Hacker Public Radio

• HPR4415: Sony WH-CH700N A2DP stops working in Fedora

  This show has been flagged as Clean by the host. After updating the firmware on my Sony Noise Cancelling Headset, and upgrading to Fedora 40 , my A2DP ) profiles stopped working. I did a quick search and found someone with the same issue and it would be fixed in a Kernel upgrade. Common enough on a bleeding edge that is Fedora, however as the months moved on and the kernel upgraded, the problem remained. I tried to implement workarounds several times but eventually came across this passage from hank aka hankuoffroad on the Fedora Forums This is a known behavior when using Bluetooth audio on Linux on hands-free mode: you cannot use A2DP for high-quality audio output while simultaneously using the Bluetooth microphone via HSP/HFP, due to profile limitations in the Bluetooth specification and current Linux audio stack. I knew this of course, but my Sony WH-CH700N Wireless Noise Cancelling Headphones don't have a microphone. ... Hold on how does Noise Cancelling work exactly again ? Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first Wikipedia If the first is the background noise, it needs a microphone to capture it so it can be inverted. Ah ha...I had recently also disabled my Zoom H2v2 as it was now sometimes acting as a speaker. So presumably pipewire tries to find any microphone on the system, when it cant find the best one it will resort to the one used for noise canceling in the headset. Once the headset is been used for audio in as well, then there isn't enough bandwidth to do high definition audio, so you end up with the low quality two way profiles. Would the solution be as easy as enabling a proper microphone . . . . Provide feedback on this episode.

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• HPR4414: Bellroy Tech Kit Review

  This show has been flagged as Clean by the host. Having purchased a new cable bag from Bellroy at the start of the year, Kevie shares his thoughts on the Bellroy Travel Kit . Provide feedback on this episode.

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• HPR4413: KDE custom shortcuts are easy and useful

  This show has been flagged as Clean by the host. If you go to the system settings in the main menu for KDE and scroll down, you can get to shortcuts and under shortcuts, there is a thing called custom shortcuts, and you can do anything you want in here. Provide feedback on this episode.

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• HPR4412: Parkinson Tribly's Story: The Prisoner of Unit 731

  This show has been flagged as Explicit by the host. The program starts with a brief trailer, presenting the story, before starting the full audiodrama... I hope you have a good show, thanks in advance for listening. References (some): LIANG, Jiashuo. A History of Japan’s Unit 731 and Implications for Modern Biological Warfare. Advances in Social Science, Education and Humanities Research, v. 673. Atlantis Press, 2022. PBS. The Living Weapon: Shiro Ishii. Link: https://www.pbs.org/wgbh/americanexperience/features/weapon-biography-shiro-ishii. Accessed: January 2025. RIDER, Dwight R. Japan’s Biological and Chemical Weapons Programs; War Crimes and Atrocities – Who’s Who, What’s What, Where’s Where. 1928 – 1945. 3rd ed., 2018 [“In Process” version]. Credits of audio used — in order of appearance (or “listenance”): Kulakovka / Pixabay – Lost in Dreams (abstract chill downtempo cinematic future beats). BBC Sound Effects – Aircraft: Beaufighters - Take off. (Bristol Beaufighter, World War II); Army: Parade Ground Manoeuvres - Platoon strolls single-file on parade ground; Weather: Snow - Blizzard - heard inside house, with banging shutters; Footsteps In Snow - Footsteps in snow, 3 men departing; Water - Filling metal bucket from pond and pouring water on to concrete. florianreichelt / Freesound ¬– quick woosh. Thalamus_Lab / Freesound – Vertical Noise_Chinese Folk Duo Decay. neolein / Freesound – Mystic chinese guzheng. BBC Sound Effects again – World War 2 - Enemy artillery (World War II actuality) - 1975 (500S); Aircraft: Beaufighters - Exterior, steep climb. (Bristol Beaufighter, World War II). JamesFarrell_97 / Freesound – Game Theme. Luke100000 / Freesound – turning old pages. BBC Sound Effects – Sirens & Gunfire - World War II Air Raid Siren, German, all clear sounded. Gvidon / Pixabay – Spinning Head. * If you'd like the script to read (along with a few other things, like the Audacity project), you can obtain the text at the production's page on Archive.org: https://archive.org/details/the-prisioner-of-unit-731-audiodrama-final * As a post-show extra: you can listen to the producer's motivation for producing this story on ep. 4313. hpr4313 :: Why I made a 1-episode podcast about a war story: https://hackerpublicradio.org/eps/hpr4313/index.html Provide feedback on this episode.

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• HPR4411: The Pachli project

  This show has been flagged as Clean by the host. In this episode Dave and Kevie chat with Nik from the Pachli project. Pachli is a free/open-source Mastodon/Fediverse client for Android. We talk in depth about Nik's background, Pachli's name and origin, and the motivation for creating another client for the Fediverse. Also discussed is Pachli's association with the Nivenly Foundation , and how users and developers can contribute to the project as a whole. With thanks to Nik for his time and candor. Fediverse: @[email protected] Fediverse: @[email protected] Email: [email protected] Website: pachli.app GitHub: pachli-android Provide feedback on this episode.

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