blokas

Meet pisound!

pisound is an ultra-low latency high-quality soundcard and MIDI interface specially designed for Raspberry Pi pocket computers. Equipped with 192kHz 24-bit Stereo Input and Output driven by the legendary Burr-Brown chips, DIN-5 MIDI Input and Output ports, user-customizable button and bundled software tools, this little board will bring your audio projects to a whole new level!

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Connect Your Gear

pisound allows you to connect a huge variety of different types of audio-related gear. Thanks to wide-range gain control, you can connect audio sources ranging from your bass guitar to a CD player or your modular synth. Using Stereo Output you can hook pisound to any mixer, speakers or just plug in your headphones. For MIDI connectivity you also have a lot of options - MIDI In/Out through on-board DIN-5 sockets, USB-MIDI via Pi's USB ports or even WiFi-MIDI!

The Button

When we were designing pisound one of the main goals was to empower everyone to use pisound and Raspberry Pi in headless mode - without an external monitor, keyboard or mouse.

As it turns out, one button is all you need to achieve this and we call it The Button.

Its functionality can be customized according to your needs. By default using The Button you can open patches straight from a USB thumb drive, safely close them, shut down the Raspberry Pi and even launch “pisound” Wi-Fi hotspot, so that you can connect to the device via SSH, VNC or send WiFi-MIDI messages directly to your Pi using smart phone or tablet.

Our favorite use-case for it - you can run your Pure Data patches, without any need to connect a display, keyboard or mouse, just by plugging in a USB drive containing “main.pd”, any optional MIDI controller / keyboard, click The Button once and Voilà!

* Triple-click WiFi hotspot works with Raspberry Pi 3 & Zero W out of the box. Other versions require SoftAP capable USB WiFi adapter to be plugged in.




Make things!

Using pisound you can turn your Raspberry Pi into a music instrument or effect, audiophile network player, portable recording studio, internet radio station or anything you can think of as long as it's audio related!

pisound works great with Raspbian, ArchLinux, Pixel, Ubuntu Mate, Audacity, Pure Data, Sonic Pi, SuperCollider, Volumio and any other Linux software!

Setup is Eaaasy!

pisound mounts directly onto Raspberry Pi, no additional power adapter or soldering is required. Connect it to the Internet and enter a few commands in a terminal window.

wget http://blokas.io/pisound/install-pisound.sh -O install-pisound.sh
chmod +x install-pisound.sh
./install-pisound.sh

And that's it. Done. Thank You! Now you can choose pisound as your main sound card and use it with any Linux Audio/MIDI software.

Specs

We used the legendary Burr-Brown Op-Amps, ADC and DAC chips in this little board to ensure flawless signal amplification and conversion. Of course, everything is hooked to the dedicated ultra-low noise power supply in order to get maximum signal fidelity and minimum interference.

Furthermore, unlike usual MIDI solutions for Raspberry Pi ®, MIDI on pisound is implemented using high speed SPI and a dedicated MCU for translating SPI data to serial MIDI byte streams and it's readily recognized in audio software as an ALSA Raw MIDI device.




Audio Parameters Value
Input Type ¼" (6.35mm) Stereo
Output Type ¼" (6.35mm) Stereo
Input/Output Resolution 24bit
Sampling Frequency (Fs) 48kHz, 96kHz, 192kHz
Input/Output SNR @ 1kHz 110dB *
Input Impedance 100kΩ || 2pF
Input Gain (G) 0dB to +40dB
Input Clip LED Yes
Input Clip Voltage 5V (Peak to Peak) *
Full Scale RMS output @ 1kΩ 0V to 2.1V
Loopback Bandwidth (-3 dB) 7.5Hz - 23kHz *
Loopback THD @ 1kHz < 0.045% *
Loopback Latency 2.092ms **
Phantom Power None

* Conditions - G = 0dB, Fs = 48kHz
** Conditions - Fs = 192kHz, Pi Model = 2, Buffer Size = 128 Frames

MIDI Parameters Value
Input/Output Connectors DIN-5 Female Sockets
MIDI Loopback Latency 2.105ms
Activity LEDs Input & Output



Other Parameters Value
Power Powered by Raspberry Pi
Current Draw < 300mA @ 5.1VDC
Dimensions 56mm x 100mm
Weight 67g


Want to know more?

Head straight to our documentation page or to our community forums. If the questions is urgent, You can chat with us here!

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