EERecordist
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Steve Temme https://www.listeninc.com/about-listen/steve-temme/ to present a tutorial on the audibility of distortion to the AES May 28, 2026.
aeseurope2026.sched.com
Psychoacoustics of Distortion
Separating Non-linear from Linear Distortion
Distortion Measurements
AES Europe 2026: Distortion Measurements; Can We Measure...
View more about this event at AES Europe 2026
aeseurope2026.sched.com
Psychoacoustics of Distortion
- Distortion Order: Refers to which harmonics (2nd, 3rd, etc.) are present. Lower-order harmonics (like the 2nd) are often perceived as "warm," while higher-order ones can sound harsh.
- Auditory Masking: A phenomenon where one sound is obscured by another. In distortion, the primary signal can sometimes mask the distortion products, making them less audible.
Separating Non-linear from Linear Distortion
- Sensitivity vs. Frequency: Explores how the ear's changing sensitivity across the frequency spectrum affects perceived Total Harmonic Distortion (THD).
- THD vs. Frequency Normalized THD: Compares standard THD measurements against versions adjusted (normalized) to reflect how the human ear actually perceives those frequencies.
Distortion Measurements
- Harmonic: Measuring integer multiples of the fundamental frequency.
- Non-Coherent: Distortion or noise that does not have a fixed phase relationship with the source signal.
- Non-Stationary: Measurements used for devices with changing characteristics, such as Active Noise Cancelling (ANC) headphones, where the processing adapts in real-time.
