Phase 2 P25 radios utilize which audio codec?

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Multiple Choice

Phase 2 P25 radios utilize which audio codec?

Phase 2 P25 radios compress speech with a vocoder, and the codec used for this phase is AMBE, the Advanced Multi-Band Excitation family. This codec is designed to deliver clear, intelligible voice at low bitrates, which fits the digital channel requirements of Phase 2 and provides robustness in typical radio environments. Phase 1 used a different vocoder (IMBE), but Phase 2 adopts AMBE-based codecs to achieve higher efficiency. The other options aren’t real vocoders used for P25 transmission, so AMBE is the correct choice.

Phase 2 P25 radios compress speech with a vocoder, and the codec used for this phase is AMBE, the Advanced Multi-Band Excitation family. This codec is designed to deliver clear, intelligible voice at low bitrates, which fits the digital channel requirements of Phase 2 and provides robustness in typical radio environments. Phase 1 used a different vocoder (IMBE), but Phase 2 adopts AMBE-based codecs to achieve higher efficiency. The other options aren’t real vocoders used for P25 transmission, so AMBE is the correct choice.

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