Method and apparatus for mixing analog audio and digital audio for HD radio receiver

摘要

Process the compressed audio packet to calculate the corresponding digital audio quality indicator value, store the compressed audio packet in the audio mixing buffer, and use the audio decoder to store the audio information from each compressed audio packet stored in the audio mixing buffer Processed and decompressed digital audio signal samples are generated and the digital audio quality indicator value is used to determine whether the digital audio quality indicator value is between analog and digital if the compressed audio packet indicates degradation or failure. Composite digital radio broadcast by guiding the mixing process to combine analog audio signal samples with digital audio signal samples to produce audio output by preventing the necessary mixing repetition To provide a method and apparatus for mixing the analog and digital portions of the item. [Selection] Figure 12