![]() The options for LMS/piCorePlayer are more work in progress than a ready to use solution at the moment. ![]() I'm not sure of the current state with Moode - I think the current (7.0.x) release has preliminary CamillaDSP support built in, but it's being heavily worked on for the upcoming 7.1.0 release so may be a moving target at the moment.īoth use MPD as their main player, so a remote app like Mopidy gives most of the control if you don't want to use the browser interface. The docs include a rough guide to using REW to make measurements and create the filters, and this is broadly applicable to the other options below. The volumio plugin is reasonably well documented but not the easiest to install. Hi-Fi Cast (UPnP Control point to browser and select music)Īlsaloopback (loopback of MPD output to brutefir input).īrutefir (FIR processing and output to USB DAC). I don't know if the FFT libraries that brutefir is using on the Pi4 are using the main CPUs, or are being offloaded to the GPU core or not, but I am very impressed with the performance ! Total CPU for the brutefir threads while streaming, as displayed by 'top' command, is around 10% !īrutefir is using 32 floating point for calculations throughout the chain from input to output, so I am not concerned about losing precision as the digital data goes through the multiple filter stages (does anyone think I am wrong about this ?). So a total of 7 FIR filters of 16k taps all running together at 44kHz. Output = 4 channels of 16bit 44kHz PCM to USB DAC(Xonar U7). Sub_Out = 16K FIR to average Left and Right then apply LPF 80Hz and DRC ![]() Right_Out = 16k FIR for 80Hz HPF and DRC Left_Out = 16k FIR for 80Hz HPF and DRC Treble tone control = (L and R) x 16k FIR (selected 1 of 3 preconfigured curves) Bass tone control = (L and R) x 16k FIR (selected 1 of 3 preconfigured curves) With this configuration I have never had any pop/clink issues, even while I perform additional task on the Pi4 like bulk copying of files onto it, or running GUI desktop. ![]() I started down a similar route to you last year so can provide some information on brutefir performance on the Pi4.īelow I detail the FIR processing chain I am currently using on the Pi4. A good example is the PE32LR parametric equalizer from the Linux Studio Plugins Project which provides the parametric equalizer for PulseEffects. Plus there's a whole host of LADSPA plugins you can use via JACK, alsaequal, or with a fixed configuration in the alsa config file. LSP (Linux Studio Plugins) is a collection of open-source plugins. Pulseaudio Parametric Equalizer is a python GUI to insert a 3 band PEQ w/ high/low shelves into the pulseaudio audio server. HQPlayer PEQ, a convolver with impulse response files, cross-feed and multi-channel support/mixing/routing. Oratory1990 is headphone specific equalization.ĪutoEq uses EQ profiles to be used with EQ software.įoobar2000 is an advanced freeware audio player with EQ runs under wine. REW is free room acoustics analysis software for measuring and analysing room and loudspeaker responses. The normal alsa config for ladspa plugins only allows fixed configurations, although for something like an active crossover that's probably an advantage. Basic usage is a fixed band graphic equalizer, but it can be used to give a control interface to any other LADSPA plugin via the usual alsa mixer interface. Jconvolver - formerly Zita-convolver, the convolution engine used in PulseEffects, which can also be used with JACK.Īlsaequal - an equalizer you can add to the alsa config. You can also use it to make crossovers.īrutefirDRC - the LMS plugin that uses BruteFIR running on the server, configurable per endpoint. Voicemeeter audio mixer application w/ virtual audio device used as virtual I/O to mix/manage any source from/to any audio devices or applications.īruteFIR - the convolution engine used by daphile, Volumio's DSP plugin, an LMS plugin and probably others, also manually configurable in a custom alsa config, JACK etc. MoOde audio player parametric and graphic Equalizers music playback for the wonderful Raspberry Pi family of single board computers. PulseEffects signal processing tools including parametric equalizer.ĬamillaDSP supported platforms: Linux, macOS, Windows.Ĭamillagui runs in the browser and handles the actual interface.ĭsp is an audio processing program with an interactive mode.ĭaphile is an audiophile class music server & player OS – targeted to dedicated headless PC. This will be organized as results come in. ![]()
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