Systems, devices, media, and methods are presented for playing audio sounds, such as music, on a portable electronic device using a digital color image of a note matrix on a map. A computer vision engine, in an example implementation, includes a mapping module, a color detection module, and a music playback module. The camera captures a color image of the map, including a marker and a note matrix. Based on the color image, the computer vision engine detects a token color value associated with each field. Each token color value is associated with a sound sample from a specific musical instrument. A global state map is stored in memory, including the token color value and location of each field in the note matrix. The music playback module, for each column, in order, plays the notes associated with one or more the rows, using the corresponding sound sample, according to the global state map.

The musical instrument tuner includes: a sensor device that is attached to a musical instrument; and an operation device that is able to perform wireless communication mutually with the sensor device, in which the sensor device includes an acceleration sensor that has at least two detection axes, frequency detection means for detecting, as a detected frequency, a frequency of a vibration of musical sound generated through an operation of the musical instrument based on an output from the acceleration sensor, and sensor-side communication means for transmitting transmission information including information regarding the detected frequency to the operation device, and the operation device includes operation-side communication means for receiving the transmission information transmitted from the sensor device, display means, and control means for generating tuning information of the musical instrument and causing the display means to display the tuning information based on the transmission information received from the sensor device.

A system that is distinct from a remote server and distinct from a client device receives, over a first communications channel, a first data stream for a first media item. The system receives, over a second communications channel, from an application at the client device, a second data stream for audio data that includes vocals provided by a user as the first media item plays. The system measures a latency of the second communications channel and overlays, with the first media item, the vocals provided by the user as the first media item plays to generate a composite data stream. The overlaying comprises offsetting the first data stream from the second data stream in accordance with the measured latency of the second communications channel and combining the first and second data streams in accordance with the offset of the data streams.

An electronic equipment according to an embodiment of the present disclosure includes: a reception circuit that receives a musical instrument digital interface (MIDI) message, time stamp information regarding an execution timing of the MIDI message, and offset information regarding buffering of the MIDI message; and a processor that controls the execution timing of the MIDI message according to the time stamp information on a basis of the offset information.

Described are systems, methods, apparatuses, and computer program products for wireless in-ear-monitoring (IEM) of audio. A system includes transmitter(s) configured to map orthogonal sub-carriers of a digital signal to narrowband receivers to form receiver-allocated audio channels, modulate the digital signal, and transmit the signal as an ultra-high frequency (UHF) analog carrier wave comprising the orthogonal sub-carriers to the nearby receiver. A narrowband receiver is configured to demodulate and sample the sub-carriers allocated to the receiver. Sub-carriers can be positioned orthogonal to one another in adjacent sub-bands of the frequency domain and beacon symbols and pilot signals can be iteratively provided in the same portion of the frequency domain for each channel. The receiver can use non-data-aided and data-aided approaches for synchronization of the time domain and frequency domain waveforms of the received signal to the transmitted signal prior to sampling the allocated sub-carriers.

An outdoor musical instrument, such as may be installed in a playground or other public outdoor recreational area, includes a machine-readable code. The code is readable by a mobile computing device, such as a smartphone or tablet, and, when read, furnishes the device with one or more interactive functions relating to the musical instrument and that provide enhanced play opportunities. The musical instrument may also include a stand configured for a user to place the device after reading the code in order to utilize the interactive functions while playing the instrument.

A wireless controller that allows a musician to wirelessly switch between audio effect presets, loops, and/or songs which are stored in a specialized audio/instrument cable or adapter. The wireless controller can be located in the same place as (or incorporated into) a digital guitar tuner on a guitar headstock allowing the musician to operate the wireless controller in a familiar location while switching between audio effect presets, loops, and/or songs by tapping on small buttons.

Methods, apparatus, and a system (collectively a “platform”) are disclosed for facilitating, enabling, or enhancing the creation, control, and playback of digital audio loops or parts. The method may comprise playing back a first midi segment of a song, the first midi segment comprising a first midi sequence repeated a predetermined number of times, transitioning to a second midi segment of the song after the first midi sequence is repeated for the predetermined number of times unless a first foot-operable switch is triggered, receiving a first activation command during the playback of the first midi segment and in response to the first activation command, modifying the predetermined number of times the first midi sequence is to be repeated wherein the first activation command is triggered based on, at least in part, a duration and frequency of a user application of the first foot-operable switch.

A communication system including a communication device, an electronic device, and a server is provided. The communication device includes an authorization information request part transmitting a request for authorization information, an authorization information reception part receiving the authorization information, a first data request information reception part receiving data request information, a data request information transmission part transmitting the received data request information, a data reception part receiving data, and a first data transmission part transmitting the received data. The server includes an identifier storage part storing the device identifier, an authorization information request reception part receiving the request for the authorization information, an authorization information creation part acquiring a user identifier and creating the authorization information, a first authorization information transmission part transmitting the created authorization information, a second data request information reception part receiving the data request information, and a second data transmission part transmitting the data.

A communication system including a communication device, a terminal configured to be able to communicate with the communication device, and a server is provided. The communication device includes a request transmission part transmitting to the terminal a request for connection information for connecting to the server, a connection information reception part receiving from the terminal the connection information requested by the request transmission part, and a connection part communicably connecting to the server by using the connection information received by the connection information reception part. The terminal includes a request reception part receiving the request for the connection information from the communication device, a connection information acquisition part, acquiring the connection information corresponding to the request for the connection information received by the request reception part, and a connection information transmission part, transmitting the connection information acquired by the connection information acquisition part to the communication device.