# PaSSBot — stochastic filter bank > Stochastic filter bank audio processor for iPad with advanced sound manipulation features. (iPhone/iPad app by SonicPlanet Audio Video Teknolojileri Anonim Sti..) - Source: https://appshunter.io/ios/app/passbot/id1557720096 (this page in markdown: same URL + `.md`) - Developer: [SonicPlanet Audio Video Teknolojileri Anonim Sti.](https://appshunter.io/developer/946568989) - Category: Music, Entertainment - Price: $34.99 - Rating: 5.00/5 from 8 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 11 MB - Released: 2021-03-12 - Data updated: 2026-06-30 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/passbot/id1557720096/reviews.md ## What is PaSSBot? PaSSBot is a unique stochastic filter bank audio processor. The desktop VST/AU version of PaSSbot has already arrived in February 2020 and this iOS version is equivalent to the latest version 2.1. PaSSBot filter types are Biquad, StateVariableFilter, Ladder, SEM and Resonators. With behaviors of bandpass, Lo + Hipass, Notch and up to 64 of them in true stereo ! The user can set values of center frequency, gain and resonance of the each filter, which will be then eloborated with powerful stochastic generators ( 4 independent GENs for each filter ) with continuous or discrete probabilistic distributions but also with standard waveforms. One can set each filter parameters individually, but also distribute them in harmonic order, again the harmonic spread ratio can be set by the user or even can be modulated by a GEN. Precision DSP rendering, less than 1milisec. control rate precision. The filters can run continuously or be triggered manually. In that case, each filter will be applied an independent AR envelope with configurable random duration. Important notes : - A recent iPAD model is being recommended and also setting the host buffer size to 128 or higher greatly helps to the CPU needs which also heavily depends on the number of parallel filters being used. - The resonators can be sensitive to input signal level. - The PaSSBot manual can be found at this link. https://www.sonic-lab.com/PaSSBot_files/PassBot_manual.pdf sonicLAB PaSSBot youtube playlist : https://www.youtube.com/playlist?list=PLP0cOkraQHDYUoMG6BETTN1eGm-Kq5z0T ## Key features - Stochastic filter bank audio processor - Multiple filter types (Biquad, Ladder, SEM, Resonators) - Up to 64 filters in stereo - Powerful stochastic generators - Individual filter parameter control - Harmonic distribution options - Precision DSP rendering (<1ms control rate) ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/passbot/id1557720096/reviews.md ### 5/5 — All products Developer interaction *2022-08-14* First class **Developer response:** thank you ! ## Frequently asked questions about PaSSBot ### What is PaSSBot? PaSSBot is a unique stochastic filter bank audio processor designed for iPad. It allows users to manipulate audio with various filter types and advanced stochastic generators for complex sound design. ### What filter types does PaSSBot offer? PaSSBot includes Biquad, StateVariableFilter, Ladder, SEM, and Resonator filter types. These can be configured as bandpass, Lo + Hipass, or Notch, with up to 64 filters running in true stereo. ### How does PaSSBot handle filter parameters? Users can set individual filter parameters like center frequency, gain, and resonance. These can be elaborated with powerful stochastic generators, offering continuous or discrete probabilistic distributions, or standard waveforms. ### What are the system requirements for PaSSBot? A recent iPad model is recommended for optimal performance. Setting the host buffer size to 128 or higher is also advised to manage CPU usage, which depends on the number of parallel filters used. ### Can PaSSBot filters run continuously? Yes, the filters can run continuously or be triggered manually. When triggered manually, each filter applies an independent AR envelope with configurable random duration. ### Is PaSSBot available on other platforms? The desktop VST/AU version of PaSSBot was released in February 2020. This listing is for the iOS version, which is equivalent to the latest version 2.1. ### How much does PaSSBot cost? PaSSBot is a paid application, priced at $34.99. There are no in-app purchases or subscription options mentioned. ### Does PaSSBot have ads? No, PaSSBot does not contain advertisements. It is a premium application focused on providing a full audio processing experience without interruptions. ## Version history (last 4 releases) ### 2.0 — 2024-09-16 A SEM filter implementation has been added offering BandPass, Lo+Hi and Notch type of filters. One can arbitrarily define the tuning scale root frequency. The standalone version of PaSSBot can now export and import preset bank files directly from its PaSSBot document folder, which is easily accessible with the iPAD Files app. ### 1.2.0 — 2021-09-27 offers iOS15 compatibility, fixes a preset selection issue on 12" iPAD models. ### 1.1.0 — 2021-06-11 Now PaSSBot is contained in a horizontal and vertical scrollable view port. Some UI retouches has been added. ### 1.0 — 2021-03-12 No release notes. ## More apps by SonicPlanet Audio Video Teknolojileri Anonim Sti. - [VOLBot](https://appshunter.io/ios/app/volbot/id1537234760) - [VOLBotClient](https://appshunter.io/ios/app/volbotclient/id1537236121) - [Fundamental2](https://appshunter.io/ios/app/fundamental2/id1602995010) - [StarWaves](https://appshunter.io/ios/app/starwaves/id1616373918) - [ThermoSynth](https://appshunter.io/ios/app/thermosynth/id1619491705) All apps by SonicPlanet Audio Video Teknolojileri Anonim Sti.: https://appshunter.io/developer/946568989 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-30.*