinode regions:

https://steelpanvibrations.wordpress.com/2018/06/28/why-we-need-so-many-classifications/

Another post talks about how we are analyzing our data including classification examples and some critique:

https://steelpanvibrations.wordpress.com/2018/06/28/a-peak-at-the-analysis-we-are-doing/

This post delves into the origins of this Steelpan Vibrations project and how it came to be, check it out here:

https://steelpanvibrations.wordpress.com/2018/06/29/the-origins-of-the-steelpan-vibrations-project/

We also visualized our goals by creating a hypothetical histogram based on how we want our progress to look. Read about it here:

https://steelpanvibrations.wordpress.com/2018/06/28/why-we-need-so-many-classifications/

CONCLUSION

That is all we have for you now. As always, we appreciate you helping us out with the Steelpan Vibrations project and we hope you continue to volunteer, especially with our new goal in mind!

– Andrew & the Steelpan Vibrations Team

Welcome New Volunteers and LiveStream Next Week!

Hello Steelpan Vibration Volunteers,

As always, we appreciate your time and dedication to this project. We also want to welcome the new volunteers to this project and thank you for your time and dedication on our project, there is lots of information to read on this blog with continuous updates until the end of the summer!

Just to inform the new volunteers, we are STILL a long way from our goal despite narrowing our goals since the beginning of summer. At this rate, we need about 2082 per day to reach our goal of classifying, so please keep it up and tell your friends and family about this project!

On another set of announcements, we want to ask all our Steelpan Vibrations volunteers AND followers if they would be interested in viewing a live stream (not longer than about 30 minutes) where the research team does classifications of their own and answers any questions that the volunteers want to pose. We believe this is critical since there may be questions you might or might not have had when making classifications and we want to make sure the entire classification process is clear to the steelpan vibrations volunteers!

We would like to know when the best time would be to stream for you. This might not serve everyone’s schedule, but we will be sure to try to accommodate as many people as possible! Let us know in this survey here: https://goo.gl/forms/RZCgJQbHFwlfpKuo2

As always, we thank you for following this project and keeping it lively. Without you, this project would not see any success!

-Steelpan Vibrations Team

Visualized Goals

We have discussed our goals before and that we want to achieve a certain number by the end of the summer. However, you may be wondering how does that look like?

Histogram Classifications

As seen from the histogram above, this captures the amount of classifications we had as of two weeks ago. As you can see, many of the images have had at least one classification while very few has had 9 or more.

We have recently made another histogram two weeks later and this is the result:

histogram update 2

From the progress so far, we can see that our zero-counted classifications has decreased by almost 500 and 2-count classifications are increasing while our one-count classification is decreasing

At the end of this summer, we hope to have a graph that will look similar to this:

Theoretical Histogram Classifications

From this hypothetical histogram, you can see that we want at least a majority of our images to have five classifications or more by the end of the summer. As seen from our first two histograms, progress is being made but at a slow pace. The only way we can reach our predicted goal with the last histogram is with you, the volunteers of our Steelpan Vibrations team. Please keep up the classifications, make it a goal to classify at least 5 classifications per day, and we can be sure to finish off with some great results!

Update on our Subject Sets and Goals

Hello Steelpan Vibrations Volunteers,

While evaluating our goals, we have decided that we want to narrow down to try to finish at least two subject sets by the end of the summer.  In order to do this, we will be exclusively using our two subject sets on Zooniverse which already have the most classifications in them.  This, in turn, will give us good data so we can start our analysis on our research, as well as feeding it in the machine-learning AI!

Once we have reached this new goal, we will make the other subject sets active again so volunteers can classify them.  This is a temporary change until we finish classifications on those two sets.

-Steelpan Vibrations Team

THE ORIGINS OF THE STEELPAN VIBRATIONS PROJECT

The Steelpan Vibrations Team thanks all the volunteers who contributed to this project since we have gotten many great classifications so far. We believe that you should get to know what this project is and how it came to be, so you can understand more of what we are doing.

WHAT IS THE STEELPAN?

The steelpan originated in Trinidad and Tobago and is essentially a 55-gallon barrel that was carefully hammered on the bottom for tuning. The unique nature of the Steelpan comes from the vibrations of different notes that are all coupled together since the notes are all embedded in the same piece of steel.

While we have a limited understanding of this vibrational coupling, we do know how the individual notes behave.

To understand how to interpret images made by electronic speckle pattern interferometry you can look for the concentric rings which indicate where the steelpan is vibrating. These sets of concentric rings are also known as antinode regions. The numbers or rings, or fringes, measures the amplitude of the note’s displacement.  The first image below shows a single note vibrating at the frequency of its first resonance (the lowest frequency resonance.) on a tenor steelpan.Vibration 1Vibration 2.jpg

From <https://www.zooniverse.org/projects/achmorrison/steelpan-vibrations/about/research&gt;

In the image above, we see the same note in its second resonance. This resonance has two antinode regions, separated by a nodal line running between them as seen in the image above.

HOW THIS PROJECT CAME TO BE

It has been long suspected in the musical acoustics community that the sound of the steelpan has a time-dependent nature related to the transfer of energy between different components of the sound spectrum. It is not well understood how it works and historically has not been easy to observe the motion of the steelpan in the short time after a strike has occurred. In 2009, the Physics Department at Rollins College acquired a high-speed camera to use with their electronic speckle pattern interferometry system. Professor Morrison was intrigued by this and wanted to see if they would help him make those observations. When he went there, they were fortunate enough to help with his measurements.

The Caribbean Steelpans were chosen because Professor Morrison liked how it was a recently invented tuned instrument which is prominently used in the world. He also enjoys its deceptively complex mechanical system–meaning it looks simple enough as it is just a bunch of notes hammered into the bottom of an oil barrel, but the complexity of its rich sound grows deeper it is studied.

Through getting this research off the ground, there have been various failures. Such an early failure was that Professor Morrison looked exclusively at the first 100 or 200 frames after the mallet strike happens. He thought that was enough to analyze it, but he realized that he was looking for what happens in the first 2000 frames and would need a different approach. On the flip side, some successes were in the Summer of 2017 where the previous research team helped Professor Morrison develop this project into an official Zooniverse project. They chose Zooniverse since it was the best platform for a crowd-sourced volunteer to classify and analyze data that cannot be easily processed by software. A python code was written and developed last year, and they learned enough of the project to present their work to the acoustical society of America in December of 2017.

WHAT WE NEED

What we want to know is how do the vibrations propagate in different areas of the steelpan’s surface? It leads to a better understanding of how coupling vibrations may occur in other surfaces and how the mechanical energy is transferred.

That’s why we are asking you as a volunteer for help, so we can track the motion of vibrations as it travels through the steelpan when they develop and decay. So please, continue making classifications as it will continue to help our understanding of the vibrations!