I am an engineer specializing in Acoustics, Digital Signal Processing (DSP), and Embedded Audio Systems. My current focus is on developing open-source tools for real-time audio analysis, high-fidelity recording on micro-computers, and hardware-accelerated signal processing.
Through MakerPortal, I build and document systems that interface MEMS sensors with Python for scientific and engineering applications.
- Digital Signal Processing: Real-time FFTs, noise subtraction, frequency spectrum peak detection, and acoustic filtering.
- Hardware Interface: I2S MEMS microphones (INMP441, SPH0645), PDM-to-PCM conversion, and Raspberry Pi/ESP32 audio pipelines.
- Visualization: Developing high-speed Python tools (Matplotlib, PyAudio, OpenCV) for spectral and waveform visualization.
- Acoustics: Sound pressure level (SPL) measurement and spatial audio analysis.
A comprehensive suite for recording and analyzing stereo audio using I2S microphones. Includes real-time Python visualization and automated frequency analysis.
Used extensively for real-time acoustic monitoring, this lightweight tool allows for low-latency streaming of audio signals and sensor data.
Implementing MicroPython-based visualizers for embedded displays, turning small microcontrollers into portable audio analyzers.
- Languages: Python (PyAudio, NumPy, SciPy), C++, MicroPython.
- Tools: Linux Audio (ALSA/Jack), Git, Matplotlib, OpenCV.
- Hardware: Raspberry Pi, Arduino, ESP32, I2S/PDM Microphones.
Check out some of the open-source tools I've built through my organization:
| Project | Stars |
|---|---|
| I2S Audio Analysis |  |
| Thermal Camera System |  |
| MPU9250 Calibration |  |
| Real-time Data Plotter |  |
- Acoustics & Tech Blog: makersportal.com
- Professional: LinkedIn: Joshua Hrisko
- Twitter: @maker_portal
"Turning vibrations into data, and data into insights."