Nonlinear Distortion
Nonlinear Distortion
Harmonic Distortion
- Total harmonic distortion (THD, THD+N)
Nth-order component versus frequency and amplitude
Hi-2 distortion (weighted low order harmonics)
Equivalent input distortion
Intermodulation Distortion
- Nth-order difference-tone and summed-tone intermodulation
Total intermodulation distortion (absolute and relative)
Amplitude modulation distortion
Multi-tone Distortion
- Relative multi-tone distortion
Distortion-noise-ratio
Separated Loudspeaker Distortion
- Total distortion in a reproduced audio signal
Distortion generated by force factor Bl(x)
Distortion generated by stiffness Kmx(x)
Distortion generated by inductance Le(x)
Distortion generated by inductance Le(i)
Compression of Fundamental Components
- Output amplitude versus input amplitude
Thermal power compression
Nonlinear amplitude compression
DC Displacement – Dynamic Offset the Voice Coil
- DC displacement versus frequency
DC displacement versus amplitude
Asymmetrical probability function pdf
Peak-bottom value
Rub & Buzz and Impulsive Distortion
- Peak value of higher-order harmonics
Rms value of higher-order harmonics
Crest-factor of higher-order harmonics
Crest-factor versus voice coil displacement
Peak value of deterministic component
Peak value of random component
Isolated defect distortion
Noise immunity
Air Leakage Noise
- Absolute envelope of modulated noise MOD
Relative envelope of modulated noise RMOD
Peak value of random distortion RAND
Peak value of deterministic distortion DET
Crest factor of deterministic distortion CREST
Inter-channel delay time
Incident angle
Mechanical loss factor Qms
Port resonance frequency fp
Quality factor representing box leakage
Auralization
- Distortion generated by force factor Bl(x)
Distortion generated by stiffness Kmx(x)
Distortion generated by inductance Le(x)
Distortion generated by inductance Le(i)
Voice coil displacement
Voice coil temperature
Voltage, current and input power
Maximum SPL
- Tone burst measurement according to ANSI CEA-2010