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by Eirikur
Fri Jul 12, 2019 2:02 am
Forum: Graphics, sound and multimedia
Topic: Audio-hat better than built-in audio for ordinary internet radio streams?
Replies: 12
Views: 513

Re: Audio-hat better than built-in audio for ordinary internet radio streams?

"USB devices should not exist at all....." Gee, flexibility is more the point than price. Pick your DAC chipset and you can probably find a USB dongle with it on Ebay or Aliexpress. USB gives you the option of having multiple audio devices, which is useful for conferencing and professional audio. Th...
by Eirikur
Wed Jul 10, 2019 9:31 pm
Forum: HATs and other add-ons
Topic: Using a tablet battery as a power bank for Pi
Replies: 2
Views: 283

Re: Using a tablet battery as a power bank for Pi

I would be very careful before ordering a 'USB power bank' for running a Pi other than the Zero. Find one that has positive reports for powering your model of Pi. I had zero luck except on the Zero. The DC power from cheap power banks isn't very good DC and it would not run a Pi 3B+ for me. I only t...
by Eirikur
Wed Jul 10, 2019 9:01 pm
Forum: Graphics, sound and multimedia
Topic: Audio-hat better than built-in audio for ordinary internet radio streams?
Replies: 12
Views: 513

Re: Audio-hat better than built-in audio for ordinary internet radio streams?

Audio person and somafm lover here. HDMI audio is fine and there are little boxes you can buy with RCA connectors to get the audio. The Pi uses a kludge to produce audio for the jack on the board. There is no proper DAC chip--it would add cost and take up room. People like us can use USB audio adapt...
by Eirikur
Wed Jul 10, 2019 8:53 pm
Forum: Graphics, sound and multimedia
Topic: Choppy audio in Raspberry Pi using Python sounddevice
Replies: 1
Views: 169

Re: Choppy audio in Raspberry Pi using Python sounddevice

Are you booting from USB? Is the green LED on your Pi flashing in a regular heartbeat pattern? There's a problem that causes audio dropouts because of the cutesy heartbeat they added if you are booting from USB. A realtime (preemptable) kernel will fix this. I haven't built one for Buster yet. Build...
by Eirikur
Wed Jul 10, 2019 8:49 pm
Forum: Other projects
Topic: Raspberry PIpe Organ
Replies: 10
Views: 638

Re: Raspberry PIpe Organ

I did a lot of work for my own music keyboard. I will share what worked for me and eliminated a lot of the tricky stuff. I wound up using LinuxSamper, which I had to patch (tiny patch) and build for the Pi. It is NOT too big for a Pi, even a Pi 3B+. Once you have LinuxSampler working, all you need i...
by Eirikur
Tue Jul 02, 2019 12:29 am
Forum: Off topic discussion
Topic: Seeking recommendations for USB 3 to SATA
Replies: 4
Views: 1006

Re: Seeking recommendations for USB 3 to SATA

I have the JMicron JMS578 chipset in Orico and Acasis enclosures. This chipset is recommended on the Armbian forums and I've never had a problem with it. I'm using 2.5" SSDs. I want to switch to M.2 format but I haven't yet. Whatever solution you look at, check to see if it supports UASP. blog.start...
by Eirikur
Mon Jun 03, 2019 9:21 pm
Forum: HATs and other add-ons
Topic: Analog Output hats
Replies: 3
Views: 458

Re: Analog Output hats

Just search for USB recording audio DAC. Many have inputs. You don't actually need a hat. Lots of people swear by the cheap Behringers. I hear good things about the UM2, which is cheap, brand new. Googling, I found this sale. That UCA202 there looks just like my Phonic DigiTrack boxes that I like a ...
by Eirikur
Fri Oct 05, 2018 10:59 pm
Forum: Media centres
Topic: PI3B + VLC + Stereotool... performances issue
Replies: 5
Views: 1960

Re: PI3B + VLC + Stereotool... performances issue

Seconding the recommendation of top and htop. htop's graphic bars make it easy to understand. Glances is very heavy but fully-featured program for looking at what your Linux computer is doing.
by Eirikur
Fri Oct 05, 2018 10:56 pm
Forum: Other projects
Topic: making a digital piano : is the rpi fast enough ?
Replies: 13
Views: 2554

Re: making a digital piano : is the rpi fast enough ?

I come from an electronic music background and I've built my own keyboard design. The Pi (especially 3B+) is plenty fast enough. How do you want to make the piano sound? Physical models are pretty difficult to program. I use Linuxsampler (which I have to patch for ARM and build) and I find that it p...
by Eirikur
Sun Sep 09, 2018 9:51 pm
Forum: Advanced users
Topic: New RT (Real Time) kernel branch
Replies: 42
Views: 13618

Re: New RT (Real Time) kernel branch

I want to thank PhilE and everyone who worked/works on this kernel. I built it today and it solved my problems and I'm sure it will help out in other cases in my music keyboard application. Ironically, my problem was audio stuttering caused by the heartbeat LED blinking that enabling direct booting ...

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