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Posts Tagged ‘usb’

Record audio in good quality

April 13, 2017 Leave a comment

Problem
I wanted to create some simple tutorial videos using a screen recording software (with gtk-recordMyDesktop to be precise), but the audio quality was terrible. There was a constant white noise in the background. I could reduce the noise with Audacity but 1) I couldn’t eliminate the noise, 2) it distorted my voice, and 3) the audio became weaker.

Solution
I had a cheap headphone / microphone that was connected with a jack plug. I think there was also some inference that caused the noise. So I bought a USB headset (Logitech H390) and the damn noise is gone! It works very well for me.

I tried it under Manjaro and here is how to make it work. Plug it and start Audacity. Next to the microphone icon there is a dropdown list. Select your headset and try to record some audio.

Try “pavucontrol” too. Under the Recording tab I had to select “Headset H390 Analog Mono”. Talk in the microphone and the sound feedback line should be moving.

How to record audio with gtk-recordMyDesktop? Start “pavucontrol” and “gtk-recordMyDesktop” too. In gtk-recordMyDesktop, go to Advanced -> Sound tab. Next to the device name I had “DEFAULT”. Change it to “pulse” (without quotes). Start recording with gtk-recordMyDesktop. Now switch to pavucontrol and go the Recording tab. At the bottom select “Show: Applications”. Now recordmydesktop should appear. Next to it there is a dropdown menu where select “Headset H390 Analog Mono”. It should do the trick.

Ext4 file system is mounted as read-only

Problem
On my external HDD I created a new ext4 partition. When I mounted it, it was in read-only mode. What’s going on?

Solution

sudo chown -R username:username /place-to-mount

Ref.: ubuntu forum

Categories: ubuntu Tags: , , , ,

Recover images from flash cards

March 20, 2011 2 comments

The article “Recovering deleted images from flash cards” seems to address an interesting topic. I haven’t tried it yet but it might come in handy in the future…

In short: how to recover deleted files from a FAT file system.

Categories: Uncategorized Tags: , , , , ,

Wiki on a stick

January 21, 2011 Leave a comment

Wiki on a Stick (WoaS) is an Open Source web application that runs completely in your browser- you don’t even need an internet connection as it is all local. It consists of a large file with xhtml, css and JavaScript all embedded into it. It contains all the functionality to create, edit and maintain a wiki of multiple cross linked pages with all the formatting options available to webpages, including custom css and embedded graphic images.

If you are looking for an easy to use, portable way of documenting your work that can be moved easily between computers this is an excellent tool…” (quote from here)

If you need a very simple wiki to maintain a TODO list that you can easily use on several machines, try WoaS.

Review

For a detailed review, refer to this page.

Categories: Uncategorized Tags: , ,