SonaLab - Real-Time Vocal Analysis Software
(((PHILOSOPHY)))

Core Philosophy · The Three Balances

Every SonaLab analysis converges on three judgments: Phonation Balance, Dynamic Balance and Airflow Balance. Parameters are the raw material, charts are the windows, balances are the verdict.

The three faces of the prism are Phonation Balance, Dynamic Balance and Airflow Balance. The base holds the voice parameters, the middle holds the charts, and near the apex sit the three balance judgments. Points along the edges are parameters shared by two faces — 42 nodes and 43 relations in all.

Drag to rotate · Ctrl+scroll to zoom · click a node for relations · filter by face (bottom-left)

Phonation Balance

发声平衡

Depth and ring together, held steady. The composite score reads resonance depth, singer’s formant and fold thickness, then subtracts compensatory throat tension.

Dynamic Balance

动态平衡

From soft to loud, brightness (SPR) stays on a level track — never suddenly dull and breathy, never squeezed and bright.

Loudness传入的音量。动态平衡看的是音量变的时候,音色有没有一起散掉或挤死。
Jitter周期间的音高抖动。过大说明声带振动不稳。
Shimmer周期间的振幅抖动。和 Jitter 一起读声音稳不稳。
Vibrato rate颤音每秒来回的次数。稳定颤音大约落在 5.5–7.5 Hz。
Vibrato extent颤音上下偏离音高的幅度,通常大约 ±25–50 音分。
Loudness meterchart实时音量。动态平衡图的横轴就来自这里。Waveformchart振幅随时间的变化,先看见强弱,再看音色有没有跟着变形。StabilitychartJitter、Shimmer 和颤音是否还在可控范围。Vibrato trackerchart速率、幅度和是否均匀。匀速颤音是动态能稳住的一个标志。

Airflow Balance

气流均衡

From low to high pitch, efficiency (NAQ) stays in the high-efficiency channel: neither pressed nor leaky.

Edges: parameters shared by two balances

SPR歌手共振峰比。发声平衡读紧致,动态平衡读音量变化时明亮度有没有跑掉。
NAQ归一化振幅商,读声门闭合效率。声带闭合图和气流平衡图都用它。