Voice Spectrogram Logger vs GraphWeave

1. DESPLAY The spectrogram of voice is displayed in the range of 20 - 2500Hz. You can zoom in/out the spectrogram by pinching in/out smoothly. Also landscape orientation is supported. 2. USEFUL By moving "vivid" slider, the gradation of spectrogram is controlled. The gradation is also controlled by moving "baseline" slider in "Setting" tab and selecting "Mean" or "RMS" as the way of smoothing the spectrogram out. 3. LOGGING When "log" switch is ON, this app runs in the logging mode. To choose a past log from "History" tab, you can pull it from iPhone via email as a PNG file. 4. AVAILABLE Without cellular data service, the full functions are available. The background processing is supported. 5. TECHNICAL NOTE Sample rate: 44.1kHz Bit depth: 32bit float FFT window function: Blackman FFT samples: 4096

GraphWeave lets you draw a network by hand and instantly see its geometric and structural properties, computed on the spot and shown in color. Place nodes and links with your finger, and discrete curvature and centrality measures appear right away. ■ Features • Sketch nodes and links directly; drag to arrange them freely • Discrete Ollivier–Ricci curvature for every link • Six node measures: degree, closeness, betweenness and eigenvector centrality, clustering coefficient, and PageRank • Links or nodes are automatically colored on a coolwarm (blue→red) scale, with numeric labels • Save graphs on your device and reopen them anytime to re-analyze • Works fully offline — no account, no network connection ■ Who it's for • Students and teachers learning graph theory and network science • Anyone who wants a hands-on feel for curvature and centrality • Researchers who need a quick look at the structure of a small network ■ Privacy GraphWeave collects no data. Your graphs are stored only on your device and are never sent anywhere. No ads. Metric definitions follow the open-source networkx implementations.