Spektrale Messungen
Verwenden Sie obw und powerbw, um die 90% belegte Bandbreite und die 3 dB Bandbreite eines Signals zu ermitteln. Berechnen Sie die mittlere oder Medianfrequenz eines Leistungsspektrums. Schätzen Sie die Leistung über ein gegebenes Frequenzband. Harmonische Verzerrungen messen. Schätzen Sie die momentane Bandbreite, die momentane Frequenz, die spektrale Entropie und die spektrale Kurtosis.
Funktionen
Themen
- Measure the Power of a Signal
Estimate the width of the frequency band that contains most of the power of a signal. For distorted signals, determine the power stored in the fundamental and the harmonics.
- Measure Total Harmonic Distortion
Measure the total harmonic distortion of a sinusoidal signal.
Enthaltene Beispiele
Analyze Harmonic Distortion
Analyze the harmonic distortion of a weakly nonlinear system in the presence of noise.
Spurious-Free Dynamic Range (SFDR) Measurement
Measure the SFDR of a numerically controlled oscillator and explore the effects of adding phase dither.
Measure Signal Similarities
Compare signals with different sample rates or frequency content, measure delays, and determine if there is a signal in a measurement.
Audio Device Test Stimuli
Exercise a nonlinear system with common audio device stimuli and compare the advantages and disadvantages of the different stimuli.
