NZ746512A - Method and apparatus for controlling audio frame loss concealment - Google Patents

Method and apparatus for controlling audio frame loss concealment

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Publication number
NZ746512A
NZ746512A NZ746512A NZ74651214A NZ746512A NZ 746512 A NZ746512 A NZ 746512A NZ 746512 A NZ746512 A NZ 746512A NZ 74651214 A NZ74651214 A NZ 74651214A NZ 746512 A NZ746512 A NZ 746512A
Authority
NZ
New Zealand
Prior art keywords
frame
concealment method
prototype
conditions
applying
Prior art date
Application number
NZ746512A
Inventor
Jonas Svedberg
Stefan Bruhn
Original Assignee
Ericsson Telefon Ab L M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority claimed from NZ739387A external-priority patent/NZ739387A/en
Publication of NZ746512A publication Critical patent/NZ746512A/en

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Abstract

In accordance with an example embodiment of the present invention, disclosed is a method and an apparatus thereof for controlling a concealment method for a lost audio frame of a received audio signal wherein a segment from a previously received or reconstructed audio signal is used as a prototype frame in order to create a substitution frame for a lost audio frame. The method comprises transforming the prototype frame into a frequency domain; analyzing a previously reconstructed signal frame and frame loss statistics to detect predetermined conditions, wherein said conditions comprise detected transient and burst losses with several consecutive frame losses; if said conditions are not detected, applying the first concealment method, wherein the first concealment method comprises: applying a sinusoidal model to the prototype frame to identify a frequency of a sinusoidal component of the audio signal, calculating a phase shift θk for the sinusoidal component and phase shifting the sinusoidal component by θk; if said conditions are detected, applying a second concealment method, wherein the second concealment method comprises: adapting the first concealment method by selectively adjusting a magnitude of the prototype frame spectrum; and creating the substitution frame by performing an inverse frequency transform of a frequency spectrum of the prototype frame.
NZ746512A 2013-02-05 2014-01-22 Method and apparatus for controlling audio frame loss concealment NZ746512A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201361760822P 2013-02-05 2013-02-05
US201361760814P 2013-02-05 2013-02-05
US201361761051P 2013-02-05 2013-02-05
NZ739387A NZ739387A (en) 2013-02-05 2014-01-22 Method and apparatus for controlling audio frame loss concealment

Publications (1)

Publication Number Publication Date
NZ746512A true NZ746512A (en) 2020-02-28

Family

ID=69627751

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ746512A NZ746512A (en) 2013-02-05 2014-01-22 Method and apparatus for controlling audio frame loss concealment

Country Status (1)

Country Link
NZ (1) NZ746512A (en)

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