Unlock instant, AI-driven research and patent intelligence for your innovation.

Decomposition of music signals using basis functions with time-evolution information

A basis function, audio signal technology, used in speech analysis, instrumentation, etc.

Active Publication Date: 2013-07-03
QUALCOMM INC
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These constraints can limit the ability to control interference and / or record spatial effects in the case of music production, and can lead to a restricted user experience in the case of video games

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Decomposition of music signals using basis functions with time-evolution information
  • Decomposition of music signals using basis functions with time-evolution information
  • Decomposition of music signals using basis functions with time-evolution information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Decomposing an audio signal using a basis function inventory and sparse restoration techniques is disclosed, wherein the basis function inventory contains information about spectral changes of notes during indecision of pitch. Such decomposition can be used to support analysis, encoding, rendering and / or synthesis of signals. An example of quantitative analysis of an audio signal containing a mixture of sounds from harmonic (ie, non-percussion) and percussion instruments is presented herein.

[0045]Unless expressly limited by its context, the term "signal" is used herein to indicate any of its ordinary meanings, including the state of a memory location (or collection of memory locations) expressed on a wire, bus, or other transmission medium. Unless expressly limited by its context, the term "generate" is used herein to indicate any of its ordinary meanings, such as computational or otherwise. Unless expressly limited by its context, the term "calculate" is used herei...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Decomposition of a multi-source signal using a basis function inventory and a sparse recovery technique is disclosed.

Description

[0001] Claims of Priority Pursuant to 35 U.S.C. §119 [0002] The title of the patent application filed on October 25, 2010 is "CASA (Computational Auditory Scene Analysis) for Music Applications: Decomposing Music Signals Using Basis Function Inventory and Sparse Restoration (CASA (COMPUTATIONAL AUDITORY SCENE ANALYSIS) FOR MUSIC APPLICATIONS: DECOMPOSITION OF MUSIC SIGNALS USING BASIS FUNCTION INVENTORY AND SPARSE RECOVERY), which is assigned to the present assignee. technical field [0003] The present invention relates to audio signal processing. Background technique [0004] Many music applications on portable devices (eg, smartphones, netbooks, laptops, tablets) or electronic game consoles are available to a single user. In these cases, the user of the device hums a melody, sings a song, or plays an instrument while the device records the resulting audio signal. The recorded signal can then be analyzed for its pitch / pitch curve by the application, and the user can c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G10L21/0272G10L25/48
CPCG10L19/008G10L21/0272G10L25/48G10L19/00
Inventor 埃里克·维瑟郭尹义朱默飞刘尚忆金莱轩辛钟元
Owner QUALCOMM INC