Enhanced audio frame loss concealment
US-2015371641-A1 · Dec 24, 2015 · US
Evaluation of the voice quality of a coded speech signal
US9355643B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9355643-B2 |
| Application number | US-201214111471-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 4, 2012 |
| Priority date | Apr 11, 2011 |
| Publication date | May 31, 2016 |
| Grant date | May 31, 2016 |
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Abstract
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A method is provided for determining an indicator evaluating the voice quality of a coded speech signal. The method includes the following steps: calculation per signal frame, of a predetermined number of coefficients of a linear prediction filter for the coded speech signal; determination per frame, of a speech signal reconstructed on the basis of the filter coefficients thus calculated; obtaining per sample, of the residual between the coded speech signal and the reconstructed speech signal; calculation of an evaluation indicator on the basis of the mean or the absolute value of the residuals obtained for all the samples. Also provided are a device for determining an indicator implementing the above method, a method of evaluating the quality or of identifying the class of coding of the coded signal using the indicator determined, as well as a measurement terminal implementing these methods.
First claim
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The invention claimed is: 1. A method comprising acts of: receiving, by a device, a coded speech signal from a communications network in which the coded speech signal was sent from a transmitter to a receiver, interconnected by the communications network, the coded speech signal comprising a plurality of frames, and the device being connected to the communications network; for each frame of the received coded speech signal, the device performing acts of: calculating with a proc…
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- What does patent US9355643B2 cover?
- A method is provided for determining an indicator evaluating the voice quality of a coded speech signal. The method includes the following steps: calculation per signal frame, of a predetermined number of coefficients of a linear prediction filter for the coded speech signal; determination per frame, of a speech signal reconstructed on the basis of the filter coefficients thus calculated; obtai…
- Who is the assignee on this patent?
- Plapous Cyril, Faure Julien, Orange
- What technology area does this patent fall under?
- Primary CPC classification G10L25/69. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue May 31 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).