This paper describes a novel, low-cost method for combining time-frequency representations into a more sparse one. To this end, a new local quality measure that is based on an amplitude-weighted version of the so-called Hoyer sparsity is proposed. A detailed evaluation procedure that employs a dataset with nearly perfect f0 annotations of melodic signals and a set of white-noise pulses is adopted for assessing the time-frequency resolution attained. The proposed method is shown to produce state-of-the-art results among the existing combination methods in terms of energy concentration at frequency contours, onsets, and offsets, meeting the most desirable requirements: high time-frequency resolution, low computational cost, and the capability of combining representations with non-linear frequency scale.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=21889
(758KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
