Server side hotwording

A non-transitory computer storage medium encoded with instructions that, when executed by a computer, cause the computer to perform operations comprising:

• receiving, from a client device, an audio signal encoding one or more utterances including one or more first utterances for which the client device determined that at least a portion of the one or more first utterances satisfies a first threshold of being at least a portion of a key phrase;
• determining whether the one or more first utterances satisfy a second threshold of being at least a portion of the key phrase, the second threshold more restrictive than the first threshold;
• and
• sending, to the client device, a result of determining whether the one or more first utterances satisfy the second threshold of being the key phrase, comprising:
• sending, to the client device, data indicating that the key phrase is not likely included in the audio signal in response to determining that the one or more first utterances do not satisfy the second threshold of being the key phrase, or
• sending, to the client device, data for the audio signal in response to determining that the one or more first utterances satisfy the second threshold of being the key phrase.

A computer-implemented method comprising:

• receiving, from a client device, an audio signal encoding one or more utterances including one or more first utterances for which the client device determined that at least a portion of the one or more first utterances satisfies a first threshold of being at least a portion of a key phrase;
• determining whether the one or more first utterances satisfy a second threshold of being at least a portion of the key phrase, the second threshold more restrictive than the first threshold;
• and
• sending, to the client device, a result of determining whether the one or more first utterances satisfy the second threshold of being the key phrase, comprising:
• sending, to the client device, data indicating that the key phrase is not likely included in the audio signal in response to determining that the one or more first utterances do not satisfy the second threshold of being the key phrase, or
• sending, to the client device, data for the audio signal in response to determining that the one or more first utterances satisfy the second threshold of being the key phrase.