16. A method comprising: receiving a first audio signal captured by one or more microphones of a base device, wherein the first audio signal contains first user speech; receiving a second audio signal from a handheld device associated with the base device, wherein the second audio signal is captured by one or more microphones of the second device, and wherein the second audio signal contains second user speech; performing automatic speech recognition (ASR) on the first audio signal using a first ASR model to recognize the first user speech; and performing ASR on the second audio signal using a second ASR model to recognize the second user speech, wherein the second ASR model is different from the first ASR model.
16. A method comprising: receiving a first audio signal captured by one or more microphones of a base device, wherein the first audio signal contains first user speech; receiving a second audio signal from a handheld device associated with the base device, wherein the second audio signal is captured by one or more microphones of the second device, and wherein the second audio signal contains second user speech; performing automatic speech recognition (ASR) on the first audio signal using a first ASR model to recognize the first user speech; and performing ASR on the second audio signal using a second ASR model to recognize the second user speech, wherein the second ASR model is different from the first ASR model. 21. The method of claim 16 , further comprising: generating first responsive speech in response to the first user speech using a first text-to-speech (TTS) model; generating second responsive speech in response to the second user speech using a second text-to-speech (TTS) model; wherein the second TTS model is different from the first TTS model.