Abstract: Embodiments are provided for intelligently activating an amplifier in a playback device based on proximity detection. The playback device may be in a quasi-idle state when the playback device is not rendering media content. The quasi-idle state of the playback device may involve an amplifier in the playback device being inactive, while some other components or modules of the playback devices remain active. The playback device may include a proximity sensor configured to detect movement relative to the playback device. If movement is detected indicating that a user input to cause the playback device to render media content is anticipated, the amplifier may be pre-emptively activated such that the playback device enters an active state from the quasi-idle state. In some cases, the playback device may send a message to one or more other playback devices to cause the other playback devices to enter an active state.

Abstract: An example implementation involves a playback device receiving, from a control device, data indicating an addition of a first media item to a queue that is playable by the playback device. This first media item is available to the first playback device at a first network location. The example implementation also involves determining that the first media item is unavailable to the playback device by determining that the control device has disconnected from the media playback system. Based on determining that the first media item is unavailable to the playback device, the playback device identifies a second media item that is equivalent to the first media item. This second media item is available to the playback device at a second network location that is different from the first network location and the playback device. The playback device replaces the first media item in the queue with the second media item.

Abstract: A playback device may be communicatively connected to a network device at a demonstration location. After connecting to the network device, the playback device may receive from the network device, a message indicating media content for playback by the playback device. In response to receiving the message, the playback device may play the media content, where playing the media content comprises modifying a default configuration of a demonstration mode. After receiving the message, the playback device may be disconnected from the network device. After disconnecting from the network device, the playback device may return to the default configuration of the demonstration mode.

Abstract: Example implementations described herein may involve activating an amplifier in a playback device based on an anticipated command. An example implementation involves a first playback device determining that a command associated with the first playback device is anticipated. Based on the determination that that the command is anticipated, the first playback device identifies one or more second playback devices of a zone group that is associated with the playback device and causes the one or more second playback devices of the zone group to activate respective amplifiers.

Abstract: Systems, methods, and apparatus to process audio signals based on a number of listeners are disclosed. An example implementation involves a playback device processing, via an audio processing component, an audio signal for playback according to a first audio characteristic. While processing the audio signal for playback according to the first audio characteristic, the playback device detects, via a location component, a number of listeners in a listening area. The playback device determines a second audio characteristic based on the detected number of listeners in the listening area, and after determining the second audio characteristic, processes, via the audio processing component, the audio signal for playback according to the second audio characteristic.

Abstract: Embodiments are provided for cooling one or more components of a playback device using speaker vibrations that result from playback of inaudible audio. Movement of air molecules arising from the speaker vibrations may disperse heat away from the one or more components of a playback device. In an example implementation, a playback device detects that playback of audible audio content via at least one speaker has stopped, and in response to the detection, plays inaudible audio content to cause the at least one speaker to vibrate thereby inducing air movement within the playback device.

Abstract: Systems and methods are provided for audio device playback failure recovery and redistribution. The systems and methods may be configured to cause a plurality of playback devices to render audio content in a synchronized manner, detect a failure of a first playback device of the plurality of playback devices, determine a playback responsibility of the first playback device, and cause an adjustment of the rendering of the audio content by at least a second playback device of the plurality of playback devices. The systems and methods may further be configured to detect an addition of a new playback device to the plurality of playback devices, determine a playback responsibility of the new playback device for rendering the audio content, and cause an adjustment of the rendering of the audio content by at least a one playback device from the plurality of playback devices.

Abstract: Systems, methods, apparatus, and articles of manufacture to demonstrate playback device operation at a point of sale location are disclosed. An example system includes a playback device configured for demonstration playback by one or more users at the point of sale location. The example playback device is to respond to an allowed set of user commands to provide content playback. The example system includes a user control to facilitate user interaction with the playback device and to provide information for user review regarding the playback device. The example user control includes an option for user selection to provide additional information regarding playback device functionality. The example user control is restricted to provide repeatable playability of the playback device for demonstration at the point of sale location. The example system is to monitor the playback device for repeatable playability by users in the system.

Abstract: Systems, methods, and apparatus to calibrate sounds fields are disclosed. An example implementation involves a playback device detecting a change in a strength of a wireless signal received by the playback device via a wireless network interface. Based on the detected change of the wireless signal, the playback device generates localization data. The playback device also generates an analog audio signal based on at least (i) a digital audio signal and (ii) the generated localization information and plays the generated analog audio signal.

Abstract: Embodiments described herein provide for detecting presence of an object in proximity to a playback device and responsively performing one or more operations. In an example implementation, a playback device detects, via a proximity detector of the playback device, presence of an object in proximity to the playback device. In response to detecting the presence of the object, the playback device modifies both (i) playback of media by the playback device; and (ii) intensity of a light.

Abstract: Embodiments are provided for cooling one or more components of a playback device using speaker vibrations that result from inaudible audio. Movement of air molecules arising from the speaker vibrations may disperse heat away from the one or more components of a playback device. In an example implementation, while playing audible audio content via the at least one speaker, a playback device may receive input data indicating an instruction to stop playback of the audible audio content. The playback device may determine that playback of the audible audio content has stopped and based on that determination, play inaudible audio content to cause the at least one speaker to vibrate thereby inducing air movement within the playback device.

Abstract: Systems and methods are provided for audio device playback failure recovery and redistribution. The systems and methods may be configured to render an audio content according to a first playback responsibility that involves rendering both (a) a left channel of an audio content and (b) a right channel of the audio content, detect an instruction to form a stereo pair with another network device; render the audio content according to a second playback responsibility that involves rendering one of (a) the left channel of the audio content or (b) the right channel of the audio content; while rendering the audio content according to the second playback responsibility, detect a failure of the another network device; and render the audio content according to the first playback responsibility.

Abstract: Embodiments are provided for cooling one or more components of a playback device using speaker vibrations that result from inaudible audio. Movement of air molecules arising from the speaker vibrations may disperse heat away from the one or more components of a playback device. In an example implementation, while playing audible audio content via the at least one speaker, a playback device may receive input data indicating an instruction to stop playback of the audible audio content. The playback device may determine that playback of the audible audio content has stopped and based on that determination, play inaudible audio content to cause the at least one speaker to vibrate thereby inducing air movement within the playback device.

Abstract: An example implementation involves a playback device receiving, from a control device, data indicating an addition of a first media item to a queue that is playable by the playback device. This first media item is available to the first playback device at a first network location. The example implementation also involves determining that the first media item is unavailable to the playback device by determining that the control device has disconnected from the media playback system. Based on determining that the first media item is unavailable to the playback device, the playback device identifies a second media item that is equivalent to the first media item. This second media item is available to the playback device at a second network location that is different from the first network location and the playback device. The playback device replaces the first media item in the queue with the second media item.

Abstract: Systems, methods, and apparatus to calibrate sounds fields are disclosed. An example implementation involves causing, via a transducer of a network device, the network device to produce an auditory tone. After causing the network device to produce the auditory tone, the example implementation involves receiving, via a network interface of the network device from a playback device, data indicating a location of the network device corresponding to where the network device produced the auditory tone. The example implementation further involves causing the network device to display, based on the received data indicating the location of the network device, a visual representation of the received data indicating the location of the network device.

Abstract: Embodiments are provided for cooling one or more components of a playback device using speaker vibrations that result from inaudible audio. Movement of air molecules arising from the speaker vibrations may disperse heat away from the one or more components of a playback device. The playback device may include a thermal sensor to determine the temperature on or around one or more components. If the playback device is no longer playing audible audio and temperature on or around one or more components rises above a first predetermined threshold, the playback device may play inaudible audio. Playback of inaudible audio may result in movement of air molecules and the dispersion of heat away from the one or more components. Playback of the inaudible audio may stop if the playback device begins playing audible audio or if the temperature on or around one or more components drops below a second predetermined threshold.

Abstract: Embodiments are provided for accessing media content on a mobile device. In one embodiment, a user may add media from a mobile device carried by the user to a queue of media that may be rendered by a media system in communication with the mobile device. In one example, the user may select a subset of media from the mobile device to add to the queue, such that only the subset of media is accessible to the media system while the non-selected media on the mobile device remains private. In one case, the mobile device may become disconnected from the media system such that the added subset of media is no longer accessible by the media system. In this case, the media system may search for media equivalent to the subset of media, and replace the subset of media in the queue with the equivalent media.

Abstract: Example implementations described herein may involve activating an amplifier in a playback device based on an anticipated command. An example implementation involves a first playback device determining that a command associated with the first playback device is anticipated. Based on the determination that that the command is anticipated, the first playback device identifies one or more second playback devices of a zone group that is associated with the playback device and causes the one or more second playback devices of the zone group to activate respective amplifiers.

Abstract: Embodiments are disclosed for providing play/pause content. An example method includes receiving a command to play audio from a zone, the zone including one or more playback devices, wherein the zone is configured to play items from a playback queue responsive to the command to play audio. The example method also includes determining that the playback queue includes no playable items. The example method also includes automatically placing information identifying at least one playable item in the playback queue. The example method also includes, responsive to the command to play audio, causing to play the at least one playable item by the zone.

Abstract: Embodiments are provided for intelligently activating an amplifier in a playback device based on proximity detection. The playback device may be in a quasi-idle state when the playback device is not rendering media content. The quasi-idle state of the playback device may involve an amplifier in the playback device being inactive, while some other components or modules of the playback devices remain active. The playback device may include a proximity sensor configured to detect movement relative to the playback device. If movement is detected indicating that a user input to cause the playback device to render media content is anticipated, the amplifier may be pre-emptively activated such that the playback device enters an active state from the quasi-idle state. In some cases, the playback device may send a message to one or more other playback devices to cause the other playback devices to enter an active state.