Determining a harmonicity measure for voice processing

Patent metadata

Field	Value
Publication number	US-9520144-B2
Application number	US-201314384842-A
Country	US
Kind code	B2
Filing date	Mar 21, 2013
Priority date	Mar 23, 2012
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A method, an apparatus, and a computer-readable medium configured with instructions that when executed carry out the method for determining a measure of harmonicity. In one embodiment the method includes selecting candidate fundamental frequencies within a range, and for candidate determining a mask or retrieving a pre-calculated mask that has positive value for each frequency that contributed to harmonicity, and negative value for each frequency that contributes to inharmonicity. A candidate harmonicity measure is calculated for each candidate fundamental by summing the product of the mask and the magnitude measure spectrum. The harmonicity measure is selected as the maximum of the candidate harmonicity measures.

First claim

What is claimed is:

1. A method of operating a processing apparatus to determine a measure of harmonicity of an audio signal, the method comprising:
accepting an audio input signal, the accepting providing digitized samples of the audio input signal, including in the case the audio input signal is an analog signal, using a digitizer on the analog input signal;
determining a spectrum of an amplitude measure for a set of frequencies, including time-to-frequency transforming the ac…

Assignees

• Dolby Laboratories Licensing Corp

Inventors

• Gunawan David
• Dickins Glenn N

Classifications

• G10L2025/937

  Physics · mapped topic

• G10L25/84 Primary

  Physics · mapped topic