Abstract
A system and method are disclosed for providing improved adaptive multi-rate wideband (AMR-WB) discontinuous transmission (DTX) synchronization. According to various embodiments, within a predetermined number of frames before the start of the DTX interval, i.e. before the SID_FIRST frame is received, an indication of the start of the inactive speech interval may be voice activity detection (VAD). Signaled to the decoder via the flag. When the VAD flag indicates an active voice or when the VAD flag is set to zero smaller than a previous predetermined number of frames, the received NO_DATA frame may be classified as having high degree of reliability as the active voice. Ie it can be regarded as a transmitter, network or end-initiated signaling and so can be replaced by a SPEECH_LOST frame. If the VAD flag is set to zero before eight frames or faster, the NO_DATA frame is classified as DTX.
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| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 5G,4G,3G,2G | 18/04/2011 | ISLD-201103-007 | NOKIA CORP | Yes | Family Member | ||||
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| 5G,4G,3G,2G | 14/09/2018 | ISLD-201809-321 | NOKIA CORP | No | Family Member | ||||
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