hifiberrydsp 0.12.2

A DSP Toolkit

Software for HiFiBerry boards equipped with DSP. This package can be used to read/write data to HiFiBerry DSP boards using the Beocreate TCP server.

Installation

Before installing the dsptoolkit, you need to have a working Python 3 installation (>=3.5) and a working pip.

You can then install the toolkit by just running

sudo pip3 install –upgrade hifiberrydsp

This will only install the software, but not activate the server. Depending on your system, you might need to create a startup script or a systemd unit file for this.

If you’re using a Debian based system (e.g. Debian, Raspbian), there is a script that does all the work for you. Just run the following command:

bash <(curl https://raw.githubusercontent.com/hifiberry/hifiberry-dsp/master/install-dsptoolkit)

sigmatcpserver

This server runs in background and provides a TCP interface (port 8089) to access DSP functions. It is compatible with SigmaStudio. That means you can directly deploy DSP programs from SigmaStudio and change parameters online.

The server automatically dumps the so-called parameter RAM to the file system when it terminates. On startup, it checks for a parameter RAM file and if it exists it writes it back to the parameter memory. This ensures that parameters like volume controls, filter parameters, switch settings will be automatically restored even if they are not saved in the EEPROM.

The server accepts the following command line parameters:

-v

Verbose output.

--alsa

Create an ALSA volume control that is synced with the volume control of the running DSP program

Command line utility

The dsptoolkit command is the main command line tool to communicate with the DSP TCP server. The command line parameters are documented in doc/dsptoolkit.md

REW integration

The software can be used to push filters created by Room Equalisation Wizard (REW) to the DSP. Have a look at the guide in /doc/rew-basics.md

DSP profile format

DSP profiles can be generated directly in SigmaStudio. However, to enable the full potential of DSP Profiles and allow DSPToolkit to directly control the DSP program, you need to add some additional metadata to the XML file. The process to create a DSP profile is documented in /doc/dspprofiles.md