Add 8-pad radar drum machine (walabeat2_gui.py)#1
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Extends WalaBeat from 2 pads to 8 by dividing the sensor's field of view into a 4 azimuth × 2 depth grid: FAR [Crash] [Tom] [Ride] [Open HH] NEAR [HiHat] [Kick] [Snare] [Clap] New features vs the original: - Top-down radar fan visualisation in tkinter (no matplotlib) - Per-pad energy glow proportional to signal strength - Dead zones between adjacent pads to reduce cross-talk - Snare roll detection on sustained fast waves - generate_sounds.py: synthesises all 8 WAV files using only the Python standard library (no external tools needed) Audio via subprocess + aplay (avoids pygame .so loading issues on some Linux/ARM setups).
…clap fix - Live threshold slider adjusts sensitivity without restart - Auto-reconnect when sensor is unplugged mid-session - Hit counter in status bar + RESET button - Cross-platform audio: aplay/afplay/winsound, no extra packages - Fix: CLAP no longer misfires during snare roll (shared zone suppression) - Better synthesised sounds: kick/snare/clap layered, crash/ride with overtones - Updated README with cross-platform requirements
Radar signal attenuates ~R^4 with distance so far-zone pads returned much less energy than near-zone pads for the same hand movement. FAR_BOOST=3.0 scales far-zone energy before threshold and glow, making Crash/Tom/Ride/Open-HH as easy to trigger as the near pads.
The original WalaBeat used pygame.mixer which overlaps sounds on separate channels. We replicate that with a single persistent aplay process reading raw S16_LE from stdin and a mixing thread that sums all active wave streams each 512-sample chunk (~12ms). New sounds are added to the mix rather than competing for the ALSA device, so rapid hits and overlapping decays play naturally without cutting each other off.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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What this adds
A new script
WalaBeat/walabeat2_gui.pythat expands WalaBeat from 2 pads to 8 pads by dividing the sensor's field of view into a 4 azimuth × 2 depth grid:Features
generate_sounds.py— synthesises all 8 WAV files using only the Python standard library (no sox, ffmpeg, or other tools needed)subprocess+aplay(avoids pygame.soloading issues on some Linux/ARM setups)Requirements
Same as the existing WalaBeat: Walabot SDK +
WalabotAPIPython package +tkinter.Run
python3 WalaBeat/generate_sounds.py # once, to create WAV files python3 WalaBeat/walabeat2_gui.py