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 for which the client device determined that at least a portion of the one or more utterances satisfies a first threshold of being at least a portion of a key phrase;
• determining whether the one or more 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, data when it is determined that the one or more utterances do not satisfy the second threshold of being the key phrase.

An apparatus, comprising:

• processing circuitry configured to
• receive, from a client device, an audio signal encoding one or more utterances for which the client device determined that at least a portion of the one or more utterances threshold of being at least a portion of a key phrase,
• determine whether the one or more 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
• send, to the client device, data when it is determined that the one or more utterances do not satisfy the second threshold of being the key phrase.