AudioTestLab vs Live Spectrum Analyzer

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+

Live Spectrum Analyzer is a real-time audio visualization tool for musicians, students, teachers, sound makers, and anyone who wants to see sound clearly. Use the microphone for live input, or import an audio file from Files to inspect how frequency, amplitude, pitch, and dynamics change over time. Switch between waveform, FFT, sonogram, spectrum bars, VU meter, pitch, octave bands, peak hold, envelope, waterfall, phase, Lissajous, and XY Scope views. Each mode is designed for quick visual reading while you listen, tune, practice, demonstrate acoustics, compare sounds, or check a recording. The app also provides practical analysis readouts, including RMS, peak level, decibels, detected pitch, strongest frequency peaks, spectral centroid, zero crossing rate, dynamic range, estimated BPM, beat strength, mel bands, chroma, noise floor, and clipping status. Results are intended as helpful visual references rather than certified measurement data. Key features: • Live microphone waveform and spectrum visualization • Import audio files for playback and local visual analysis • Waveform, FFT, sonogram, bars, VU, pitch, waterfall, phase, and scope modes • Adjustable gain, time window, FFT floor, sonogram brightness, contrast, and speed • Pitch reference, tolerance, microphone gain, and noise gate settings • Record audio locally, review saved recordings, and share or delete files • Capture visualization snapshots as PNG images • Local-first workflow with no account required Subscription and purchase information: The app offers a free experience and optional Pro access. Actual prices, trials, promotions, and availability are shown in the App Store. Privacy and data information: Your microphone input, imported audio, recordings, snapshots, and analysis results stay on your device by default. The app does not require an account and does not upload your media to a server operated by us. Privacy Policy: https://sites.google.com/view/livespectrumanalyzer/home/privacypolicy Terms of Use: https://sites.google.com/view/livespectrumanalyzer/home/term_of_use Contact: gongchengyong70@gmail.com