Audio signal dynamic equalization processing control

摘要

Apparatuses for and methods of carrying out dynamic equalization processing of an audio signal, and apparatuses for and methods of controlling such equalization processing of the audio signal to dynamically adjust the time-varying spectrum of an audio signal to more closely match a user specified target time-invariant perceived audio signal spectrum while preserving the original dynamic range of the audio signal. The dynamic equalization is according to a user-defined spectral profile specified by a control interface that allows a user to define, create, modify and/or apply the user-defined spectral profile.

主权项

1. A method of operating an audio signal processing apparatus to process an audio signal, the method comprising:
presenting a control interface to the user, the control interface including one or more control elements configured to accept a user input including user input that defines respective one or more values for at least some of a set of one or more blending parameters, the set of one or more blending parameters determining a user-defined dynamic equalization (DEQ) spectral profile based on a blending of two or more selected DEQ preset spectral profiles; determining from or accepting from the output of the control interface the user-defined dynamic equalization (DEQ) spectral profile based on a blending of two or more selected DEQ preset spectral profiles, the blending based on the set of one or more blending parameters, wherein each DEQ spectral profile comprises a set of measures for each band of a perceptually spaced set of frequency bands; and processing an audio signal according to the user-defined DEQ spectral profile to generate a processed audio signal, the processing including determining a spectral measure that is modified to dynamically adjust the time-varying spectrum of the audio signal to more closely match a time invariant spectral profile according to the user-defined DEQ spectral profile,wherein determining the time-varying spectrum comprises determining the specific loudness for the perceptually spaced set of frequency bands;wherein the processing includes perceptual domain dynamic equalization (PDEQ) to dynamically adjust the time-varying spectrum of the audio signal to more closely match the time invariant spectral profile according to the user-defined DEQ spectral profile,and wherein the blending is of a plurality of stored DEQ preset spectral profiles in the perceptually spaced set of frequency bands.