Signal processing
OwnerRobert Patrick Beyerinventor
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Abstract
Signal processing apparatus produces an audio signal suitable for conveying a psychoacoustic perception of a low frequency audio signal to a listener, the apparatus generates harmonics of the low frequency signal by shaping the waveform of the low frequency signal with respect to time and/or level. This may be achieved using a peak-hold generator and a rectifier, or using a peak-hold-decay generator.
Claims8
Signal processing apparatus for producing an audio signal suitable for conveying a psychoacoustic perception of a low frequency audio signal to a listener, the apparatus including a peak-hold generator to generate harmonics of the low frequency signal by shaping the waveform of the low frequency signal with respect to time by tracking the low frequency signal to a substantially peak magnitude until a zero crossing, then tracking the signal again in the opposite polarity.
Signal processing apparatus for producing an audio signal suitable for conveying a psychoacoustic perception of a low frequency audio signal to a listener, the apparatus including a peak-hold generator means to generate harmonics of the low frequency signal by shaping the waveform of the low frequency signal with respect to time and a rectifier to generate even harmonics.
A method of processing a low frequency audio signal to produce an output audio signal suitable for conveying a psychoacoustic perception of a low frequency audio signal to a listener, the method including shaping the waveform of the low frequency signal with respect to time by tracking the low frequency signal to a substantially peak magnitude until a zero crossing then tracking the signal again in the opposite polarity.
Dependencies are inferred from the claim text.