Skip to content

Measurement Recipes

Banner

Measurement recipes are a collection of guides that systematically explain "which widgets to use and how to combine them for specific purposes (e.g., analyzing noise, evaluating equipment performance)."

Please use them as practical procedures to maximize the diverse measurement tools included in MeasureLab and use them for actual audio engineering, hobbyist development, and maintenance.

How to Use Measurement Recipes

The most important thing in measurement is not just reading numbers, but "measuring with the correct method and interpreting the results correctly." Each recipe explains according to the following steps:

  • Purpose and Tool Selection: Confirm which widget is best for what you want to evaluate.
  • Setup (Preparation): Summarize the connection method with the device under test (DUT) and notes on environment settings.
  • Measurement Procedure: Explain the specific operation flow and recommended setting values.
  • Interpretation of Results: Explain what characteristics of the hardware can be read from the obtained graphs and numbers.

🧪 Available Recipes

The following guides are currently available:

  • Noise Measurement Recipe
    • Detailed analysis of residual noise (hiss) and hum noise from amplifiers and circuits. We explain techniques for identifying and evaluating causes for each component, such as 1/f noise, thermal noise, and external induction noise.
  • High-Precision Gain/Phase Measurement (Lock-in Amplifier)
    • Explains how to measure gain and phase with higher precision than FFT. Introduces precision demonstration at the 0.001 dB level through loopback tests and ultra-precise frequency response measurement using FRA mode.
  • Distortion (THD+N) Measurement
    • Explains basic procedures for measuring distortion in audio equipment. Also touches on measurement limits using the digital notch filter method and choosing between it and the lock-in THD analyzer.
  • Speaker Impedance Measurement
    • Explains how to measure the f0f_0 (lowest resonant frequency) and impedance characteristics of a speaker unit. Introduces the connection diagram using the I-V method and how to read the measurement results step by step.

📅 Future Expansion

Measurement recipes are scheduled to be added and updated sequentially according to user needs and the expansion of widget functions.

References

  • The precision of the measurement values obtained in each recipe depends heavily on the performance of the audio interface used and the calibration status.
  • For the reliability of measurements and the limitations of this tool, please be sure to read Appendix: This tool is not a "measurement instrument".