More DX goodies!

Just in, a Beitai SNT-D06 mini PC which set me back a whopping €33,-! What do you get for this price:

Chipset Rockchip RK3066
CPU CORTEX-A9
Processor Frequency 1.2GHz
GPU Mali 400
Memory DDR3 1GB
Storage 4GB
Wi-Fi IEEE 802.11b/g/n
Video Output HDMI
Audio Output HDMI
Other Interface

1 x USB host, 1 x Mini USB port, 1 x TF card slot

Let’s see if we can get Picuntu running on it and turn this baby into a Raspberry Pi killer.

Edit: I could’ve just bought an UG802 but at least I got it with an EU adapter. Other than that the device seems exactly the same. Debian Wheezy runs like a charm on it. More on that later.

More DX goodies!

LAC2013: Saturday 11th of May

Somehow I managed to arrive just in time to set everything up for my workshop, like always. I’m very good at stumbling in at the very last moment. The Nvidia binary blob didn’t like a beamer attached to it so I couldn’t properly display my slides. The well-filled room didn’t seem to care, they were more interested in what I had to say and the equipment I brought with me. I talked and talked and only briefly demonstrated the Raspberry Pi I brought with me. Guess I could’ve done a whole workshop about the RPi because apparently that little device caught most of the attention.

Right after my workshop I rushed to Rui’s intercalated workshop about the software he develops. I missed his first workshop which took place on Thursday. But since Rui had so much more to show after that initial workshop the LAC2013 organization decided to allot him more time for an extra workshop. But I also didn’t want to miss Jörn’s workshop so I decided I also wanted to see part of that workshop too. Even though I’ve been using Rui’s software for years (I’m a QA, Qtractor Afficionado) he showed things I had never seen before. And I probably attended one of the best parts of Jörn’s workshop where he showed and made us listen to what he did with a live recording. An ear opener, really, amazing what you can do with a good pair of ears, years of experience and the right tools.

Then it was lunchtime already. Missed out on the warm lunch but when that was all cleared the alternative food stand was set up again which had probably even better food. They had great salads, fruit juice, bread and other tasty things, all for free. Many, many thanks to the organization for setting this up, it really added up to the overall positive vibe of the conference.

Now I had a bit of a problem. I needed to go to the Forum Stadtpark to do a sound check for the Linux Sound Night. But walking was not an option with all my stuff and public transport would take too long as there was no direct connection. Luckily I could tag along with the guys from SuperDirt² so I hopped into their car and off we went. SuperDirt² had to play last so they did their sound check first. I watched their sound check in awe, these guys were good! I was up next. Everything went smooth, monitors were good, the sound guy was a really cool guy and so was the stage manager for the event. All omens were very positive!

We got back right on time for Albert Graef’s talk on creating LV2 plugins with Faust. We witnessed a glimpse of the future. If I got it right it will be extremely easy to create your own LV2 plugins in the near future. Just throw some Faust code against it and upload it with your browser and within moments you can download your own LV2 plugin! Time to learn some Faust I guess. One lightning talk later we witnessed another glimpse of the future. No, not my acrylic guitar in the hands of Bruno Gola but the world premiere of the MOD Quadra digital pedal board. The excitement was tangible. But the MOD guys quite easily redeemed the high expectations. The MOD Quadra is simply an amazing device, the web GUI looks stunning and it’s all so easy. And it runs on Linux people, using the LV2 framework. If this doesn’t propel LV2 into mass adoption then what?

For dinner we ended up in a nice Italian restaurant. The Gösser tasted good, same for the dish I ordered (Calamari alla griglia). After dinner we walked to the Forum Stadtpark where we were welcomed by the pleasant chaos of Android drummers. I installed the app and joined the concert. It was fun. Then the beamer got switched on showing us two terminal windows with vim on the right side and something compile-ish on the left. On stage a person in front of a notebook, coding live. The result? Really cool stuff if you ask me, just watch for yourself.

Algorave to the max all y’all!

Then it was time for something remotely dance related, namely me. Really enjoyed the gig even though my voice let me down after the third song. The guy that came after me unfortunately was a bit the odd one out so the contrast with the last act, SuperDirt², couldn’t have been bigger. As soon as Käpt’n Dirt hit the strings of his cello we knew this was going to be a blast. And when Ras Tilo kicked in the party was complete. What a great show!

After the encore of SuperDirt² it was time for the Open Jack Session. Not Jack as in JACK but Jack as in 3.5″ mini-jack. It was lying there on the table on stage and after ClaudiusMaximus Marije Baalman plugged in. Live coding in SuperCollider with every once in a while Marije stretching her arms because of the anti-RSI alarms that kept popping up. Great stuff, very enjoyable to listen to and the added humorous note of the anti-RSI alarms perfectly summed up what this conference was all about: having a great time. Despite the submerging inebriation I was enthralled.

We stayed until we got kicked out. That’s how it should be. Sole minor blemish: the beer. That Murauer stuff was close to undrinkable.

LAC2013: Saturday 11th of May

New notebook: BTO P•BOOK 17CL45-GT650 i7 QUAD

Yay, got a new notebook, a BTO P•BOOK 17CL45-GT650 i7 QUAD! I visited BTO last Tuesday and placed an order for a custom built notebook and it arrived yesterday. It’s quite a monster if you ask me:

  • Intel Core i7-3630QM Quad Core Processor (6MB Cache, 2.3 GHz, Turbo Mode 3.3GHz)
  • 16GB RAM
  • 120GN SSD
  • 1TB HDD
  • Nvidia GT650M

One of the reasons I chose BTO besides the fact that they offer custom built notebooks is that they also offer the choice to have your custom built notebook come without an OS. Unfortunately it came without a license, in other words, when I first started the notebook it booted into a Windows 7 installation procedure. No biggie, created a bootable USB stick with the Ubuntu 12.04 mini ISO and wiped all partitions. 20 minutes later I could boot into a fresh Lubuntu installation. And you know what? All the essential stuff worked out of the box! So far the following things just work:

  • Network, both WiFi and wired
  • Sound
  • Webcam
  • Fn buttons
  • Display
  • Suspend to RAM

The only real challenge is probably getting the Nvidia Optimus configuration to work but I already found some very specific documentation. Yes, the BTO is actually a Clevo W170ER housing with custom hardware.


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BTO P•BOOK 17CL45-GT650 i7 QUAD/Clevo W170ER

Other than that the BTO was a breeze to set up and it happily runs Lubuntu 12.04. Booting into a complete desktop takes less than 15 seconds at the moment. Next up is configuring it properly for real-time, low-latency audio. If I want to get the most out of it I’ll probably have to start looking for a decent USB2.0 audio interface. The BTO has no FireWire or PCI Express ports. A sign of the times, guess FireWire is basically dead technology.

New notebook: BTO P•BOOK 17CL45-GT650 i7 QUAD

LAC2013: Friday 10th of May

“Hello, I’d like to know if I can take my electric guitar with me as hand luggage, would that be possible?”
“Well that depends on the whims of the cabin crew.”
“So if I can’t take it with me in the cabin would that cost me extra?”
“Yes, that will be €200.”

So I decided to take my guitar apart, wrap it in a big towel and put in my suitcase so that I could take it with me as standard baggage. I didn’t want to run the risk of having to pay €200 extra. When I arrived at the airport I was sitting next to a young lady with, yes you guessed it right, a guitar as hand luggage. She didn’t have to pay anything extra. Grmbl. You’ll see that when I unpack my stuff in Graz the neck of the guitar will be broken or something. Let’s hope not.

I had a transfer in Munich which went smoothly. The whole journey went smoothly actually. Thanks to 3G internet, QR codes of my tickets sent to my mobile phone and Google maps. Especially those QR codes are very practical, they save time and paper. Every counter and gate has QR scanners and the personnel just puts your mobile phone in the scanner and you’re done. Maximum efficiency. Google maps helped me out on quite some occasions too although the Grazians were very helpful too.

So on Friday around 2 PM I walked into the main conference building. I couldn’t be there on Thursday because of my son‘s birthday. So I already missed quite some interesting workshops, presentations and lightning talks. I was kind of bummed about that at first but as soon as I entered the building I forgot about all that. It was still lunch time and everyone got together in the main building to eat something. It was a warm welcome and great to see all those people again. I immediately spotted the MOD guys (my goal for this LAC was to get a MOD endorsement) and got acquainted with the one and only Kirill Alferov which was quite a nice surpise. After having something to eat I decided to check on the status of my guitar and to put it back together again. Luckily the guitar had survived the journey unharmed.

As soon as I started screwing the neck back on the MOD guys approached me to ask if they could borrow my guitar for their lightning talk on Saturday. Sure, but only if I could play around a bit with the MOD Quadra they brought with them. This was no problem so a few minutes later I found myself happily noodling and tapping footswitches on this amazing device. Even though it still had some rough edges it all felt, looked and sounded very professional to me. Yes, the MOD is a fine example of my view on Linux audio development: world domination. And I mean it. Within 10 years Windows and Mac OS will only exist for tablets or other small portable devices with touchscreens and Linux will be the only viable alternative on both other ends of the scale: embedded devices and fully fledged audio workstations in professional studios.

Right after that I headed off with Marc Groenewegen to the Linux/Ardour in a Recording Studio workshop where I soon found myself going through the mixing console manual together with Frank Neumann to find any references to GPL clauses as the console was running on Linux (see how quickly world domination is approaching already?). Of course we found nothing. The workshop was a bit too specialized for me so I decided to check in at the hotel and get rid of my baggage. The plan was to eat Schnitzels for dinner but when it was time to go to the restaurant it was pouring so we (me, Funs & girlfriend) arrived at the restaurant completely soaked. But I couldn’t care less when I got served my Schnitzel XL with a big pint of Puntigamer.

After dinner we went to the Mumuth. Amazing building. But me and electroacoustic music don’t go together that well. It’s not that I don’t like it. I’ve seen Sachiko M once and she blew me away with just a sine wave out of a sampler. Not just with the sine wave but more with her performance, her being there and getting totally absorbed by the sounds she was making. They had to carry her off the stage after she was done. Well, that didn’t happen at the Mumuth. Or I should’ve stayed until the end because now I’m basing my judgement on a mere three perfomances because I left earlier as I didn’t really dig the vibe.

LAC2013: Friday 10th of May

LAC2013: some videos

I’m planning on writing a nice and lengthy epistle on LAC2013 but for now you’ll have to do with some videos captured by rncbc and alg0rhythm. Thanks for uploading the vids!

The Infinite Repeat – Leave It All Behind

The Infinite Repeat – Nervous Walking

The Infinite Repeat – Slow Down

Using your electric guitar with Linux – workshop excerpt

Buschenschank Acid Crew

Creative Commons License All tracks by The Infinite Repeat are licensed under a Creative Commons Attribution 3.0 Unported License.

LAC2013: some videos

Switching to English

During LAC2013 it became clear to me that I have quite some non-Dutch blog readers. So I made up the balance and decided to switch to English as the main language for this blog. Other factors that got me around:

  • Blogging in English will hopefully improve my proficiency of the Englsih language
  • There are more people doing Linux audio that master English than those that master Dutch
  • Apparently I write articles sometimes that deserve some broader attention
  • The main language within the Linux audio community is also English

So there we are, I’m going to start writing English blog posts from now on. The blog itself will go into a transitional phase now, I have to translate some captions and I need to rethink the whole category and tags part of the blog.

Switching to English

MOD – your next digital pedalboard

Tja wat moet ik hier nou over zeggen? Check het zelf uit, fantastisch idee, een digitale gitaar FX processor die geheel op Linux draait en gebruik maakt van het LV2 plug-in framework.


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MOD Quadra prototype

En ja het is de bedoeling dat dit apparaat echt in productie gaat. Er worden er binnenkort 35 gemaakt, zou er graag een willen hebben uiteraard, maar zal een aardig prijzige aangelegenheid worden. Heb me ingeschreven op de mailinglist dus we merken het wel. I’ll keep you posted.

Site: http://www.portalmod.com/en/index.html

MOD – your next digital pedalboard

Raspberry Pi als virtuele gitaarversterker: MIDI en effecten

Live demo van m’n Raspberry Pi, guitarix en een MIDI floorboard.

Raspberry Pi als virtuele gitaarversterker: MIDI en effecten

Raspberry Pi als virtuele gitaarversterker

M’n Raspberry Pi in actie als virtuele gitaarversterker. Er draait Raspbian op met een gepatchte versie van Jack1 en de laatste versie van guitarix. Als geluidskaart gebruik ik m’n good old Edirol UA-25. Systeemlatency is 256/48000×3 = 16ms. Ik kan nog wat lager (8ms) maar dan trekt de RPi de preset die ik in dit videootje gebruik niet meer.

De gepatchte versie van Jack1 en de laatste versie van guitarix kun je in mijn RPi audio repository vinden. Staan ook nog wat andere pakketjes in die of nog niet beschikbaar zijn in de standaard repositories van Raspbian of die wat meer up to date zijn dan de  Raspbian pakketten. Hoe je die repository kunt toevoegen kun je terugvinden in mijn Wiki artikel Raspberry Pi and real-time, low-latency audio op linuxaudio.org.

Ben erachter gekomen dat ik niet de enige ben die hier mee bezig is, er is zelfs iemand die er een complete site aan het wijden is: Amp Brownie – Building a Raspberry Pi Guitar Rig

Raspberry Pi als virtuele gitaarversterker