Summary

Dan Boschen demonstrates a practical sonification of a 160 MHz Wi‑Fi7 OFDM packet by scaling RF wavelengths into the audible band. The blog explains the signal-processing chain—downconversion, decimation/time-scaling, FFT-based spectral analysis, and filtering—so readers can reproduce the audio rendering and interpret its spectral features.

Key Takeaways

• Explain how to map a 5 GHz, 160 MHz OFDM waveform to audio by scaling time/frequency to preserve relative subcarrier spacing and wavelength relationships.
• Demonstrate a processing chain: RF capture or simulation → baseband downconversion → anti-alias filtering → decimation/time-scaling → audio rendering.
• Use FFT and spectrogram analysis to visualize OFDM structure (subcarriers, cyclic prefix, pilot tones) before and after sonification.
• Apply windowing and filtering choices to minimize aliasing and perceptual artifacts when converting wideband RF signals into audible signals.
• Provide reproducible tips and parameters (sample rates, decimation ratios, filter specs, STFT settings) to recreate the sonification with real captures or simulated Wi‑Fi7 packets.

Who Should Read This

Intermediate DSP and communications engineers, audio hackers, or RF hobbyists who want hands-on methods to convert wideband OFDM waveforms into audible signals and analyze their spectral content.

Still RelevantIntermediate

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