FormantScope vs AudioTestLab

FormantScope analyzes your voice in real time on device: it shows fundamental frequency (F0), the first and second formants (F1 and F2), and input level, with short history charts for practice and coaching. • Live numeric readouts for F0, F1, F2, and level • Dual-series charts with independent scales • Stability and gating to reduce flicker during continuous phonation • Optional WAV export to a folder you choose • iPhone, iPad, and Mac; microphone is used only for local analysis • No account required; open-source project (see support link) FormantScope does not send your microphone audio to the developer for processing. Optional recordings are saved only where you select on your device.

AudioTestLab 是一款专业级音频测试工具，集信号发生器、声音分析仪和睡眠监测于一体。信号发生器 6种波形：正弦/方波/三角/锯齿/白噪声/粉红噪声 频率 20Hz~20kHz + 振幅 0~100% 连续可调 实时 FFT 频谱分析 + 频率响应参考 声音分析仪 实时麦克风采集与分析 dB SPL 声压级 + A计权响度（Phon/Sone） Zwicker 模型尖锐度分析（acum） 实时波形图 + 频谱瀑布图 峰值/RMS/Crest Factor 专业指标 睡眠监测 整夜麦克风监听打鼾 智能呼噜检测（低频能量分析） 睡眠质量评分 0-100 每小时趋势图表 + 健康建议 支持 iOS 17.0+ / iPadOS 17.0+ AudioTestLab is a professional-grade audio testing toolkit combining a signal generator, sound analyzer, and sleep monitor. Whether you're an audio engineer tuning equipment, a music lover testing speakers, or monitoring your sleep health, this app has you covered. Signal Generator 6 waveforms: Sine, Square, Triangle, Sawtooth, White Noise, Pink Noise Frequency range 20Hz ~ 20kHz with continuous adjustment Amplitude control 0~100% Real-time FFT spectrum analysis Frequency response & THD reference measurements Sound Analyzer Real-time microphone capture & analysis dB SPL sound pressure level measurement A-weighted loudness calculation (Phon / Sone) Zwicker simplified model sharpness analysis (acum) Real-time waveform & spectrum waterfall display Peak, RMS, Crest Factor professional metrics Loudness level indicator (Quiet → Dangerous) Sleep Monitor All-night microphone snore detection Smart snore identification via low-frequency energy analysis Automatic snore event recording: time, duration, loudness Sleep quality score 0-100 Hourly snore trend charts Personalized health recommendations Full sleep report summary Supports iOS 17.0+ / iPadOS 17.0+