2. The method of claim 1 , comprising: receiving, by the one or more processors of the computing device, additional audio data that corresponds to an additional utterance; determining that the additional utterance likely includes the particular, predefined hotword; in response to determining that the additional utterance likely includes the particular, predefined hotword, determining a second score that reflects a second loudness of the additional audio data; determining a second duration of a second delay period, wherein the second duration of the second delay period is inversely proportional to the second loudness of the additional audio data; activating the mode in which the computing device temporarily listens, for the second duration of the second delay period, for the predetermined audio signal that indicates that the other computing device is commencing speech recognition processing on the additional audio data; before the second duration of a second delay period has elapsed, receiving the predetermined audio signal that indicates that the other computing device is commencing speech recognition processing on the additional audio data; and in response to receiving the predetermined audio signal; deactivating processing of the additional audio data.
2. The method of claim 1 , comprising: receiving, by the one or more processors of the computing device, additional audio data that corresponds to an additional utterance; determining that the additional utterance likely includes the particular, predefined hotword; in response to determining that the additional utterance likely includes the particular, predefined hotword, determining a second score that reflects a second loudness of the additional audio data; determining a second duration of a second delay period, wherein the second duration of the second delay period is inversely proportional to the second loudness of the additional audio data; activating the mode in which the computing device temporarily listens, for the second duration of the second delay period, for the predetermined audio signal that indicates that the other computing device is commencing speech recognition processing on the additional audio data; before the second duration of a second delay period has elapsed, receiving the predetermined audio signal that indicates that the other computing device is commencing speech recognition processing on the additional audio data; and in response to receiving the predetermined audio signal; deactivating processing of the additional audio data. 3. The method of claim 2 , comprising: based on receiving the predetermined audio signal, determining that an activation state of the computing device is an inactive state.