Published versions

Version	Date
v2.0.0	2023-12-12	Documentation	Download
v1.0.3	2022-11-10	Documentation	Download
v1.0.2	2022-10-10	Documentation	Download
v1.0.1	2022-07-21	Documentation	Download
v1.0.0	2022-05-02	Documentation	Download
v0.6.3	2021-09-04	Documentation	Download
v0.6.2	2021-09-02	Documentation	Download
v0.6.1	2021-08-15	Documentation	Download
v0.6.0	2021-08-11	Documentation	Download
v0.5.2	2021-05-29	Documentation	Download
v0.5.1	2021-05-11	Documentation	Download
v0.5.0	2021-04-27	Documentation	Download
v0.4.2	2021-01-13	Documentation	Download
v0.4.1	2020-12-27	Documentation	Download
v0.4.0	2020-11-19	Documentation	Download
v0.3.2	2020-09-24	Documentation	Download
v0.3.1	2020-07-21	Documentation	Download

Changelog

v2.0.0

New features:

• Add dynamic range compressor.
• Add websocket commands to read peak and rms history.
• Add ToggleMute websocket command.
• Add AdjustVolume websocket command for relative volume changes.
• Better handling of USB gadget in Alsa backend.
• Add option to bypass pipeline steps.
• Bluetooth capture support on Linux via Bluez.
• Updated resampler with faster lower quality options.
• Higher precision of biquad filters.
• More flexible configuration of resampler type and quality.
• Allow setting optional config parameters to null to use default value.
• Add "Dummy" convolution filter type for easier CPU load testing.
• Add title and description fields to various parts of the config.
• Gain can be specified in dB or linear scale.
• Websocket command to reset clipped samples counter.
• Add an always enabled default volume control.
• Add several volume control channels (faders).
• Change Loudness filter to only perform loudness compensation.
• Add more ditherers.
• Add GeneralNotch biquad type.
• Add Tilt equalizer biquad combo.
• Add GraphicEqualizer biquad combo.
• Support rate adjust for BlachHole on macOS.
• Add statefile for persisting runtime parameters to file.
• Websocket command to get pipeline processing capacity utilization.
• Add commands to read statefile path and updating status.
• Improved handling of config changes via SIGHUP and websocket.

Changes:

• Optimize cpu load in general, and of dithering and delay filters in particular.
• More logical names for dither types.
• Updated Shibata dither coeffients.
• Rename Set/GetConfigName websocket commands to Set/GetConfigFilePath.
• Removed redundantchange_format parameter to simplify CoreAudio device config.

1.0.3

Bugfixes:

• Volume and Loudness filters keep mute state on config reload.

1.0.2

Bugfixes:

• Optimize inefficient peak and rms calculations.
• Switch to stable compiler for release builds, fixes memory leak in pre-built v1.0.1 binary on macOS.

1.0.1

Bugfixes:

• Alsa: Avoid opening capture and playback devices at the same time since this causes trouble with some devices.

1.0.0

New features:

• New improved CoreAudio backend.
• Switch to faster logging library.
• Improved support for Wasapi loopback capture.
• Add "Stalled" state.
• Some Mixer parameters made optional.
• Delay value can be given in millimetres.
• Improved Alsa backend.
• Handle subnormal numbers in IIR filters (Biquad and DiffEq).

0.6.3

Bugfixes:

• Fix slow start with Alsa plug devices (regression in 0.6.2).

0.6.2

New features:

• Updated wasapi library.
• Add FivePointPeq biquad combo.
• Support wav with extended header.

Bugfixes:

• Stop properly after failing to start with bad wasapi config.

0.6.1

New features:

• Add lists of supported device types in help message.

Bugfixes:

• Fix broken Wasapi shared mode.
• Correct "built with features" list in help.
• Correct list of supported device types.

0.6.0

New features:

• New Wasapi backend with support for exclusive mode and loopback.
• Do proper shutdown on SIGINT (ctrl-c).
• Add StopReason websocket command.
• Add GetPreviousConfig websocket command to get the previously active config.
• Add option to stop on detected sample rate change.
• Add support for rate adjust on the ALSA USB gadget capture device (introduced in kernel 5.14).

Bugfixes:

• Add missing token handling in .wav FIR coefficient filenames.

0.5.2

New features:

• Peaking, Notch, Bandpass and Allpass filters can be defined with bandwidth.
• Highshelf and Lowshelf can be defined with Q-value.

0.5.1

New features:

• Add JACK support.
• Add GetSupportedDeviceTypes websocket command.

Bugfixes:

• Handle wav files with extended fmt chunk.
• Don't allow starting with zero channels.

0.5.0

New features:

• Add RMS and Peak measurement for each channel at input and output.
• Add a Volume filter for volume control.
• Add exit codes.
• Adapt check output to be more suitable for scripts.
• Search for filter coefficient files with relative paths first in config file dir.
• Add ShibataLow dither types.
• Add option to write logs to file.
• Skip processing of channels that are not used in the pipeline.
• Update to new faster RustFFT.
• Overriding samplerate also scales chunksize.
• Use updated faster resampler.
• Enable experimental neon support in resampler via neon feature.
• Add Loudness volume control filter.
• Add mute options in mixer and Gain filters.
• Add mute function to Volume and Loundness filters, with websocket commands.
• Add debug feature for extra logging.
• Improve validation of filters.
• Setting to enable retry on reads from Alsa capture devices (helps avoiding driver bugs/quirks for some devices).
• Optionally avoid blocking reads on Alsa capture devices (helps avoiding driver bugs/quirks for some devices).
• Read FIR coefficients from WAV.
• Add subsample delay.

Bugfixes:

• Don't block playback for CoreAudio/Wasapi if there is no data in time.
• Validate silence_threshold and silence_timeout fields.
• Fix panic when reloading config if a new filter was defined but not added to the pipeline.
• Check for mixer parameter changes when reloading config.
• Token substutution and overrides also work via websocket.
• Don't exit on SIGHUP when waiting for a config.
• Fix handling of negative values when reading filter coeffs in S24LE3 format.
• Gain filters react to mute setting on reload.
• Fix noise in output when resampling and muting all channels in mixer.
• Fix handling of negative values for input and output in S24LE format.

0.4.2

Bugfixes:

• Fix random garbage output when using the Stdout playback device.

0.4.1

Bugfixes:

• Fix incorrect config checks for LinkwitzRiley and Butterworth biquads.

0.4.0

New features:

• New commands to get more playback information from the websocket server.
• Changed all websocket commands to use Json input and output.
• Added optional support for secure websocket connections (wss).
• Rename the optional websocket to feature to websocket.
• Add new optional feature secure-websocket for wss support.
• Added an option to generate arbitrary length filters for testing convolution cpu load.
• Possible to use Reload command to restart from inactive state.
• Handle quirks of the USB audio gadget when used as Alsa capture source.
• Add loglevel option.
• Use local time instead of UTC in log messages.
• Add command line options to override some parameters.
• Add substitution of $samplerate$ and $channels$ tokens in config.

Bugfixes:

• Better handling of input device errors, fixes 100% cpu usage after panic.
• Use Instant instead of SystemTimeto avoid issues when system clock is changed.
• Fix 100% cpu when Stdin doesn't provide any data.
• Reduce cpu usage when using PulseAudio.
• Fix buffer size handling for alsa capture.
• Fix high frequency noise from synchronous resampler.

0.3.2

New features:

• New commands to get more information from the websocket server.
• Possible to skip lines or bytes in coefficient files.
• Updated Cpal library.
• Added capture and playback devices Stdin & Stdout.
• Improved error messages.
• Improved validation of mixer config.
• Added option to set which IP address to bind websocket server to.

Bugfixes:

• Fix websocket exit command.
• Correct response of setconfigname websocket command.
• Fix buffer underrun soon after starting Alsa playback.
• Correct scaling of FIR coefficients when reloading config.

0.3.1

New features:

• Rate adjust via the resampler also for Wasapi and CoreAudio.