Audio Signal Processing

**Rockville Science Center Chess Night and Lessons by FIDE Master Luke** **Time/Date: Monday evening, 6:30 to 9:00 PM** Join us as FIDE Master Luke delivers a chess lecture with notes. He begins teaching at 7:15pm. **Location: RSC "Storefront" Location,** 36C, Maryland Avenue, Rockville, MD 20850 **Parking:** First two hours free at Parking Garage "A", 20 Maryland Ave #450, Rockville, MD 20850 * Casual Chess - Everyone is welcome. * You do not have to know how to play chess(!!!!) * Chess sets available on a first come - basis. * Wonderful chess sets provided, BYOC (bring your own clock) Host: Howard Lichtman More information about the RSC is at https://www.rockvillesciencecenter.org/

This Happy Hour -AND- Film Screening is for creative people and folks who appreciate creativity. Whether you attend, produce, appreciate, or promote, you are welcome to join us on Monday, December 29, 2025 from 5pm-7pm for a Happy Hour -AND- Film Screening at Silver Branch Brewing Co in Silver Spring, MD. We are screening our Make a Movie in a Month films at this Happy Hour, so please join us in supporting our filmmakers and their documentary short films! Come meet, network, and enjoy. Only those ages 21 and up can attend. Happy Hour specials are from 5pm-6pm: $5.95 beer and select drinks. Entrance is free. This is a casual event. Register on Eventbrite at [https://HappyHour12-29-25.eventbrite.com](https://HappyHour12-29-25.eventbrite.com). This event is produced in partnership with[ TIVA](https://www.tivadc.org/) (Television, Internet, and Video Association of DC),[ WIFV](https://www.wifv.org/) (Women in Film & Video),[ Wheaton Film Festival](https://www.wheatonfilmfestival.com/),[ ReelAbilities Film Festival](https://reelabilities.org/greaterwash/),[ Docs in Progress](https://www.docsinprogress.org/), DC Media Makers Group, etc. Sponsored by[ Brian Frankel Law Firm PLLC](https://brianfrankel.com/),[ Creative Colony Spaces](https://www.creativecolonyspaces.com/membership/overview), and Adobe Software. Enjoy delicious craft beers, tasty snacks, and great company in a relaxed atmosphere. Whether you're a beer enthusiast or just looking to unwind after a long day, this event is perfect for you. Don't miss out on the opportunity to kick back and relax with us at Silver Branch Brewing Co. Use the QR codes at the table to order food and drinks, and be prepared to mingle. Check out the[ Silver Branch Brewing Company's Menu](https://www.silverbranchbrewing.com/lagerhaus-biergarten/). PARKING: Paid parking available at the Cameron Street Garage on 8530 Cameron St. See you there on 12/29/25!

If you're looking for a casual game of chess in a fun atmosphere, this event is for you! Members range from beginner to expert level, and games are played both with and without time controls. They meet upstairs, on the mezzanine. Upon arrival, fill out a name tag and indicate your relative skill, to help facilitate match-ups. Club sets are available, though members are welcome to bring their own as well. They don't have club clocks, but most people use the Chess Clock app from Chess.com to play timed games. More info at https://www.meetup.com/chess-on-tap/ Hosts: Leith W. and Ryan C.

Let's sneak one more sesh in before the end of the year. The Southwest Library is right off the Waterfront Metro. We'll be in Conference Room 2, which is on the second floor. If you use the elevator, the room is immediately to your left as you exit, and has a glass wall. If you take the stairs, you can ask the person at the information desk.

Climbers of all skill levels are welcome! To join us: 1. Complete the [participant agreement](https://movementgyms.com/participant-agreement/). 2. Pass the belay check, which can be done the same day. See [FAQs](https://movementgyms.com/first-visit/#faqs) for more info. 3. Pay for [gym membership or day pass](https://movementgyms.com/memberships-passes/). The event itself is run by volunteer organizers free of charge. If you are interested but have never belayed before, please take the [Introduction to Rope Climbing](https://movementgyms.com/rockville/calendar/#activity=climbing&location=rockville&class-type=intro-series&area-of-focus=safety-and-belaying) class first. We'd love to climb with you as soon as you know how to belay safely using a GriGri. To find us, go past the front desk and turn left. We'll gather by the fitness room entrance. If you need a refresher on knot tying and/or belaying, please post in comments or message the host and we'll be happy to help. We normally top rope in groups of 2-3 people, but some are also happy to lead. Post in comments or ask on the spot if you are interested in leading.

Reserve a spot on **[Eventbrite](https://www.eventbrite.com/e/1381364631799?aff=oddtdtcreator)** so we have an accurate guest count. We are absolutely thrilled to announce that **[Palette 22](https://www.palette22.com/)** is hosting Go Gay DC! Get ready for another gathering of members of the LGBTQ+ Community! About 30 LGBTQ+ folk are expected. Palette 22 offers modern street food spanning the globe served in a bustling art studio & gallery atmosphere. This event is ideal for making exciting new connections and community building. Or just to unwind and enjoy extended happy hour. **[See the happy hour menu](https://www.palette22.com/our-menus#happy)**. Arrive anytime that's convenient for you! Most attendees will likely arrive by 6:00 p.m. We will gather at the tables in the back of the bar. There is no pressure to order any food or drink; it is just optional. You're welcome regardless of where you live. Bring friends and meet new people. This is the place to be. This LGBTQ and Allies community-wide social provides everyone a chance to socialize, network, and share community spirit in an artsy setting. This event is being boosted by **[Go Gay DC](https://www.gogaydc.com/)**[,](https://www.gogaydc.com/) Metro Washington DC's inclusive LGBTQ+ community focused on friendship, leadership, and service. It reaches over 10K fabulous people and is growing fast. Visit [https://www.gogaydc.com](https://www.gogaydc.com/) At this exciting event, you'll even get to meet Go Gay DC's Founder **[TJ Flavell](http://www.tjflavell.com)**! Fabulous people from all over the world are expected. Name tags will be provided. It's FREE to attend; cash bar. There will be a bartender on duty; cash or credit card is fine. Casual attire is fine; this will be a relaxing and fun time. You are welcome regardless of where you live. Guests from DC, Maryland, and Virginia often attend. While there is no subway stop nearby, the local bus system is also very reliable and Shirlington is a very busy [transit hub](https://www.arlingtontransit.com/about/facilities/shirlington/ "https://www.arlingtontransit.com/about/facilities/shirlington/"). Use [Metro Trip Planner.](https://www.wmata.com/schedules/trip-planner/ "https://www.wmata.com/schedules/trip-planner/") Free garage parking is easy to find. Four of Shirlington’s garages share their parking so that the spaces available to office workers during the day are available for public parking on evenings and weekends. During the weekdays there are 879 public parking spaces and on evenings and weekends there are 2,446 public parking spaces. [See the map](https://www.arlingtonva.us/Government/Programs/Transportation/Parking/Public-Parking-Options/Shirlington-Parking "https://www.arlingtonva.us/Government/Programs/Transportation/Parking/Public-Parking-Options/Shirlington-Parking"). Invite your friends. This event is a safe, inclusive space for everyone under the rainbow. Go Gay DC is on social media: Join the Facebook Group [https://www.facebook.com/groups/GoGayDC](https://www.facebook.com/groups/gogaydc) Like the Facebook Page [https://www.facebook.com/GoGayDC](https://www.facebook.com/GoGayDC) Follow on Instagram [https://www.instagram.com/GoGayDC](https://www.instagram.com/GoGayDC) Follow on Bluesky [https://gogaydc.bsky.social/](https://gogaydc.bsky.social/) Follow on X [https://www.x.com/GoGayDC](https://www.x.com/GoGayDC) Watch on YouTube [https://www.youtube.com/GoGayDC](https://www.youtube.com/GoGayDC) Search keywords: LGBT LGBTQ LGBTQI LQBTQIA Lesbian Gay Bisexual Transgender Queer Intersex Straight Allies nonbinary non-binary

Get started! Whether you are experienced or a complete new thisdrum class offers fun for you. Learn the basics of popular Brazilian rhythms: samba, samba reggae, axé, ijexa and more. We provide the drums in a fun atmosphere to learn. Drop in:$10

Let Spirit move you to a mix of music both sacred and fun, and all with an upbeat orientation. Freestyle, individual dancing in two sets of 30 mins each. Come on time to start with ten minutes of stretching. Donations accepted but not required. RSVPs appreciated.

Chess club is expanding to Patriot's Pub & Grill on Wednesdays! 6pm, per usual. We will have an entire backroom reserved that can seat around 30 people, with 4 TVs, our own audio system, and food and drinks you can order. Patriot's is located at: 10560 Main St, Fairfax, VA 22030 See you soon!

Welcome to our new home at the historic Tivoli Theater! Please check our details for access to the space on [our website](https://www.hacdc.org/visit/). Join the discord for questions / help getting in (use channel #let-me-in) [https://discord.gg/dNjuNhNmeT](https://discord.gg/dNjuNhNmeT)

Discover the power of your breath to manage your mind and experience instant peace & calm. Join a 60-minute free Workshop and get a glimpse of the Sudarshan KriyaTM- The breathing technique that is revolutionizing the lives of millions. What you’ll discover at ‘Beyond Breath’ ✔ A taste of the Sudarshan KriyaTM, a breathing technique taught in the Happiness Program ✔ An instant energy booster that awakens & relaxes your mind - Take it home and practice daily! ✔ The peace & calm of a unique guided meditation ✔ Secret keys to manage your mind ✔ The power of surrounding yourself with positive, like-minded people. You can use your breath to master your thoughts and emotions - the key to managing the quality of your day. The Happiness Program At the end of this workshop you may enroll into the Happiness Program (3 days, 3 hours each day) to learn the Sudarshan KriyaTM, a science-backed, rhythmic breathing technique through which you can: Tap into a reservoir of energy and use it as you please! Relieve deep-rooted stresses and anxieties Uplevel your productivity Overcome emotional blocks, move on from past events and shed limiting beliefs Heal your body & gain power over your mind Experience the true state of meditation Learn more about the Happiness Program & the Sudarshan KriyaTM in our introductory workshop 'Secrets to Meditation'. register: http://aolf.live/introSKY

Join Sacred Sound Alchemy Columbus for a transformative Sound Bath experience that will take you on a journey of self-discovery and healing. Immerse yourself in the powerful vibrations of various sound instruments like crystal singing bowls and rain drums, carefully orchestrated to balance your chakras and uplift your spirit. The soothing sounds will help you release negative energy, reduce stress, and promote deep relaxation. This event is perfect for those seeking a moment of tranquility and a chance to connect with their inner selves. Whether you are new to sound healing or a seasoned practitioner, you will benefit from the harmonious frequencies that will resonate with your body and soul. Come and allow yourself to be enveloped in a wave of healing energy, leaving you refreshed, rejuvenated, and ready for life's next chapter. Please bring something comfortable to lay on like a yoga mat. Being a pillow for your head or for under your knees and a blanket to cover over yourou. The library can get cold. Bring some water to help flush your body for after the session.

**Web Design Decoded: Tools, Practices, and Proven Processes:** **Semantic HTML** At WebDev Columbus, we are exploring some of the most important topics of professional high-end web design and page building. Primarily focused on site building in the WordPress environment, our group explores tools, tips, and techniques for building the best WordPress sites possible. Additionally, we focus on disciplines and technologies that take website design from visually appealing to optimized spaces for delivering you and/or your client's message effectively and with a nod towards extended reach. Each session combines practical demonstrations with real-world insights, giving you actionable knowledge you can apply immediately. Whether you're a seasoned developer looking to enhance your design skills or a newcomer wanting to understand design best practices, this series offers valuable insights for every skill level. **What to expect:** * Hands-on demonstrations of popular design tools * Best practices for design-to-development workflows * Tips for creating responsive, accessible designs * Real-world problem-solving scenarios * Interactive Q&A sessions * Networking opportunities with fellow developers **Each meetup features:** 60 minutes of focused presentation 30 minutes of live demonstrations 30 minutes for questions and discussion **See you there!** Our casual, collaborative environment encourages learning from both presenters and fellow attendees. Bring your questions, share your experiences, and connect with Central Ohio's web development community! **Stay tuned for specific session topics and dates.**

Monday December 29th at 6PM we'll be meeting up dinner at the Pies & Pints at Easton. Feel free to bring guests. Sandwiches run about $15 and large pizzas run $20-30.

The Photoshop Bootcamp workshop is an intensive training course designed to quickly teach participants the fundamentals and intermediate skills needed to use Adobe Photoshop effectively. This workshop condenses the material covered in introductory and intermediate Photoshop courses into a shorter, information-packed weekend. Participants will learn to navigate the Photoshop workspace, use tools for retouching and color correction, and manipulate layers and adjustment layers. The workshop also emphasizes practical, hands-on experience with real-world image editing and compositing projects. The Photoshop Bootcamp workshop will follow the outline below: I. Introduction to Photoshop * **A. Understanding the Photoshop Interface:** Exploring the workspace, panels, tools, and options bar. * **B. Basic Image Concepts:** Pixels, resolution, image sizing, cropping, and color models (RGB vs. CMYK). * **C. Non-Destructive Editing Principles:** Why it's important and how to maintain flexibility. II. Working with selections * **A. Selection Tools:** Marquee, Lasso, Magic Wand, Quick Selection, and Pen tool. * **B. Refining Selections:** Using Select and Mask, feathering, and other techniques for precise edges. * **C. Creating and Managing Masks:** Layer masks for non-destructive selections and image blending. III. Layers and Adjustments * **A. Understanding and Managing Layers:** Creating, selecting, moving, grouping, and organizing layers. * **B. Blending Modes:** Exploring different ways layers interact and create visual effects. * **C. Adjustment Layers:** Non-destructive color and tonal adjustments (e.g., Levels, Curves, Hue/Saturation). IV. Photo retouching and manipulation * **A. Healing Tools:** Spot Healing Brush, Healing Brush, and Patch Tool for removing blemishes and unwanted elements. * **B. Clone Stamp Tool:** Duplicating and removing areas within an image for seamless repairs. * **C. Content-Aware Tools:** Using features like Content-Aware Fill and Content-Aware Move for intelligent object removal and image manipulation. V. Advanced techniques * **A. Smart Objects:** Working with Smart Objects for non-destructive transformations and advanced compositions. * **B. Filters and Effects:** Exploring the Filter Gallery and applying various effects to images and layers. * **C. Combining Images:** Compositing and blending multiple images seamlessly using selections, masks, and adjustment layers. VI. Output and workflow * **A. Saving for Web and Print:** Understanding image resolution, file formats, and optimization for different output needs. * **B. Exporting and Sharing Images:** Various methods for exporting and sharing your Photoshop creations. * **C. Workflow Tips and Best Practices:** Efficient techniques and organizational strategies for working in Photoshop. VII. Wrap-up and Q&A * **A. Review of Key Concepts:** Brief recap of the main topics covered during the workshop. * **B. Open Discussion and Questions:** Answering participants' questions and providing further guidance. * **C. Next Steps and Resources:** Suggesting additional resources for continued learning and exploration. The Photoshop Bootcamp workshop is a hands-on workshop, and example files and materials are made available to each participant. Each participant is required to have a computer available for use throughout the workshop. That computer must be adequately configured to run the latest version of Photoshop available in Adobe's Creative Cloud software suite (as of the time of this document, that version is Photoshop 2025 (Version 26.9.0)). Photoshop should be installed and operational before the commencement of the workshop. Please don't hesitate to contact me PRIOR TO THE WORKSHOP to confirm that you are indeed prepared for doing the hands-on exercises during the workshop. GENERAL WORKSHOP NOTES: There is a fee of $400 per person associated with this workshop. The Photoshop Bootcamp workshop comprises two sessions (Session 01, November 22nd, and Session 02, November 23rd). The $400 fee covers participation in both sessions. For scheduling purposes, on Meetup.com, the workshop is broken up into two (2) sessions. You only need to sign up for Session 01 (November 22nd), you will AUTOMATICALLY be signed up for Session 02 (November 23rd). The following registration/cancellation policy is in place for this workshop: * The workshop fee is due upon signing up for the event. You will be contacted shortly after you register to make arrangements for processing payment. * Participant cancellations before October 22nd are entitled to a FULL refund of the workshop fee. Participant cancellations after October 22nd, but before November 15th, are entitled to a 50% refund of the workshop fee. Participant who cancel **after November 15th** will not be entitled to a refund of their workshop fee. A continental breakfast is available each morning of the workshop (Session 01, November 22nd, Session 02, November 23rd) and includes coffee, tea, juice, and water. Lunch time (12:00 - 1:00 p.m.) features a catered lunch on each day of the workshop (Session 01, November 22nd, Session 02, November 23rd) and includes a selection of beverages such as coffee, iced tea, soda, and sports drinks.

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

The Photoshop Bootcamp workshop is an intensive training course designed to quickly teach participants the fundamentals and intermediate skills needed to use Adobe Photoshop effectively. This workshop condenses the material covered in introductory and intermediate Photoshop courses into a shorter, information-packed weekend. Participants will learn to navigate the Photoshop workspace, use tools for retouching and color correction, and manipulate layers and adjustment layers. The workshop also emphasizes practical, hands-on experience with real-world image editing and compositing projects. The Photoshop Bootcamp workshop will follow the outline below: I. Introduction to Photoshop * **A. Understanding the Photoshop Interface:** Exploring the workspace, panels, tools, and options bar. * **B. Basic Image Concepts:** Pixels, resolution, image sizing, cropping, and color models (RGB vs. CMYK). * **C. Non-Destructive Editing Principles:** Why it's important and how to maintain flexibility. II. Working with selections * **A. Selection Tools:** Marquee, Lasso, Magic Wand, Quick Selection, and Pen tool. * **B. Refining Selections:** Using Select and Mask, feathering, and other techniques for precise edges. * **C. Creating and Managing Masks:** Layer masks for non-destructive selections and image blending. III. Layers and Adjustments * **A. Understanding and Managing Layers:** Creating, selecting, moving, grouping, and organizing layers. * **B. Blending Modes:** Exploring different ways layers interact and create visual effects. * **C. Adjustment Layers:** Non-destructive color and tonal adjustments (e.g., Levels, Curves, Hue/Saturation). IV. Photo retouching and manipulation * **A. Healing Tools:** Spot Healing Brush, Healing Brush, and Patch Tool for removing blemishes and unwanted elements. * **B. Clone Stamp Tool:** Duplicating and removing areas within an image for seamless repairs. * **C. Content-Aware Tools:** Using features like Content-Aware Fill and Content-Aware Move for intelligent object removal and image manipulation. V. Advanced techniques * **A. Smart Objects:** Working with Smart Objects for non-destructive transformations and advanced compositions. * **B. Filters and Effects:** Exploring the Filter Gallery and applying various effects to images and layers. * **C. Combining Images:** Compositing and blending multiple images seamlessly using selections, masks, and adjustment layers. VI. Output and workflow * **A. Saving for Web and Print:** Understanding image resolution, file formats, and optimization for different output needs. * **B. Exporting and Sharing Images:** Various methods for exporting and sharing your Photoshop creations. * **C. Workflow Tips and Best Practices:** Efficient techniques and organizational strategies for working in Photoshop. VII. Wrap-up and Q&A * **A. Review of Key Concepts:** Brief recap of the main topics covered during the workshop. * **B. Open Discussion and Questions:** Answering participants' questions and providing further guidance. * **C. Next Steps and Resources:** Suggesting additional resources for continued learning and exploration. The Photoshop Bootcamp workshop is a hands-on workshop, and example files and materials are made available to each participant. Each participant is required to have a computer available for use throughout the workshop. That computer must be adequately configured to run the latest version of Photoshop available in Adobe's Creative Cloud software suite (as of the time of this document, that version is Photoshop 2025 (Version 26.9.0)). Photoshop should be installed and operational before the commencement of the workshop. Please don't hesitate to contact me PRIOR TO THE WORKSHOP to confirm that you are indeed prepared for doing the hands-on exercises during the workshop. GENERAL WORKSHOP NOTES: There is a fee of $400 per person associated with this workshop. The Photoshop Bootcamp workshop comprises two sessions (Session 01, November 22nd, and Session 02, November 23rd). The $400 fee covers participation in both sessions. For scheduling purposes, on Meetup.com, the workshop is broken up into two (2) sessions. You only need to sign up for Session 01 (November 22nd), you will AUTOMATICALLY be signed up for Session 02 (November 23rd). The following registration/cancellation policy is in place for this workshop: * The workshop fee is due upon signing up for the event. You will be contacted shortly after you register to make arrangements for processing payment. * Participant cancellations before October 22nd are entitled to a FULL refund of the workshop fee. Participant cancellations after October 22nd, but before November 15th, are entitled to a 50% refund of the workshop fee. Participant who cancel **after November 15th** will not be entitled to a refund of their workshop fee. A continental breakfast is available each morning of the workshop (Session 01, November 22nd, Session 02, November 23rd) and includes coffee, tea, juice, and water. Lunch time (12:00 - 1:00 p.m.) features a catered lunch on each day of the workshop (Session 01, November 22nd, Session 02, November 23rd) and includes a selection of beverages such as coffee, iced tea, soda, and sports drinks.

**Caller: Gaye Fifer** **Band: Hot Coffee Breakdown** **Big Scioty Contra Dance** **temporarily returning to our long ago location for Jan-March - First Congregational Church, 444 E. Broad St., Columbus 43215** WHAT IS CONTRA DANCING? Picture the Grand Ball scenes like you’ve seen in period films such as “Pride and Prejudice”, where the dancers are lined up in long lines, across from each other. That’s English Country Dancing, the predecessor of contra dancing. Now, add moves like “swing your partner” and “do-si-do,” like you’ve seen in square dancing. Set it to fabulous, high energy, live music with fiddles, guitars, percussion and more, alá “Riverdance.” Finally, set the whole scene down in the middle of Woodstock, with a hip, groovy atmosphere, a bit of tie-dye, and hints of counter-culture attitude. THAT’s Contra Dancing! Wear cool and comfortable clothes (you will get warm) and clean shoes that won't mark up our nice wood floor. Be sure to come for the beginner's lesson from 7:30 - 8:00, followed by dancing 8:00 - 10:30. All dances are taught; we will help you learn! Beginners always welcome, no need to bring a partner. Cost is $10.00 adults, $5.00 ages 12-26. Under 12 free. Free parking in church lot. For more information contact me or check out our website: [www.bigscioty.com](http://www.bigscioty.com/) Please bring your own refillable water bottle. Snacks to share are always welcome!