PREEMPT_RT isn't Just for Lasers: The Perfect Match
summary
Debian images built with PDK run openMHA on a BeagleBone Black Wireless with a custom Cape4all 6‑channel I2S soundcard and Bluetooth battery hookups, using the Texas Instruments PREEMPT_RT kernel and JACK; real‑time tuning and cyclictest produce 4 ms latency at about 20% CPU for six channels of unoptimized research algorithms, and the Mahalia platform boots from SD or eMMC, exposes a Wi‑Fi hotspot and BLE control, and demonstrably processes live audio in the field.
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chapters (21)
- 0:00Introduction
- 0:23About 64 Studio
- 1:38About Daniel James
- 3:01Hearing Aids
- 3:50Hearing Loss
- 5:04Hearing Aid
- 5:25Analog Hearing Aid
- 6:16Digital Hearing Aid
- 7:43OpenMHA
- 9:30What happened in the lab
- 10:42The BeagleBone
- 12:16USB Audio
- 13:34BeagleBone Black
- 14:21Development Board
- 16:49Audio
- 17:20Latency
- 18:07Linux
- 19:00RealTime Kernel
- 19:41Troubleshooting
- 21:28Debian
- 27:41Technical Showcase
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