You are here: Home / Know-how / Measurements / Nonlinear Distortion

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