News by Andrew Kameka on Friday March 07, 2014.
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When Google introduced the "Ok, Google" command to the Nexus 5, users were disappointed to learn that the feature works only on its home launcher. If Google-owned Motorola can support always-listening search prompts, why not do the same for the phone that's supposed to be a benchmark for all other Android devices? That's a complicated answer, especially when you remind someone that the Nexus 5 is capable of having always-on listening just like the Moto X; Google simply chose not to include it.
Guillaume Lesniak has posted a proof of concept video showing a Nexus 5 responding to the "Ok, Google" command while the screen is off. The ability to wake a phone at any time is critical to the Moto X's appeal, but the Nexus 5 typically works only on one screen. Lesniak managed to change that by using the dedicated audio processing chip used in the Qualcomm Snapdragon 800. He set the chip to listen out for the command at all times and recorded the video below to show it in action.
The easy explanation for why the Moto X supports always listening wake commands and the Nexus 5 doesn't is because Motorola is designed to use very little energy as it listens for the command. The Moto X has a low-power core engineered to do nothing but listen for commands, something that the Nexus 5 was not designed to do. Lesniak admits that his method is "far from being stable," but if one man can get it working, one would have to imagine that a team of engineers at Google and Qualcomm could have made this happen if they wanted to put in the time and money to get it right.via: Android Authority
Andrew is based in Miami, Florida.