Skip to content

Guide by Purpose

Introduce numerous widgets included in MeasureLab, categorized by purpose.

🔍 Quick Search Guide

Checklist to find the best tool for "what you want to do" quickly.

What you want to do Recommended Widget
Output sound / Need a signal source Signal Generator
View frequency components (spectrum) Spectrum Analyzer
View original waveform shape Oscilloscope
Measure distortion (THD) of amps or components Distortion Analyzer
Measure frequency response of amps, etc. Network Analyzer
Measure impedance of speakers Impedance Analyzer
Manage loudness (LUFS) LUFS Meter
Know ambient noise level (SPL) Sound Level Meter
Analyze noise types (1/f, etc.) Noise Profiler

ðŸ“Ą Signal Generation

Tools for outputting signals or generating reference signals.

  • Signal Generator

    • Generates sine waves, noise, sweep signals, etc. It is the basic signal source for measurements.

  • Timecode Monitor & Generator

    • Generates and monitors LTC (Linear Timecode). Used for checking synchronization with video equipment.

📊 Basic Analysis

Measures basic characteristics of audio signals (spectrum, level, frequency).

  • Spectrum Analyzer

    • Real-time display of frequency components (spectrum) using FFT.

  • Sound Level Meter

    • A sound level meter. Measures sound pressure level (SPL) and equivalent continuous sound level (Leq).

  • LUFS Meter

    • Measures loudness units relative to full scale (LUFS). Suitable for level management for broadcasting and distribution.

  • Frequency Counter

    • Counts the frequency of input signals with high precision. Statistical analysis such as Allan deviation is also possible.

  • Spectrogram

    • Visualizes changes in frequency components over time with colors (voiceprint analysis, etc.).

📉 Distortion & Quality

Tools for evaluating equipment performance and sound quality.

  • Distortion Analyzer

    • Measures THD (Total Harmonic Distortion) or THD+N. Use this for basic distortion measurements.

  • Linearity Analyzer

    • Measures input/output level linearity. Used for verifying the low-level signal reproduction capability and dynamic range of DACs.

  • Advanced Distortion Meter

    • Performs more advanced distortion analysis, such as multitone measurement and IMD (Intermodulation Distortion).

  • Lock-in THD+N Analyzer

    • An extremely low-noise distortion measurement module using the principle of a lock-in amplifier.

  • Sound Quality Analyzer

    • Calculates psychoacoustic "sound quality" metrics such as sharpness and roughness.

  • Noise Profiler

    • Analyzes noise floor characteristics (1/f noise, white noise, etc.).

🔌 Circuit & Network

Measures transmission characteristics, impedance, etc., of electronic circuits and systems.

  • Network Analyzer

    • Measures frequency response (gain, phase, group delay). Useful for checking characterisics of amplifiers and filters.

  • Impedance Analyzer

    • Measures impedance characteristics (LCR) of speakers and components.

  • Lock-in Amplifier

    • Detects infinitesimal signals buried in noise. Can also be used as an FRA (Frequency Response Analyzer).

  • Lock-in Frequency Counter

    • Tracks minute frequency deviations or phase fluctuations relative to a reference signal.

  • Loopback Finder

    • Detects loopback paths of audio interfaces.

📈 Time Domain

Observes waveform shapes and transient changes on the time axis.

  • Oscilloscope

    • A general-purpose oscilloscope. Observes the waveform itself.

  • Raw Time Series

    • A tool like a chart recorder that records waveforms over a long period and allows you to check them by scrolling.

  • Transient Analyzer

    • Triggers and analyzes transient phenomena such as impulse responses. Wavelet transform display is also possible.

  • Boxcar Averager

    • Averages repetitive signals to remove noise and extract minute waveforms.

🎧 Spatial & Acoustics

Handles stereo image and spatial sound reverberation.

  • Goniometer

    • Displays phase relationship (spread) of stereo signals using Lissajous figures, etc.

  • BNIM Meter

    • Binaural Neural Image Map. Visualizes sound source localization (ITD/ILD) based on auditory models.

  • HRTF Player

    • Loads Head-Related Transfer Functions (HRTF/SOFA) and simulates 3D audio playback via convolution.

🛠ïļ Utilities

Other useful functions.

  • Recorder & Player
    • Simple recording and playback function.
  • Inverse Filter
    • Creates an inverse filter to cancel out the characteristics of speakers and rooms.
  • Detachable Wrapper
    • A framework for detaching any widget into a separate window.
  • Settings
    • Configure audio device settings, language settings, theme changes, etc.
  • Welcome
    • The startup screen.