Disclosed are systems and methods for processing an audio signal. In particular, there is provided a method for determining dynamic gain values to be applied on a digital input signal. The digital signal may be arranged in blocks. The dynamic gain values may be used for attenuating input signal values exceeding a clipping threshold. More particularly, the method comprising, for each signal block, passing backwards over the next signal block and the current signal block to produce a preliminary gain contour from the input signal; and passing forwards over the current signal block to produce a final gain contour for the current signal block based on the preliminary gain contour, wherein the gain contours are produced by applying an instant gain ascent and a smooth gain decay to the gain contours.

Electroacoustic bouzouki with perforated vessel, for exercise as well as for concerts having a neck (1) which reaches until tailpiece (2), head (3), tuning keys for fastening strings (4), electromagnet (5) and bridge (6) on the front part (7) over which the strings pass (4), preamplifier (9) and amplifier (10) in its body, output (12), electric signal and battery (16), bearing, a rear part called vessel (13). The vessel carries on its surface at least one user-defined opening of any shape and is mounted on the front part (7) of the body by gluing or screwing. The best use of the electroacoustic bouzouki with perforated vessel takes place when the number of openings ranges from 2 to 6.

Electroacoustic bouzouki with perforated vessel, for exercise as well as for concerts having a neck (1) which reaches until tailpiece (2), head (3), tuning keys for fastening strings (4), electromagnet (5) and bridge (6) on the front part (7) over which the strings pass (4), preamplifier (9) and amplifier (10) in its body, output (12), electric signal and battery (16), bearing, a rear part called vessel (13). The vessel carries on its surface at least one user-defined opening of any shape and is mounted on the front part (7) of the body by gluing or screwing. The best use of the electroacoustic bouzouki with perforated vessel takes place when the number of openings ranges from 2 to 6.

A portable miniature sound amplifying apparatus for use with an electric guitar having a guitar jack, includes a body, an electric sound amplifying device positioned in the interior space of the body, and a guitar plug in electrical communication with the electric sound amplifying device that includes a male configuration for selectively mating with the guitar jack of the electric guitar. A speaker is mounted to the electric sound amplifying device and may be directionally articulated and is configured to receive and emit sound data from the guitar via the guitar plug. One or more stabilizer arms may be pivotally coupled to the sound amplifying device and positioned to protect a guitar from being damaged thereby.

An integrated transducer-processor unit for use with a stringed instrument having one or more strings. When the instrument is played, the unit produces electrical output signals for conversion into musical sounds. A transducer converts mechanical vibrations of each of the strings into corresponding electrical signals, and a processor processes the electrical signals to produce selected analog or digital output signals for conversion into musical sounds. The unit processor is integrated with the transducer into a pickup, for mounting on the instrument in proximity to the strings without modification of the instrument. In addition, a gesture pad-processor system provides an interface for a user to send control signals to a device to control at least one function of the device. A touch pad receives positional and pressure inputs entered by the user making a selected predefined manual gesture for conversion into a control signal by the system processor.

A keyboard with strum string apparatus for creating accurate guitar sounds with an electronic keyboard includes a microcontroller is coupled within a keyboard body. A power source, a pair of speakers, a plurality of control buttons, and a plurality of piano keys are coupled to the keyboard body and are in operational communication with the microcontroller. A plurality of piano keys is coupled to the keyboard body. A strum board is coupled to the keyboard body. The strum board has a strum base coupled to the keyboard body, a pair of bridges coupled to the strum base, a plurality of strings extending between the pair of bridges, and a pickup coupled to the strum base. The pickup is in operational communication with the microcontroller.

An electric stringed musical instrument (e.g., guitar) system includes an acoustics system and an electronics system (module). The electronics system includes a base shaped to slidably engage the slot in the acoustics system. The module is held in place by respective sets of magnets in the acoustics system and the electronics system. The aggregate magnetic force near a bottom edge of the electronics system are stronger than the aggregate magnetic force near a top edge of the electronics system to ensure alignment of the bottom edges of the acoustics system and the electronics system.

An amplifier and a method of outputting a waveform of a music signal capable of outputting a waveform of a music signal exceeding a power supply voltage is provided. An amplifier includes a power supply, an input terminal for a music signal, an amplifying circuit which amplifies the music signal using the power supply, and a jumping-up circuit which is connected to an output end of the amplifying circuit and outputs a waveform exceeding a voltage value of the power supply.

A power system on an electric guitar may include a cover plate covering a standard cavity in the electric guitar. A rechargeable power source may be contained within the standard cavity and may not extend beyond an external surface of the cover plate. Other instruments or configurations may be used.

A power system on an electric guitar may include a cover plate covering a standard cavity in the electric guitar. A rechargeable power source may be contained within the standard cavity and may not extend beyond an external surface of the cover plate. Other instruments or configurations may be used.