Michał Dziwisz

What I do

I don't separate work from passion. Below are the things I create, co-create and maintain.

  • TyfloPodcast

    A podcast platform about technology and accessibility for blind and partially sighted people. I am its founder and editor-in-chief.

    Technologies: WordPress, PHP

  • Radio DHT

    An internet radio station and its main channel. I am a co-creator of the channel format.

    Technologies: Astro, Cloudflare, HLS

  • Utilitia Access

    A tool for auditing digital accessibility. It analyses websites and documents against standards (WCAG, PDF/UA).

    Technologies: Python, FastAPI, PostgreSQL, Docker, Playwright

  • SARA

    Simple Accessible Radio Automation, an accessible radio automation system. Open-source software written in Python.

    Technologies: Python, wxPython, BASS

  • TyfloCentrum

    TyfloPodcast clients for three platforms: Windows, Android and iOS. The interface is designed for accessibility and screen readers (NVDA, TalkBack, VoiceOver).

    Technologies: .NET 8, WinUI 3, Kotlin, Jetpack Compose, Swift, SwiftUI

  • Podróżnik

    An accessible frontend for e-podroznik.pl: a connection search and stop timetable, friendly to screen readers.

    Technologies: PHP

  • Programista

    An app for viewing TV and radio programme schedules, friendly to screen reader users.

    Technologies: Python, wxPython, SQLite

  • SHAQ GUI

    A set of accessible Windows GUI apps for music recognition (Shazam): from a file, from audio input or output, and updating “now playing” on Shoutcast and Icecast streams.

    Technologies: Python, wxPython, shazamio, FFmpeg

  • WinBrowser

    An accessible Windows GUI browser for Usenet newsgroup archives (Usenet Archive Toolkit).

    Technologies: C++

  • W Deseń

    A website for Monika Machul’s craft studio “W Deseń”. I built it with the Astro framework and additionally created a convenient tool that lets the author publish photos of her work herself: adding them, organising them into categories and pushing them live without touching any code.

    Technologies: Astro, Cloudflare

  • Apollo

    An NVDA driver for the Dolphin Apollo 2 hardware speech synthesizer (and Juno). It lets you use these synthesizers as the voice of the NVDA screen reader. Distributed as an NVDA add-on.

    Technologies: Python, NVDA API, pyserial

  • PDF Signature Remover

    A simple, accessible (NVDA/JAWS) Windows app for removing all digital signatures from PDF files.

    Technologies: Python, wxPython, pikepdf

  • Czyściciel

    A Windows app that automatically removes filler sounds like “um” and “uh” from speech recordings and shortens overly long pauses. It detects them locally, on the user’s own computer, with the classla/wav2vecbert2-filledPause AI model (nothing is sent to the cloud). The edited recording sounds natural, the app itself is fully accessible to screen readers, and it can export a ready-made Reaper project.

    Technologies: Python, wxPython, PyTorch, ONNX Runtime, FFmpeg

  • Franken FDK AAC

    A laboratory AAC audio encoder for power users. It takes the Fraunhofer library (libfdk-aac) and exposes its normally hardcoded internal decisions as command-line switches: per-band joint stereo control, SBR density, parametric stereo, noise shaping, core bandwidth cutoff and much more. A tool for experimenting with and inspecting what the encoder does on its own. Subject-matter consultation: Patryk Faliszewski.

    Technologies: C++, libfdk-aac

  • Bookamp & Bookbar

    DSP plugins for listening to audiobooks, podcasts and spoken-word recordings: Bookamp for Winamp, Bookbar for foobar2000. They smoothly change tempo without changing pitch, pitch without changing tempo, and a “tape” mode that moves both at once. They have two time-stretch engines, optional loudness leveling and speech intelligibility enhancement, plus keyboard shortcuts. The interface is bilingual and fully accessible to screen readers. Subject-matter consultation: Patryk Faliszewski.

    Technologies: C++, Winamp SDK, foobar2000 SDK, SoundTouch, Bungee

  • QAT (Winamp & foobar2000)

    QAT (Quality Audio Tester) is a minimalist DSP plugin with no window and no settings, controlled with two keys, available for Winamp and for foobar2000. It is meant mainly for checking the mono compatibility of a recording: the Q key switches between stereo, the mono sum and the difference signal, and the W key toggles speech clarity. Subject-matter consultation: Patryk Faliszewski.

    Technologies: C++, Winamp SDK, foobar2000 SDK