# This Camera SEES Sound Source: https://www.youtube.com/watch?v=fL1GB-3Bkwc Recap page: https://rapidrecap.app/video/fL1GB-3Bkwc Generated: 2026-02-21T18:34:14.068+00:00 --- ## Quick Overview The Fluke ii915 Acoustic Imager can visually map sounds, including those outside the range of human hearing (ultrasound), allowing for rapid detection of issues like compressed air leaks, which can cost around $45 CAD per year per leak, and also detect coil whine in electronics like a GPU, although its high-frequency focus makes detecting low-frequency sounds like faint liquid leaks more challenging. **Key Points:** - The Fluke ii915 Acoustic Imager overlays sound information onto a live video feed, creating a visual 'SoundMap' that highlights the source of noise. - The device excels at detecting ultrasonic sounds (2 kHz to 52 kHz, far above human hearing), which is ideal for finding compressed air leaks. - A small compressed air leak in the shop system, costing approximately $45 CAD/Year based on settings, was easily located using the imager. - The imager successfully located the source of coil whine (around 10 kHz) on an AMD Radeon RX 6970 XT graphics card, which is in the lower end of the device's detection range. - The device's ability to filter frequencies (e.g., setting the band between 15 kHz and 45 kHz) is crucial for isolating specific noise sources. - The acoustic imager's effectiveness is highly dependent on the noise frequency; while it excels at high-frequency leaks, it struggles with very low-frequency sounds like minor liquid drips unless the leak is significant. ![Screenshot at 0:27: The presenter holds up the $25,000 Fluke ii915 Acoustic Imager, emphasizing the high cost of the tool used for leak detection.](https://ss.rapidrecap.app/screens/fL1GB-3Bkwc/00-00-27.jpg) **Context:** The video demonstrates the capabilities and limitations of the Fluke ii915 Acoustic Imager, a $25,000 handheld device designed to visualize sound, primarily for industrial applications like finding compressed air leaks, but also tested on electronic components like a GPU experiencing coil whine. The presenter compares its utility to other acoustic detection methods, such as the open-source Sesenta array, and shows how to adjust settings like frequency bands and decibel sensitivity to pinpoint noise sources. ## Detailed Analysis The video explores the functionality of the Fluke ii915 Acoustic Imager, a device designed to visualize sound sources by overlaying a heat map onto a visual image, primarily targeting ultrasonic noises like compressed air leaks. The presenter initially demonstrates finding a small air leak on a regulator in the workshop's pneumatic system, noting that such leaks can cost around $45 CAD per year. The device uses 64 microphones arranged in a logarithmic spiral pattern to capture sound and employ beamforming algorithms to determine the source location. The demonstration shows the imager easily pinpointing the compressed air leak on the wall fitting. The presenter then tests the device on a high-end GPU exhibiting coil whine, successfully locating the sound source in the 10-15 kHz range on the back of the PCB, though noting that this lower frequency is near the edge of the device's optimal range. The discussion highlights that while the tool is excellent for high-frequency sounds, very low-frequency leaks (like a slow liquid drip) might be missed unless the leak is substantial enough to generate detectable ultrasound. The presenter also shows how to adjust settings, such as frequency bands and manual decibel range, to optimize detection. The video concludes with a humorous segment advertising the game War Thunder, implying the tool's utility extends beyond industrial settings, and also references a similar open-source project, Sesenta. ### Introduction to the Fluke ii915 - Demonstrating the device for finding a compressed air leak on a wall fitting - Highlighting the $25,000 price tag - Showing the visual SoundMap overlay ### Leak Detection Demonstration (Compressed Air) - Pinpointing a leak on a regulator fixture - Calculating potential annual cost of ~$45 CAD/Year for a small leak ### Testing on Electronics (Coil Whine) - Successfully locating coil whine on a loaded AMD Radeon RX 6970 XT GPU near 10 kHz - Discussing the limitation with lower frequencies ### Device Functionality and Settings - Explaining the 64-microphone array and logarithmic spiral pattern - Showing how to adjust frequency bands and manual dB settings for better isolation ### Comparison and Conclusion - Mentioning the device's ability to detect sounds beyond human hearing (up to 52 kHz) - Comparing it briefly to the open-source Sesenta array - Concluding that the tool is highly effective for high-frequency industrial leaks. ![Screenshot at 0:21: The presenter holds up the Fluke ii915 Acoustic Imager, explaining its function.](https://ss.rapidrecap.app/screens/fL1GB-3Bkwc/00-00-21.jpg) ![Screenshot at 0:28: The presenter displays a price tag of $25,000 next to the Fluke ii915.](https://ss.rapidrecap.app/screens/fL1GB-3Bkwc/00-00-28.jpg) ![Screenshot at 2:49: The acoustic imager display shows a sound map \(red/yellow hot spot\) on a wall fitting, indicating an air leak source.](https://ss.rapidrecap.app/screens/fL1GB-3Bkwc/00-02-49.jpg) ![Screenshot at 4:03: The imager overlay shows calculated leak data including LeakQ Scale \(2.6\), L/min \(~3.4\), and estimated CAD/Year cost \(~45\).](https://ss.rapidrecap.app/screens/fL1GB-3Bkwc/00-04-03.jpg) ![Screenshot at 8:59: The imager screen displays a sound map over a running GPU, indicating coil whine noise concentrated on the back of the PCB.](https://ss.rapidrecap.app/screens/fL1GB-3Bkwc/00-08-59.jpg)