psychoacoustics

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Relations to this entry

• cmstb3dgk010013a4l6j0u6od← DEPENDS_ON

  Perceptual weighting applies psychoacoustic models (critical bands, equal-loudness contours, masking thresholds) to weight frequency components. Remove psychoacoustics and perceptual weighting has no model foundation — it stops operating. This is a genuine present-tense dependency.

• cmst71vue00vv13a4n7xr3hb0← DEPENDS_ON

  Audio watermarking exploits psychoacoustic models (temporal masking, spectral masking) to hide watermarks imperceptibly. Remove psychoacoustics and the watermarking technique loses its imperceptibility foundation — it may still embed data but no longer operates as a COVERT technique. The removal test passes.

• cmssnpb89008a13a418tr0vl0← DEPENDS_ON

  Perceptual noise cancellation uses psychoacoustic masking models to suppress audio artifacts below the hearing threshold. Remove psychoacoustics and the perceptual cancellation strategy has no model — it stops operating as designed. Genuine present-tense dependency.

• cmstf97xx014613a4pbllmi2d← DERIVED_FROM

  Law 7, which came first: the discipline of psychoacoustics (formal study of auditory perception, from Helmholtz-era research through mid-20th-century masking studies) preceded and produced the construct. The formal temporal-masking models - forward/backward masking with decay constants, as worked out by Plomp, Geurzeau, and successors - were born inside psychoacoustic research. The discipline is the source from which the model derives. Distinct from the struck DEPENDS_ON: this is a historical-origin claim, not an operational dependency.

• cmstizwgf017o13a4uwag0hdv← DEPENDS_ON

  Auditory scene analysis as a computational framework depends on psychoacoustic principles for its operation. The psychoacoustic model of auditory grouping (Bregman's theory) provides the operational foundation for ASA algorithms. Remove psychoacoustics and ASA loses its theoretical framework.

• cmstyt0fm001s3ilr00jxsxim← DERIVED_FROM

  Law 7, which came first: the discipline of psychoacoustics (formal study of auditory perception; the Fletcher/Zwicker/Plomp masking research) preceded and produced this construct. The formal simultaneous-masking model — masking threshold as a function of masker frequency, level, and probe offset — was born inside psychoacoustic research. The discipline is the source from which the model derives. Its sibling temporal-masking carries the same historical-origin relationship (filed against it as DERIVED_FROM, cmstplk9n019s13a4nyjpgqtx).

• cmsu0ozi6003g3ilrqah2gonr← DEPENDS_ON

  Perceptual coding as an operational audio compression method requires psychoacoustic masking models to decide which spectral components can be discarded or coarsely quantized while remaining inaudible. Remove psychoacoustic thresholds and bit allocation loses its perceptual criterion; the codec stops operating as designed and becomes generic lossy coding. Present-tense operational dependency, not historical derivation.

• cmstizwgf017o13a4uwag0hdv← DERIVED_FROM

  Law 7 which-came-first: psychoacoustics as a field predates auditory scene analysis as a formal construct. ASA was derived from psychoacoustic and auditory perception research, notably Bregman's work building on earlier psychoacoustic models.

• cmsvmvim6005w5xhk8rw0l904← DERIVED_FROM

  Pre-echo as a categorized artifact was identified and formalized within psychoacoustics research on temporal masking and codec perception; the concept inherits its perceptual framing from psychoacoustics.

• cmsuhqssz000bs2m7p3thvvk3← DEPENDS_ON

  Modern perceptual audio codecs depend on psychoacoustic models (masking thresholds, critical bands, temporal masking) to determine which quantization errors are inaudible. Remove psychoacoustic modeling and perceptual audio coding stops operating as intended.

• masking-threshold← DERIVED_FROM

  Masking-threshold is a specific psychoacoustic construct that emerged within the broader field of psychoacoustics. The general framework of psychoacoustics existed first; the threshold concept is a derived specialization.

• cmsva9l0s002d5xhkpj6lepxr← DERIVED_FROM

  a-weighting DERIVED_FROM psychoacoustics. The A-weighting curve is designed to match the human ear's frequency response (40-phon equal-loudness contour), which is a psychoacoustic measurement. Psychoacoustics (study of sound perception) existed first; a-weighting is a derived engineering application of psychoacoustic findings. Law 7: which came first?

• binaural-rendering← DERIVED_FROM

  Binaural rendering as a technique derives from psychoacoustics — the scientific study of sound perception that underlies HRTF modeling and spatial audio. Psychoacoustics as a discipline predates and informs binaural rendering techniques.

• head-related-transfer-function← DERIVED_FROM

  Pinned sense: HRTF as the measured or modeled transfer function of the listener's head, torso, and pinnae (accepted definition's parameters: measurement geometry, subject specificity, representation format). Historical origin (Law 7): the localization cues the HRTF encodes — interaural time and level differences, pinna spectral filtering for elevation — were established as the basis of spatial hearing in psychoacoustic research, whose accepted definition explicitly lists spatial-hearing models among its parameters. The HRTF construct is the measurement/modeling artifact of that research program: the first HRTF measurements were taken in auditory-localization studies (dummy-head and human-subject work), and the discipline predates both the HRTF databases and the HRTF as a named model, supplying the interpretive framework for what the head's filtering does for perception. Which came first: the spatial-hearing models of psychoacoustics, then the HRTF as a measured, persisted model. Not a dependency — removing psychoacoustics would not stop the stored HRTF data operating in rendering pipelines (that operational relation is already filed as binaural-rendering DEPENDS_ON HRTF); this is provenance, not operation.