Blog-of-gain

A tech-oriented blog from a Linux user


Latest blog updates

2020-08-31Motu M4 review: Add note about fixed duplex sound support.
2020-06-06Resizing KVM disk images: Add how to remove Windows recovery partition.
2020-05-11Converting modules into bitstream format: Add case study: Unreal Tournament soundtrack.
2020-04-12Of life and love: New article.
2019-12-31Uupumus - burnout (in Finnish): Lisätty loppuvuoden tilannepäivitys.

Filtering by tag: audio

Converting modules into bitstream format

A study on tracker music conversion

Preview

If some of your favourite songs happen to be originally tracker music, you must have wondered what would be the best way to convert them into bitstream format. I did an empirical study about it. Read on if you, too, sometimes bang your head to a power plant techno.

Updates

2020-05-11Add case study: Unreal Tournament soundtrack.

Motu M4 review

With measurements and Linux notes

Preview

As new motherboards don't have a PCI bus anymore, finding high-quality, low-latency audio devices that work in Linux might be hard. Released in November 2019, the Motu M4 promises class-compliance, low latency and superb sound quality. How does it measure against its specifications in practice? Read the article to find out.

Updates

2020-08-31Add note about fixed duplex sound support.
2020-06-06Add note about systemd and realtime audio.
2020-04-13Add more Linux compatibility tests and notes.
2020-03-31Add note about switching the sample rate.

Detachable cable and wireless mod for the AKG K701 headphones

Tested with the new FiiO BTR3 (a review)

Preview

For a long, long time I've been thinking of modifying my original Austrian-made AKG K701 headphones to have a detachable cable. After owning the headphones for eleven years, I finally did it. At the same time I kind of made them wireless using the new FiiO BTR3. Check out the article to see how they fit together.

Bluetooth audio in Linux: ALSA and LDAC

Audio using pure ALSA (no PulseAudio) and LDAC codec

Preview

Ever since Bluez dropped support for Bluetooth audio using ALSA, people have been using PulseAudio to connect audio devices in Linux. However, there's a project called BlueALSA which supports high-quality cutting-edge codecs such as LDAC, and it works with pure ALSA. Read the article to see how to use it.

A review and comparison of headphones and earphones

I bought the Urbanears Sumpan and was surprised

Preview

After finally buying a tablet computer I realized I'm missing a certain type of earphones to use with it. I bumped into the Urbanears Sumpan on sale and decided to try them out. Check out the article for a comparison between the AKG K701 headphones, the Shure SE215 LTD in-ear monitors, the Sony SBH70 Bluetooth earphones, and the fancy Urbanears Sumpan earphones.

How to join a Skype for Business meeting from Linux

Summary: use a Windows virtual machine

In a previous article I discussed KVM and its audio capabilities. As of now there still isn't a nicely working emulated audio device for Windows 10 guests let alone a working Skype for Business client for Linux. In my day job I have to attend Skype for Business (formerly Lync) meetings quite often but it was impossible using my work laptop, which has Linux. I finally took the time to check out how USB passthrough works in KVM and solved the problem. Read the article to see how.

Updates

2018-09-08A note about a new work laptop.

Sony SBH70 bluetooth earphones review

...with a bit of modding too, of course

Preview

I wanted to have new earphones I could use when walking or doing sports. One of the requirements was they should be open design. I ended up buying the Sony SBH70 bluetooth earphones, found some shortcomings and tried to fix them with a little bit of modding. Read the full article to see some custom wingtips.

Easy acoustic tweaks for your room

Stopping flutter echo, equalizing with ALSA and gstreamer

Preview

Most mortals have to listen to music in a somewhat small room - a closed space, which will usually result in boomy bass at some frequencies, and terrible flutter echo in the upper end of the audible spectrum.

Read this article to find out quick and cheap tricks to remedy the problems.

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