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Method and test signal for measuring speech intelligibility

A technology for testing signal and voice, applied in voice analysis, telephone communication, transmission monitoring and other directions, can solve the problem of time-consuming, a large number of test signals, etc.

Inactive Publication Date: 2008-09-17
TELEFON AB LM ERICSSON (PUBL)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Although the introduction of STI methods represented a significant advance in the objective measurement of speech intelligibility, these methods are still quite time-consuming due to the large number of test signals required, and they are also specialized for simpler settings such as restricted listening spaces or isolated communication channel measurements

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  • Method and test signal for measuring speech intelligibility
  • Method and test signal for measuring speech intelligibility
  • Method and test signal for measuring speech intelligibility

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Embodiment Construction

[0044] Throughout the drawings, the same reference numerals will be used for corresponding or similar elements.

[0045] The invention will now be described with reference to exemplary embodiments in an exemplary mobile network application, but it should be understood that the invention is not limited to these examples.

[0046] As previously stated, the present invention generally relates to the measurement of speech intelligibility in components of a mobile communication network dealing with two-way communication between two ends, typically a near end and a far end.

[0047] refer to figure 1 The flow chart of the speech intelligibility measurement is based on simulating (S1) a two-way speech communication via the considered network components by using appropriate test signals suitable for the speech intelligibility measurement. It is then proposed, by using a double-talk detector, to detect (S2) double-talk during analog speech communication and to perform (S3) speech inte...

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Abstract

The invention generally relates to measurement of speech intelligibility in a mobile communication network component handling two-way communication between two ends, typically a near-end and a far-end. A basic idea is to simulate (Sl) two-way speech communication based on test signals adapted for speech intelligibility measurements, detect double-talk (S2) during the simulated speech communication by using a double-talk detector, and perform (S3) speech intelligibility measurements only at periods of double-talk. In this way, it is for example possible to take the effects of echo into account in the speech intelligibility measurements, while avoiding undesirable effects from non-linear processing (and possible added comfort noise) in the signal path for which speech intelligibility is measured.; Optionally, the operation of voice enhancement devices can be adjusted (S4) in response to the estimated speech intelligibility.

Description

technical field [0001] The present invention relates generally to objective measurement of speech intelligibility in mobile communication networks, and more particularly to novel methods for measuring and / or improving speech intelligibility in such networks. Background technique [0002] Speech intelligibility, referred to simply as speech intelligibility, generally relates to the degree of speech comprehension and is a measure of the effectiveness of speech communication. People who speak quickly or slur their speech may be difficult to understand. However, even a message spoken fluently in the listener's native language may be misinterpreted by the listener if the message is not fully audible, and / or if the message has been distorted en route to the listener. On the other hand, for example, synthesized speech may be well understood by a listener, but is perceived as harsh, abnormal and generally of low quality, meaning that a message of poor quality may still be intelligi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/23H04B17/00G10L21/02G10L19/00G10L21/0208G10L25/69
CPCH04B17/0087H04B17/009G10L2021/02082H04B17/0085H04M3/2236H04B3/234G10L25/69H04B17/391
Inventor J·程
Owner TELEFON AB LM ERICSSON (PUBL)
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