Category: Embedded

Allow choice of 2 or 4 pipelines, in addition to banks of 8. Bug fixes.

Fix DAC detection over NAA link. Fix regression in matrix configuration. Minor fixes.

New major feature; DAC specific output signal corrections!

Allow switching PCM/SDM mode and output rate on the fly. Free up ALSA device when not in use. Bug fixes and component updates.

Add option for running pre-processing before or after metering. Bug fixes and component updates.

Make number of DSP pipelines configurable. Support for Fedora 39. Ubuntu packages renamed. Number of small improvements, bug fixes and component updates.

Support for NAA v5 protocol. Detection for apodizing errors in upsampled content. Extended settings on HQPlayer OS. Small fixes and improvements.

Support for using E-cores as offload processors. Small fixes improvements.

New ultralight EC modulators for low power hardware, such as Raspberry Pi 5. Support for buffer level information. New low delay mode. HQPlayer OS upgrade. Bug fixes and component updates.

Fix regression on static sample rate inputs. Minor improvements and updates.

Support for new kernel USB Audio Class 2 device side driver with automatic rate change support. Add support for changing input rate through control API.

Two new experimental hybrid multi-level modulators for DSD1024+. Added option to convert parametric EQs to a convolution EQ with delay compensation. Added option to adjust engine idle time and fully enable idling feature. It is now possible to change filter/dither/modulator on the fly. Debian support moved to Debian 12 “bookworm”. Some USB dongle support improvements.…

Maintenance release. Redesigned IIR filter. Performance improvements, bug fixes and component updates.

Added refresh devices button to config page and setting to adjust FFT filter length. Enable number of PCM filters for SDM oversampling. Redesign IIR filter and add new IIR2 filter. Extended set of halfband filters. Make sinc-short/medium/long filters two-stage for SDM outputs. Performance optimizations. Component updates and bug fixes.

Major update of HQPlayer OS. Fixes for new AutoEq parametric EQ files, attempt to reduce timeout errors when source is Roon, various other fixes for specific cases. Component updates.

Minor light modulator tuning. Control API updates. Component updates. Minor fixes.

Better display of library scan progress. Performance improvements and minor fixes.

Performance improvements. Minor fixes.

First order low-pass and high-pass parametric EQ filters. Parametric EQ compatibility improvements. Minor improvements and fixes.

Several new filters and modulators, extended source content analysis and output metering, new CUDA offload capabilities.

Performance improvements, especially for cases when huge filters or convolution is run on CPU. Component updates and minor fixes.

Minor fixes. Component updates.

Small fixes and improvements. Component updates. Note! Port number of web interface on HQPlayer OS is now same as elswhere – 8088!

Added delay plugin to matrix. Component updates including CUDA 12 support, also on Fedora. Small fixes and improvements.

Bug fixes, especially related to track switches in certain cases.

Minor networking improvements for streaming. Bug fixes.

New build tooling for generic Ubuntu build. Increase number of channels/pipelines. Bug fixes.

Control API improvements. Support any picture as cover if specific one is not found. Support for favorites in library. Number of bug fixes. Performance optimizations and new tuning option. FLAC update to support higher sample rates and up to 32-bit word length. CUDA update to support new GPU generation. HQPlayer OS update and optional dynamic…

Streaming improvements, especially for Qobuz. Eject button for CD media. Bug fixes and component updates.

Bug fixes and component updates. Fix regressions due to missing output rate list in some cases, and ALSA driver behavioral change in latest kernels.

Bug fixes and component updates. Core usage improvements in certain cases.

Bug fixes and component updates. Note! This is last release to support Ubuntu Focal and Fedora 35.

Two new band-limiting SDM integrators. Support for selecting 1x and Nx filters separately. HQPlayer OS upgrade. Bug fixes.

New SDM integrator, three new DSD-to-PCM conversion noise filters. 20 kHz PCM source noise/distortion cleanup filter. Component updates and bug fixes. Support for USB license key dongles as an alternative for hardware fingerprint.

Bug fixes.

Fixes ALSA backend DoP support regression.

Add new XFi SDM rate conversion algorithm. Bug and compatibility fixes.

Add new poly-sinc-gauss-hires and sinc-Lx filters. Performance optimizations for EC modulators.

Support for arbitrary precision math. Component updates, minor improvements and fixes.

Workaround for certain buggy XMOS USB firmware versions. Minor bug fixes.

Minor optimization and bug fixes.

Add support for uploading playlists over control API. Add support for storing playlists in library. Component updates and bug fixes.

Support for newer REW 5.20 EQ parameters. Matrix pipeline fixes. New input ramp and tuned output ramp. Minor optimizations.

Fix regression streaming from certain types of UPnP/DLNA servers. Minor tunings.

Stream buffering improvements. Bug fixes.

New CPU core allocation algorithm. Preliminary support for 12th Gen Intel CPUs. HQPlayer OS updated and now includes also ssh client and server (requires configuration). Component updates and bug fixes. 100th build for Ubuntu milestone!

Hotfix for a deadlock problem.

Full support for bitrate metadata. Bug fixes.

Add support for MP3 format, including ICEcast streaming. HTTPS handling improvements. URL entry in web interface for stream URLs. Option for controlling MP3 decoder output format.

Fixed regression related to recent gapless UPnP changes.

Gapless UPnP playback fixes. Component updates. CUDA now supported also on Debian 11 build.

Add new ASDM5ECv2 and ASDM7ECv2 modulator variants. Add support for PCM gain compensation. Add support for RIAA EQ plugin. Improved web interface. Support TYER/TORY ID3v2.3 tags. Control API improvements. Sound quality improvements. Streaming improvements. Bug fixes. HQPlayer OS now ships with HQPWV control interface. CUDA is now supported also on Fedora 34 build.

Support for peak type EQ in loudness post-process plugin. Bug fixes.

Support for control API authentication and secure URIs. Component updates. Bug fixes. HQPlayer OS updated, including updated RAVENNA driver.

Add support for loudness post-process plugin. Add support for raw IIR biquad EQ. Bug fixes.

Bug fixes. HQPlayer OS back to SSE4.2 compatible build of hqplayerd. Stop hqplayerd service before updating the package!

Bug fixes.

New poly-sinc-xtr-short and poly-sinc-gauss filters. Improved apodization analysis. Bug fixes.

Detector to indicate need for an apodizing oversampling filter. New poly-sinc-ext3 and constant time sinc-Mx filters. Support for HTTPS network streams. Bug fixes.

Support AutoEq headphone parametric corrections. Bug fixes.

Extend DSP initialization cache coverage. Support GPUs on both Focal builds. Bug fixes.

Add DSP initialization cache for most time consuming algorithms. Optimizations and bug fixes. On HQPlayer OS mount option for old SMBv1 protocol shares.

Add support for plotting matrix filter responses. Add support for reading RoomEqWizard filter export text files to matrix. Fix IIR upsampling filter initialization.

Fixed occasional NAA playback start problem. NAA streaming optimizations.

Add two new SDM integrators and one new DSD noise filter. Fixed occasional NAA stop problem. Updated HQPlayer OS to new version.

NAA stop/restart regression fixed.

NAA streaming optimizations. Preliminary support for AMD GPUs on Ubuntu build.

Support for cover images in WavPack files. Performance optimizations, component updates and bug fixes.

Support for WavPack source format, for both PCM and DSD content. Parametric equalizers for matrix pipeline. Component updates, minor performance improvements and bug fixes. Distribution support updated to Ubuntu 20.04 LTS “Focal Fossa” and Fedora 30/33.

Added configuration for volume control range to the web interface. Quick pause option to use old style simple silence pattern for quicker pause in some cases. Short buffer option to use half size FIFOs for reduced delay. Alternate optimizations for various algorithms on Ubuntu and HQPlayer OS builds. Ubuntu Bionic build tested also on Ubuntu…

New pseudo-multibit AMSDM7EC modulator for certain DACs at x512 rates and above. Bug fixes and component updates. RAVENNA driver has been updated and available again on HQPlayer OS.

Bug fixes and support for CUDA 11. HQPlayer OS on x64 now includes support for exFAT filesystem. Also remember to try new HQPDcontrol v4 app version on Android and iOS!

New sinc-L filter. Allow different convolution filter sets to be uploaded for different profiles. HQPlayer OS update, with preliminary support for USB Audio Class 2 inputs. Bug fixes.

Fixes regression in minimum phase filter initialization. Add SetAdaptiveVolume method to the control API. Small fixes.

Add support for ReplayGain 2.0 metadata specification, album gain can be applied when loaded in album mode, in playlist mode track gain can applied. Add new sinc-S filter. Add PlayNextURI and LoadRemovable methods to the control API. Improve algorithm to combine multiple convolution filters. Parallelization consistency improvements. Bug fixes.

Support for chaining multiple convolution filters. Support for changing convolution algorithm and HF-expansion in pipeline matrix. Post-process support in pipeline matrix, with Bauer headphone cross-feed. Improved backup / restore functionality. Various metadata handling fixes. Small bug fixes and improvements.

HQPlayer OS improvements for booting from SD/MMC devices. Enable USB Audio Class 2 input support on Ubuntu and Fedora 31. Change output stream start/stop handling. Idle mode and metadata handling fixes.

Improved support for USB Audio Class 2 inputs to make HQPlayer look like a USB DAC, starting on Debian Buster with a custom kernel (on applicable hardware). Enable idling support again for faster track changes and restarts on UPnP. Optimizations for DSD source processing. Improved handling of NAA inputs. Set friendly name as title for…

HQPlayer OS update to fix issue with cover image display on clients, and some smaller fixes.

Support for NAA protocol version 4, including inputs. Support for composer as a separate tag and rework ID3v2 mappings. New LNS15 noise shaper designed specifically for 16x output rates. Support relative paths in playlist files and improve library web views. Number of smaller improvements and fixes.

Support for matrix pipeline profiles. Core allocation improvements. Allow specifying GPUs and reserved cores. Bug fixes and component updates. HQPlayer OS image for RaspberryPi 4.

Fixes inconsistent behavior on different systems when scanning library with non-ASCII file system items. Fixes failure on input device definition without explicit channel count. Small fixes and improvements.

Fixes a possible timing/race condition problem when starting playback on a Windows based NAA.

New poly-sinc-long filter completes set of three closely related filters. Small control API fixes and improvements. Improved core allocation for threaded dual-core processors. Reworked network streaming buffer with increased size. Major update of HQPlayer OS.

Volume management fixes for Direct SDM, CPU core allocation optimizations and fixes volume control from web interface while playing.

Performance optimizations especially for EC modulator use cases.

Three new very high accuracy modulator variants added. Various bug fixes and small improvements.

Further improvements to NAA connection handling. Control API fixes. HQPlayer OS image now contains necessary tools for SMB mounts.

Improved NAA (re-)connection procedure to allow starting up system in any order. Fixed NAA discovery problem. Improved library update scanning procedure. Added remove license key button to /key page.

Control interface extensions, new configuration options, component updates and many bug fixes. Now supports auto-discovery by HQPlayer Client. If you use “Auto rate family”, note the new “48k DSD” configuration option!

Allow linear scale factors in pipeline matrix setup. Added album-page on web interface allowing per-track selection and playback. First release also for ARM64 platforms (primarily for NXP i.MX8M SoC). Improved support for PCM rates above 1 MHz and DSD rates at or above DSD1024. Various bug fixes, improvements, and component updates.

Bug fixes, component and documentation updates.

Add track list and offload status on front page, and also CD and removable media on input page. Small adjustments to default configuration and number of bug fixes and component updates.

Added volume control to the front page. Fixes regression where matrix initialization fails without convolution filter.

Added new DSD-to-PCM rate converters. New and improved DSD-to-DSD rate conversion algorithms (two options). Display active cover art on front page. Built in configuration help pages. Support for DSD2048. Bug fixes.Bootable image is now dual-use and contains also NAA functionality.

Improved ALSA backend capabilities and added support using RME ADI-2 Pro as a fully capable input device with automatic rate switching. Library contents are now displayed on the library page with controls to play or queue an album. Front page now has basic playback controls. New limited HTTP control methods, new method to retrieve cover…

Released only as bootable image; experimental support for USB input.

Two new filters, poly-sinc-ext2 with special two stage design for SDM output mode and sinc-M one million tap sinc-filter. Old “sinc” filter has been renamed to more descriptive “ASRC”. Optimizations to CIC integrator for lower CPU load. New control interface methods to switch between time display modes.

Fixes for convolution and matrix configuration handling.

New “mega” variants of closed-form filter with one million taps for PCM and 16 million taps for SDM. Also includes bug fixes and updated GPU support.

Setting multicore DSP to enabled now goes full-on with all cores while auto setting calculates more adaptive work distribution strategy. Ubuntu package now contains some extra optimizations. Improvements in hardware/software combo volume control. Number of bug fixes and minor improvements.

Separate filter selection for sources at 1x rates and higher rates. Small networking optimizations for NAA. Web interface improvements; matrix setup, password change, log view, etc. Adjusted default modulator gain for PCM-to-DSD when DirectSDM is enabled.Product page now lists products with HQPlayer Embedded preinstalled; Estelon Lynx speakers, Small Green Computer sonicTransporter server, Pink Faun STREAMER 2.16 server

Modulator tunings and number of bug fixes.

Software platform for building embedded digital media players, digital audio processors and advanced A/D/A converters!