擋 Live 與 Podcast 內廣告的工具

看到「An adblocker for live radio streams and podcasts. Machine learning meets Shazam.」這個專案,這個把 machine learning 用到「正途」上了啊...

不過畢竟是比較複雜的演算法,會吃不少 CPU 資源:

On a regular laptop CPU and with the Python time-frequency analyser, computations run at 5-10X for files and at 10-20% usage for live stream.

不過看用法還是偏向 library 性質,如果要大力推廣可能還是需要有其他人包個更好的界面...

打破實體隔離限制傳遞資訊

GitHub 上的 fulldecent/system-bus-radio 這個專案可以打破實體隔離限制傳遞資訊:

Some computers are intentionally disconnected from the rest of the world. This includes having their internet, wireless, bluetooth, USB, external file storage and audio capabilities removed. This is called "air gapping". Even in such a situation, this program can transmit radio.

有些電腦因為種種因素而實體隔離 (像是因為安全因素,或是保密因素),於是就有人研究各種方法傳遞資訊。這隻程式利用 system bus 在 Macbook Air 上產生 AM radio 訊號:

And run it on an Apple MacBook Air (13-inch, Early 2015):

./main

Then use a Sony STR-K670P radio receiver with the included antenna and tune it to 1580 kHz on AM.

這方法好硬... 但也證明了可以藉由這種方法傳遞訊息。

Update:強者我同事 ccnTwitter 上找到一位日本人的 demo 影片: