An acoustic layer is added to a keyboard-type device including: enclosing walls, optionally—one or more microphones, a signal processing device, at least one audio transducer, and an acoustic waveguide. The acoustic layer adjoins one or more internal areas of a keyboard-type device. The signal processing device receives an internal signal from an electronic device either through wires or wirelessly. The signal processing device provides a directive sound enhancement of the audio input signals based on room acoustics, such as reverberation, echo, noise, delay, frequency response, and/or speaker-positional information that is determined by the signal processing device. The audio transducer device generates an audible audio output in response to an audio signal output from the signal processing device. The acoustic waveguide receives the audible audio output and generates an enhanced bass audio output from the acoustic waveguide.

A case having a recessed holding, an acoustic waveguide, and at least one audio transducer device. The recessed holding well is configured to receive and captively hold a stand-alone keyboard within the recessed holding well. The acoustic waveguide is integrated with a bottom cover of the case and between a bottom surface of the case and the recessed holding well. The at least one audio transducer device is coupled to a signal processing device and the acoustic waveguide. The at least one audio transducer device is configured to generate an audible audio output in response to an audio signal output from the signal processing device. The acoustic waveguide is configured to receive the audible audio output and generate an enhanced bass audio output.

Example techniques relate to changing a playback device mode based on a device base. In an example implementation, a first playback device operates in a first mode where it is connected to a first network and plays back audio content while in the first mode. The playback device detects connection of the first playback device to a device base and while the first playback device is on the device base, detects connection to a second network. The first playback device switches from operating in the first mode to operating in a second mode. The first playback device forms a stereo pair configuration with a second playback device over the second network in the second mode. While in the second mode, the first playback device plays back a first channel of audio content in synchrony with the second playback device playing back a second channel of the audio content.

A sound amplifying facility includes a headphone having a wireless transmitting and receiving module for transmitting and receiving an information from an electric facility, and an amplifying mechanism having a signal receiving and amplifying module for receiving and amplifying the information from the headphone. The headphone includes a wireless charging module, and the amplifying mechanism includes a wireless charging unit for charging the headphone wirelessly. The amplifying mechanism includes a socket for engaging with the headphone. The socket includes a conductor, and the headphone includes a terminal for engaging with the conductor of the socket.

The portable stereo music playback system of the present invention includes a portable pure stereo music player and stereo earphones. The left and right channels of the player have two or more electronic frequency dividing(crossover) circuits respectively. The audio domain is continuously divided, and each electronic crossover circuit is output independently through a multi-contact connector. The earphone has a left-channel earphone and a right-channel earphone. There are the same number of driver units according to the numbers of electronic crossover circuits in the left and right channels of the player. Each driver (sounding) unit in the left-channel earphone and the right-channel earphone is connected to the player through an independent wire via a multi-contact connector, the left channel driver units and the right channel driver units in the earphone respectively play back the sound of the audio segments corresponding to the electronic crossover circuits of the left and right channels of the player.

The disclosure provides a personal media system including a base station and a wireless earbud. The personal media system interacts with a smartphone for wireless pairing. The base station has a connection hole to receive the wireless earbud. When the wireless earbud is plugged into the connection hole, the base station and wireless earbud form an integrated body.

An audio apparatus includes a network interface, a receiver, at least one storage, and at least one processor. The processor is configured to determine that the audio apparatus is in a state capable of communicating with the other audio apparatus via the network interface. The processor is also configured to receive audio data via the receiver transmitted from an external apparatus different from the other audio apparatus. The processor is also configured to output a sound based on the received audio data. The processor is also configured to transmit the sound emission control information stored in the at least one storage to the other audio apparatus. The sound emission control information includes one or more of a sound volume, and a frequency band.

Systems and method are disclosed for facilitating efficient calibration of filters for correcting room and/or speaker-based distortion and/or binaural imbalances in audio reproduction, and/or for producing three-dimensional sound in stereo system environments. According to some embodiments, using a portable device such as a smartphone or tablet, a user can calibrate speakers by initiating playback of a test signal, detecting playback of the test signal with the portable device's microphone, and repeating this process for a number of speakers and/or device positions (e.g., next to each of the user's ears). A comparison can be made between the test signal and the detected signal, and this can be used to more precisely calibrate rendering of future signals by the speakers.

Systems and methods are disclosed in which a playback device transmits a first sound signal including a predetermined waveform. In one example, the playback device receives a second sound signal including at least one reflection of the first sound signal. The second sound signal is processed to determine a location of a person relative to the playback device, and a characteristic of audio reproduction by the playback device is selected, based on the determined location of the person.

A display apparatus is provided. The display apparatus includes a power supply; a connection interface; and a processor configured to: identify whether a device connected to the connection interface comprises a speaker or a wireless power transmitter, based on the device being identified as comprising the speaker, provide power supplied from the power supply and a sound signal to the speaker, and based on the device being identified as comprising the wireless power transmitter, provide power supplied from the power supply to the wireless power transmitter.