The Most Annoying Computer Noise | Noctua Engineering Deep-Dive on Case Fans

Sponsor: Thermal Grizzly Aeronaut on Amazon & Hydronaut (Amazon) This engineering discussion features Jakob Dellinger of Noctua, who helps to explain an acoustic phenomenon we recently observed in a case review. The phenomenon has to do with the beat frequency observed from fan interactions. There are other types of annoying noises, such as vibrations, resonance, or coil whine, caused by computer parts as well; however, for beat frequency, it is specifically related to an undesirable interaction between two fans. This can happen in particular with CPU air coolers. With the inbound Noctua NH-D15 G2, the long-awaited cooler that is supposed to replace Noctua’s best CPU air cooler, this topic is fitting as it relates directly to the NF-A14 G2 fans. RELATED CONTENT Watch our “Forbidden Interview“ with Jakob of Noctua last year: Watch our video (also featuring Jakob) about Noctua’s pressure scan results and new Noctua NH-D15 G2: Find all of our engineering interviews here: The best way to support our work is through our store: Like our content? Please consider becoming our Patron to support us: TIMESTAMPS 00:00 - Woo Woo Woo 00:59 - An Annoying Fan Noise 01:59 - Beat Frequency Explained 10:30 - Case Panel Design: Slats vs. Holes 14:38 - Spectogram of NF-A14 G2 21:33 - How Do You Fix This Noise? 22:15 - Example Videos of Beat Frequency 26:35 - Schwebung 27:57 - Live Demo ** Please like, comment, and subscribe for more! ** Links to Amazon and Newegg are typically monetized on our channel (affiliate links) and may return a commission of sales to us from the retailer. This is unrelated to the product manufacturer. Any advertisements or sponsorships are disclosed within the video (“this video is brought to you by“) and above the fold in the description. We do not ever produce paid content or “sponsored content“ (meaning that the content is our idea and is not funded externally aside from whatever ad placement is in the beginning) and we do not ever charge manufacturers for coverage. Follow us in these locations for more gaming and hardware updates: t: f: w: Steve Burke: Host, Writing Vitalii Makhnovets: Camera, Editing Tim Phetdara: Editing