Systems and methods for estimating pitch in audio signals based on symmetry characteristics independent of harmonic amplitudes
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 19, 2016
Grant Date -
N/A
app pub date -
Sep 30, 2014
filing date -
Sep 30, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Pitch in audio signals may be estimated based on symmetry characteristics independent of harmonic amplitudes. A magnitude spectrum of an audio signal may be provided. The magnitude spectrum may be partitioned by dividing a frequency axis into equal-sized cells. Individual cells may be centered on corresponding harmonic frequencies of a hypothesized pitch. The magnitude spectrum contained in individual cells may be normalized to have equal mean magnitudes and equal standard deviations. A likelihood that the hypothesized pitch is an actual pitch of the audio signal may be determined based on symmetries of magnitude spectra contained in individual cells.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully