JAX Convolutor PE (Audio Unit)

March 3, 2024

The product (AudioUnit AUv3) was updated for support of latest Apple technologies and frameworks (architecture: arm64). Minimal iOS target is still 12.0. It also should work on the Vision Pro (compatibility mode).

January 14, 2020

Maintenance update version 1.95 This version of the free JAX Convolutor PE was synchronized with the current release of the JAX Convolutor PRO.

January 10, 2020

Maintenance Update Version 1.9 - We synchronized the everything with the current release of JAX Convolutor PRO Please read JAX Convolutor PRO release notes.

January 8, 2020

Version 1.8 Performance & Maintenance Update JAX Convolutor is due to its processing architecture an audio unit that requires larger rendering buffers in general. Please read the articles on our website https://midi.digitster.com - A factory preset loading problem was corrected. The default factory presets were all initialized to zeroes, which resulted in silence after selection. There are no useful presets yet either. This will be implemented with the PRO version. Background: AUv3 does not allow to save IR files or file names with the presets, only floating point parameters are supported. This is a huge problem and it's unthought. We currently solved this by creating an internal database, where only an index to the IR file is saved with the presets. IR files are automatically registered upon import and a unique index number is assigned. But if the IR file is deleted manually i.e., this index may become invalid. - We changed the Audio Unit to support 48000 Hz. Previous version were rendering at 44100 Hz. This change was made for the reason, that all latest Apple (PRO) devices are fixed to 48000 Hz system sample rate per default. Possibly this will lead to slightly higher CPU usage on older Apple devices, as these use 44100 Hz per default. - We provided the included IR files for native support of 48000 Hz, 32 bit floating point data. JAX Convolutor does still convert all IRs when importing to 32 bit data audio, which is the native processing format in iOS. These files will load faster and prevent conversion upon loading. Please note, that old distributed files may be misinterpreted in length now. - Latest 'black hat' optimizations were removed and replaced with some 'gray hat' optimizations, reducing current CPU impact (of latest version 1.7) again. Technically we reduced the convolution range by disabling convolution processing for (nearly) inaudible frequencies. This still reduces entire possible quality but may deliver significant better quality than the competitors by reducing the CPU hit significantly. Rather than processing milliards of inaudible samples per second and wasting precious CPU. Our JAX Convolutor is a special realtime stereo to stereo processing unit (was originally thought as a True Stereo convolution, using 4 different (or even just more) convolution channels). That means there are at least 2 completely independent *dynamic* convolution engines for the right and the left input channels, that should be processed thru a high quality stereo IR at least, making it suitable for using as a mastering reverb for instance. So our audio unit will use twice as much performance as some other, ... eeerrrm ... much more simple, static convolution effects. It also very much depends on the used realtime parameters which and how many convolutions are involved and how these are mixed together, this is the main reason for higher CPU usage, because it's a highly dynamic convolution approach. Users have the possibility to control CPU hit manually by using our advanced S.R.C. technology (Selective Range Convolution) with range filter 2. This filter has some noticeable latency. S.R.C. is in fact a FFT filter, implemented directly into the convolution kernel, reducing the convolution CPU hit this way (the selective frequency range being effectively convoluted). If that does not work for you, please use the other filter modi, which are build on an analog models, better for realtime automation and more drastic results. - Parameter smoothing for all realtime convolution parameters was implemented to prevent the automation zipper noise. - Advanced direct MIDI automation will be implemented into JAX Convolutor PRO only. [ insufficient space / for complete description please go to our product website ]

January 2, 2020

Version 1.7 Maintenance Update - There was a broken piece of code due to a forgotten debugging option, that prevented the processor to apply S.R.C. on both stereo channels. Only the left stereo channel was processed with our 'Selective Range Convolution'. The right channel always was processing with full range convolution. This has been fixed now. - The S.R.C filter range parameters have been adjusted to a more logarithmic scale. Selective Range Convolution is our special optimization technology for full convolution processing, which implements a range filter directly into the kernel of the convolution processor. This filter is able to perform additional filtering of the reverberation effect along with a significant reduction of the entire CPU load. - We increased the loudness of the resulting reverberation. Further Performance optimizations - We reduced the CPU usage by another (quite drastic) performance optimization. Also older devices should now be able to use JAX Convolutor PE. We assume, that most of the released competitor products do not really perform a full convolution but use some dirty tricks, merely doing a half convolution or another kind of reduced convolution processing... However, we are able do that too. But this will reduce the quality of the convolution. And we won't provide such software *silently hiding the facts* as being a high quality convolution processor. Please understand, that JAX Convolutor is a true stereo processing convolution effect, supposed to deliver highest quality. The JAX Convolutor Pro now includes the option to switch between performance mode and high quality mode. JAX Convolutor PE uses this optimization per default.

January 1, 2020