Abstract: Systems, methods, apparatus, and articles of manufacture to learn and share remote commands are disclosed. An example method to configure a playback device to be controlled by a remote control includes receiving by the playback device a first code for a first command from the remote control. The example method includes identifying by the playback device a second code for a second command based on the received first code. The example method includes receiving by the playback device the second code from the remote control. The example method includes executing the second command by the playback device.

Abstract: Examples involve calibration of two synchronous playback groups. In an example implementation, a first playback device forms a first group with a second playback device. While formed into the first group, the first playback device plays back a first calibration sound contemporaneously with the second playback device. The first playback device forms a second group with a third playback device. While formed into the second group, the first playback device repeatedly plays back a second calibration sound contemporaneously with the third playback device. The first playback device receives data representing (i) first audio processing coefficients and (ii) second audio processing coefficients. The first playback devices applies the first audio processing coefficients to playback of audio content when formed into the first group and the second audio processing coefficients to playback of audio content when formed into the second group.

Abstract: A dry audio signal may be received. An envelope of the dry audio signal may be compared to a threshold of the playback device to determine a dry excess. A filter may be applied to the dry audio signal to generate a wet audio signal. An envelope of the wet audio signal may be compared to the threshold to determine a wet excess. Based on the dry and wet excess, a dry gain may be determined for the dry audio signal and a wet gain may be determined for the wet audio signal. The wet audio signal and the dry audio signals may be mixed in proportion to respective gains. The mixed audio signal may avoid exceeding an operational limit associated with audio playback on the playback device.

Abstract: Examples involve calibration of a synchronous playback group. In an example implementation, a first playback device forms a synchronous playback group with a second playback device. While part of the synchronous playback group, the first playback device receives a command to repeatedly emit a calibration sound according to a sequence for duration of time. Based on the command, the first playback device emits the calibration sound contemporaneously with emission of the calibration sound by the second playback device. Emission of the calibration sound by the first playback device and emission of the calibration sound by the second playback device are staggered such that each emitted calibration sound is delayed relative to a preceding emitted calibration sound. After the duration of time, the first playback device receives data indicating audio processing coefficients and applies the audio processing coefficients when playing back audio content in the synchronous playback group.

Abstract: A dry audio signal may be received. An envelope of the dry audio signal may be compared to a threshold of the playback device to determine a dry excess. A filter may be applied to the dry audio signal to generate a wet audio signal. An envelope of the wet audio signal may be compared to the threshold to determine a wet excess. Based on the dry and wet excess, a dry gain may be determined for the dry audio signal and a wet gain may be determined for the wet audio signal. The wet audio signal and the dry audio signals may be mixed in proportion to respective gains. The mixed audio signal may avoid exceeding an operational limit associated with audio playback on the playback device.

Abstract: A dry audio signal may be received. An envelope of the dry audio signal may be compared to a threshold of the playback device to determine a dry excess. A filter may be applied to the dry audio signal to generate a wet audio signal. An envelope of the wet audio signal may be compared to the threshold to determine a wet excess. Based on the dry and wet excess, a dry gain may be determined for the dry audio signal and a wet gain may be determined for the wet audio signal. The wet audio signal and the dry audio signals may be mixed in proportion to respective gains. The mixed audio signal may avoid exceeding an operational limit associated with audio playback on the playback device.

Abstract: Systems, methods, apparatus, and articles of manufacture to learn and share remote commands are disclosed. An example method to configure a playback device to be controlled by a remote control includes receiving by the playback device a first code for a first command from the remote control. The example method includes identifying by the playback device a second code for a second command based on the received first code. The example method includes receiving by the playback device the second code from the remote control. The example method includes executing the second command by the playback device.

Abstract: Examples involve calibration of a synchronous playback group. In an example implementation, a first playback device forms a synchronous playback group with a second playback device. While part of the synchronous playback group, the first playback device receives a command to repeatedly emit a calibration sound according to a sequence for duration of time. Based on the command, the first playback device emits the calibration sound contemporaneously with emission of the calibration sound by the second playback device. Emission of the calibration sound by the first playback device and emission of the calibration sound by the second playback device are staggered such that each emitted calibration sound is delayed relative to a preceding emitted calibration sound. After the duration of time, the first playback device receives data indicating audio processing coefficients and applies the audio processing coefficients when playing back audio content in the synchronous playback group.

Abstract: An acoustic filter includes holes and is configured to receive sound waves generated by an audio driver of a playback device. The sound waves comprise sound waves of a first frequency that radiate according to a first radiation pattern and sound waves of a second frequency that radiate according to a second radiation pattern that is less directed along an axis of the audio driver than the first radiation pattern. The second frequency is lower than the first frequency. The acoustic filter is configured to attenuate the sound waves of the first frequency so that the attenuated sound waves of the first frequency are emitted from the acoustic filter according to an effective radiation pattern that is less directed along the axis of the audio driver than the first radiation pattern and pass the sound waves of the second frequency in substantial accordance with the second radiation pattern.

Abstract: Systems, methods, apparatus, and articles of manufacture to learn and share remote commands are disclosed. An example method to configure a playback device to be controlled by a remote control includes receiving by the playback device a first code for a first command from the remote control. The example method includes identifying by the playback device a second code for a second command based on the received first code. The example method includes receiving by the playback device the second code from the remote control. The example method includes executing the second command by the playback device.

Abstract: An example implementation may involve a computing device detecting a trigger condition that initiates concurrent calibration of multiple playback devices. The implementation may further involve the computing device sending, to at least one of the multiple playback devices, one or more commands that instruct each playback device of the multiple playback devices to repeatedly output a calibration sound according to a sequence. The sequence involves the calibration sound cycling through frequencies of a calibration frequency range and the one or more commands instruct the multiple playback devices to stagger emission of the calibration sounds such that each successive calibration sound is outputted at a delay relative to output of a preceding calibration sound. During the output of the calibration sounds, the implementation may also involve the computing device detecting, via at least one microphone, an audio signal comprising the outputted calibration sounds.

Abstract: Example techniques involve calibration of multiple playback devices. An example implementation receives, via a user interface of the network device, an input to initiate calibration of a group of playback devices comprising a first playback device and a second playback device configured to playback audio content in synchrony. After initiating the calibration of the group of playback devices, the implementation detects audio content rendered synchronously by the first playback device and the second playback device. Based on the detected audio content, the implementation determines a first equalization adjustment for the first playback device and a second equalization for the second playback device and causes the first playback device to apply the first equalization adjustment and the second playback device to apply the second equalization adjustment when the first playback device and the second playback device play audio content synchronously as part of the group of playback devices.

Abstract: A dry audio signal may be received. An envelope of the dry audio signal may be compared to a threshold of the playback device to determine a dry excess. A filter may be applied to the dry audio signal to generate a wet audio signal. An envelope of the wet audio signal may be compared to the threshold to determine a wet excess. Based on the dry and wet excess, a dry gain may be determined for the dry audio signal and a wet gain may be determined for the wet audio signal. The wet audio signal and the dry audio signals may be mixed in proportion to respective gains. The mixed audio signal may avoid exceeding an operational limit associated with audio playback on the playback device.

Abstract: Systems and methods are provided for device playback calibration. An example implementation involves a network device displaying a guide to calibrate at least one playback device. The example implementation also involves detecting, at a first time, a first audio content rendered by the at least one playback device and detecting, at a second time, a second audio content rendered by the at least one playback device. The example implementation further involves causing determination of an equalization adjustment based on an analysis of the first audio content and the second audio content.

Abstract: An acoustic filter includes holes and is configured to receive sound waves generated by an audio driver of a playback device. The sound waves comprise sound waves of a first frequency that radiate according to a first radiation pattern and sound waves of a second frequency that radiate according to a second radiation pattern that is less directed along an axis of the audio driver than the first radiation pattern. The second frequency is lower than the first frequency. The acoustic filter is configured to attenuate the sound waves of the first frequency so that the attenuated sound waves of the first frequency are emitted from the acoustic filter according to an effective radiation pattern that is less directed along the axis of the audio driver than the first radiation pattern and pass the sound waves of the second frequency in substantial accordance with the second radiation pattern.

Abstract: Systems, methods, apparatus, and articles of manufacture to learn and share remote commands are disclosed. An example method to configure a playback device to be controlled by a remote control includes receiving by the playback device a first code for a first command from the remote control. The example method includes identifying by the playback device a second code for a second command based on the received first code. The example method includes receiving by the playback device the second code from the remote control. The example method includes executing the second command by the playback device.

Abstract: Systems and methods are provided for device playback calibration. An example implementation involves a computing device receiving, via a microphone, detected audio content rendered by at least one playback device. The implementation also involves the computing device modulating the detected audio content with a modulation signal such that the modulation signal has a modulation frequency determined based on an input frequency range of a processing unit. The implementation also involves providing the modulated audio content to the processing unit; and determining, via the processing unit, an equalization setting for the at least one playback device.

Abstract: An example implementation may involve a computing device detecting a trigger condition that initiates concurrent calibration of multiple playback devices. The implementation may further involve the computing device sending, to at least one of the multiple playback devices, one or more commands that instruct each playback device of the multiple playback devices to repeatedly output a calibration sound according to a sequence. The sequence involves the calibration sound cycling through frequencies of a calibration frequency range and the one or more commands instruct the multiple playback devices to stagger emission of the calibration sounds such that each successive calibration sound is outputted at a delay relative to output of a preceding calibration sound. During the output of the calibration sounds, the implementation may also involve the computing device detecting, via at least one microphone, an audio signal comprising the outputted calibration sounds.

Abstract: An acoustic filter includes holes and is configured to receive sound waves generated by an audio driver of a playback device. The sound waves comprise sound waves of a first frequency that radiate according to a first radiation pattern and sound waves of a second frequency that radiate according to a second radiation pattern that is less directed along an axis of the audio driver than the first radiation pattern. The second frequency is lower than the first frequency. The acoustic filter is configured to attenuate the sound waves of the first frequency so that the attenuated sound waves of the first frequency are emitted from the acoustic filter according to an effective radiation pattern that is less directed along the axis of the audio driver than the first radiation pattern and pass the sound waves of the second frequency in substantial accordance with the second radiation pattern.

Abstract: Systems and methods are provided for device playback calibration. An example implementation involves a network device detecting, at a first time, a first audio content rendered by at least one first playback device. The example implementation also involves the network device detecting, at a second time, a second audio content rendered by at least one second playback device. The example implementation further involves causing, via the network device, determination of an equalization adjustment for one or more of the at least one first playback device and the at least one second playback device based on an analysis of the detected first audio content and the detected second audio content.