System and method for addressing discontinuous transmission in a network device
View Patent ↗Embodiments included herein are directed towards a system and method for addressing discontinuous transmission (DTX) in a network device. Embodiments may include receiving, at a computing device, an audio signal and generating at least one silence descriptor (SID) frame associated with the audio signal. Embodiments may also include generating at least one no data frame associated with the audio signal. Embodiments may also include initiating a speech decoder, voice enhancement, and speech encoder operation for the at least one SID frame during a DTX operation and bypassing the speech decoder, voice enhancement, and speech encoder functions for the at least one no data frame.
1. A computer-implemented method for addressing discontinuous transmission (DTX) in a network device comprising:
receiving, at a computing device, an audio signal;
generating at least one silence descriptor (SID) frame associated with the audio signal;
generating at least one no data frame associated with the audio signal;
initiating a speech decoder, voice enhancement, and speech encoder operation for the at least one SID frame during a DTX operation; and
bypassing the speech decoder, voice enhancement, and speech encoder functions for the at least one no data frame.
2. The method of claim 1 , further comprising:
relaying a plurality of bits from a decoder associated with the network device to an adaptive encoder.
3. The method of claim 2 , further comprising:
relaying a receiver (RX) frame type from the decoder to a transmission (TX) frame type in the adaptive encoder.
4. The method of claim 1 , further comprising:
calculating a logarithmic frame energy based upon, at least in part, a current SID frame;
updating a history memory buffer associated with the logarithmic frame energy using the current SID frame; and
calculating an averaged logarithmic frame energy using the updated history memory buffer.
5. The method of claim 1 , further comprising:
defining a decoder voice activity detection (VAD) flag based upon, at least in part, a codec mode rate; and
saving the VAD flag in an adaptive encoder memory.
6. The method of claim 1 , further comprising:
calculating a decoder excitation for the at least one SID frame based upon, at least in part, a fixed codebook input without including an adaptive codebook input.
7. The method of claim 1 , further comprising:
saving original encoded LP coefficients and LSP parameters in an adaptive encoder memory associated with the network device.
8. The method of claim 2 , further comprising:
copying the at least one SID frame from an RTP packet in the decoder to the output of the adaptive encoder.
9. The method of claim 8 , further comprising:
saving an adaptive encoder excitation to an encoder excitation to achieve excitation synchronization; and
generating a new SID frame using one or more LPC parameters available in an adaptive encoder memory.
10. The method of claim 1 ,
wherein bypassing includes completely ignoring the at least one no data frame.
11. A system for addressing discontinuous transmission (DTX) in a network device, the system including at least one processor configured to perform operations comprising:
receiving, at a computing device, an audio signal;
generating at least one silence descriptor (SID) frame associated with the audio signal;
generating at least one no data frame associated with the audio signal;
initiating a speech decoder, voice enhancement, and speech encoder operation for the at least one SID frame during a DTX operation; and
bypassing the speech decoder, voice enhancement, and speech encoder functions for the at least one no data frame.
12. The system of claim 11 , further comprising:
relaying a plurality of bits from a decoder associated with the network device to an adaptive encoder.
13. The system of claim 12 , further comprising:
relaying a receiver (RX) frame type from the decoder to a transmission (TX) frame type in the adaptive encoder.
14. The system of claim 11 , further comprising:
calculating a logarithmic frame energy based upon, at least in part, a current SID frame;
updating a history memory buffer associated with the logarithmic frame energy using the current SID frame; and
calculating an averaged logarithmic frame energy using the updated history memory buffer.
15. The system of claim 11 , further comprising:
defining a decoder voice activity detection (VAD) flag based upon, at least in part, a codec mode rate; and
saving the VAD flag in an adaptive encoder memory.
16. The system of claim 11 , further comprising:
calculating a decoder excitation for the at least one SID frame based upon, at least in part, a fixed codebook input without including an adaptive codebook input.
17. The system of claim 11 , further comprising:
saving original encoded LP coefficients and LSP parameters in an adaptive encoder memory associated with the network device.
18. The system of claim 12 , further comprising:
copying the at least one SID frame from an RTP packet in the decoder to the output of the adaptive encoder.
19. The system of claim 18 , further comprising:
saving an adaptive encoder excitation to an encoder excitation to achieve excitation synchronization; and
generating a new SID frame using one or more LPC parameters available in an adaptive encoder memory.
20. The system of claim 11 ,
wherein bypassing includes completely ignoring the at least one no data frame.