Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and apparatus for audio signal classification

A technology for audio signal and signal recognition, applied in speech analysis, speech recognition, instruments, etc., can solve problems such as not suitable for communication equipment

Inactive Publication Date: 2012-06-13
NOKIA TECHNOLOGLES OY
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a processing-intensive approach is not suitable for communication devices, especially portable devices where processing power comes at the expense of power consumption and cost

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
  • Method and apparatus for audio signal classification
  • Method and apparatus for audio signal classification
  • Method and apparatus for audio signal classification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Suitable means and possible mechanisms for providing identification or classification of received downlink audio signals as containing speech or music are described in more detail below. In this regard, first refer to figure 1 , which shows a schematic block diagram of an exemplary apparatus or electronic device 10 that identifies maximum and minimum Root Mean Square (RMS) values ​​over several frames from a low-pass filtered signal. In such devices, in order to improve the robustness in terms of noise, a background noise estimator is implemented for detecting situations where the noise makes recognition impossible. A device thus described may have three main advantages. First, the device can be targeted to prioritize voice to produce low false positive music detections. Second, the device can be operated to take noise levels into account. Third, due to the relative simplicity and low complexity of the scheme and the means required to implement it, the means can be i...

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

An apparatus comprising at least one processor and at least one memory including computer program code the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform determining a signal identification value for an audio signal, determining at least one noise level value for the audio signal, comparing the signal identification value against a signal identification threshold and each of the at least one noise level value against an associated noise level threshold, and identifying the audio signal dependent on the comparison.

Description

technical field [0001] The invention relates to a device for classifying audio signals. The invention further relates to, but is not limited to, an arrangement for a mobile device. Background technique [0002] In many applications, there is a strong interest in identifying and classifying audio signals. One such classification is automatic recognition when an audio signal is a speech audio signal, a music audio signal, or silence. Although the human ear can easily differentiate between speech and music audio signals, for example by listening to a short segment for a few seconds, automatic identification or differentiation has been found to be a technically difficult problem. [0003] Such identification of whether an audio signal is music or speech is particularly beneficial in wireless communication system devices. Audio signal processing within a device in a wireless communication system may implement different encoding and decoding algorithms on a signal depending on ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G10L11/02G10L25/78
CPCG10L25/78H04R29/00G10L15/20G10H2240/251G10H2210/046
Inventor J·V·T·劳哈拉
Owner NOKIA TECHNOLOGLES OY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com