G - Physics – 10 – H
Patent
G - Physics
10
H
84/1.5
G10H 1/06 (2006.01) G10H 1/057 (2006.01)
Patent
CA 2038384
ABSTRACT OF THE DISCLOSURE Apparatus for converting an input note signal of the type having a rapid rise and a slow exponential decay into an output note signal which, from the shape of its envelope, appears to be a time reversed version of the input note signal includes means for forming a normalized envelope signal, En, and means for modifying the instantaneous gain applied to the note signal as a function of the instantaneous amplitude of En. Ideally, the function is proportional to the inverse of the square of the instantaneous amplitude of the normalized envelope signal, En. The note signal gain modification means in accordance with a first embodiment includes an analog-to-digital converter fed by En which addresses a ROM lookup table containing data words corresponding to gain amplitudes. In a second embodiment of the note signal gain modification means, the dynamic range of En is divided into regions and current sources are selected for charging a capacitor depending on in which region the instantaneous amplitude of En lies, to select in each region a slope versus time of the gain amplitude.
Borden Ladner Gervais Llp
Schwartz Louis A.
LandOfFree
Music signal time reverse effect apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Music signal time reverse effect apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Music signal time reverse effect apparatus will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1622344