Julia Academy bundles interactive notebooks with instructor videos so you can follow along at your own pace. We now have five courses spanning from a basic introduction to machine learning and advanced parallel computing. We hope that making these courses and their materials free to use and share will help you all continue learning (or teaching!) the language.
@mbauman Dear Matt, I was checking your Flux introduction course, and I noticed that the sound is low in volume, and there is slight background noise. If you like I can help you fix the sound. I am also an audio engineer besides being a programmer
Just interested, to what extent can the quality of audio be improved?
I’ve tried a couple of times to remove background amplifier noise from speech in Audition, but it always led to some distortions in speech.
Another time I tried to recover audio written with recorder sensivity set to minimum. It had dynamic range of just one bit, so high amplitudes were modulated by 1-bit impulse trains - but could not demodulate that to a comfortable level of understanding.
The audio of the Flux course was very clean and because it is just speech, I would say perfectly! But I haven’t listened to the other ones.
It isn’t just noise cause the source was quite good, but the main thing was that the audio was low in volume, which I can fix it by compressing and limiting.
As long as we have good headroom and the audio isn’t clipping, we can do a lot with it
Could you give a bit more details about the plans for Julia Academy? Will Julia Computing add other courses in the future which are not free, which will then be made free after some time? Or will all future content be free? If all future content will be free, have you considered moving it out of JC and under the JuliaLang umbrella?
So I fixed the parallel computing sound to a some degree. The background noise is also fixed.
Other than the first lecture, all the others were low passed very aggressively at 5 KHz, so I added some artificial information above 5KHz. It adds clarity to the speech. I will send the new videos to @mbauman, so he uploads them
Not sure if you could fix the issue. Nevertheless wanted to report it as I would love to try out the courseware.