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: Linux

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.

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.

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.

Asus should focus more on ergonomics than style

An Asus UX305CA laptop review by a Linux user

Preview

The Asus UX305CA promises good features, nice display, great looks and very light weight. Find out from this article how it has delivered in practice, and how it has worked running Xubuntu.

Updates

2019-07-29Add note about fixed Wi-Fi.
2018-09-08Add note about broken Wi-Fi.
2017-05-18Add notes about use in practice.

Configuring ALSA for pro hardware setups

Advanced .asoundrc / asound.conf examples

Nowadays most Linux distributions probably use PulseAudio for audio. In my opinion, not that long ago it was completely unusable. I still do not use it on my main rig, and find it mostly an unnecessary piece of software that potentially creates latency or configuration problems. In most cases, you usually don't really need it. In this article I'll show some tricks on how to write a killer ALSA setup. Recommended for audiophiles, movie lovers, recording artists and other crazy folks.

KVM networking

Bridge setup and remote desktop connection

In this article we will setup a network bridge for use with KVM virtual machines and use RDP to connect to the guest for effortless workflow. We also discuss some problems you might encounter with the RDP connections.

Updates

2017-09-09Updated network script.
2016-10-11Add note about Windows RDP finally working.
2016-07-12Add bridged network instructions.
2016-03-25Add note about UTC clock in Windows guests.
2016-03-15Add note about Windows enterprise edition.
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