Question: What is the outcome when an Adaptive Multi-Rate (AMR) speech encoder, already in its home state, processes an encoder homing frame aligned with its internal speech frame segmentation?
Option 1: The encoder skips producing a speech parameter frame for that input.
Option 2: The resulting speech parameter frame is identical to the decoder homing frame corresponding to the used codec mode.
Option 3: The encoder's VAD (Voice Activity Detection) and SCR (Source-Controlled Rate) functions are bypassed.
Option 4: The encoder immediately resets all state variables without producing an output for that frame.
Explanation: According to the encoder homing process, if the AMR speech encoder is in its home state when it receives an aligned encoder homing frame, the output speech parameter frame will match the decoder homing frame specific to the codec mode being used. This ensures synchronization and predictable behavior between the encoder and decoder, highlighting the importance of homing frames in maintaining consistent states across the communication link.