A digital content reproduction control signal for controlling a reproduction of digital content includes: a first control signal (SG1) having a time code signal recorded therein and having a predetermined frequency; and a second control signal (SG2) having a 2n-fold frequency of the frequency of the first control signal, n representing a natural number, in which the first control signal (SG1) and the second control signal (SG2) are combined such that zero-cross points of a waveform of the first control signal (SG1) are aligned with zero-cross points of a waveform of the second control signal (SG2) on a time axis.

Systems and methods for isolating audio content and biometric authentication include receiving, with an audio receiver, an audio signal spanning a plurality of frequency bands, identifying a speech signal carried by a voice frequency band selected from the plurality of frequency bands, enhancing the speech signal relative to other audio content within the audio signal, and extracting a voice profile key that uniquely identifies the speech signal, wherein enhancing the first speech signal comprises adjusting attack and release times of the speech signal based on sound events within the speech signal, the attack time being associated with very high frequency sounds that are not phase-shifted.

A system including a phonograph record implement having a phonograph record with a plurality of grooves operable for recording audio data. A record player device is configured to read the audio data contents of said phonograph record implement. A wheel appliance moves or rotates on said phonograph record implement to produce an audio signal and a needle appliance reads or translates a plurality of grooves to an audio signal as the record player device moves around the stationary phonograph record. A speed control switch is operable for selecting at least one preset speed from a plurality of varying preset speeds for said record player device to operate. A wireless transmitter, which transmits the audio signal to an external receiver, which receives the audio signal produced from said stationary phonograph record for listening remotely.

A detection system of vinyl record players for detecting end of playback is revealed. The system includes a vinyl record player and a vinyl record control module. The vinyl record player consists of a tone arm, a cartridge connected to one end of the tone arm, a stylus connected to the cartridge, and a turntable. The vinyl record control module is arranged at the vinyl record player and is composed of a signal analysis unit, a signal output unit, a signal reading unit, and a vinyl record control unit electrically connected. The vinyl record control unit is electrically connected to a turntable control unit for stopping rotation of the turntable, or electrically connected to a tone arm lifting unit for ascending the tone arm, or electrically connected to both the turntable control unit and the tone arm lifting unit.

A detection system of vinyl record players for detecting end of playback is revealed. The system includes a vinyl record player and a vinyl record control module. The vinyl record player consists of a tone arm, a cartridge connected to one end of the tone arm, a stylus connected to the cartridge, and a turntable. The vinyl record control module is arranged at the vinyl record player and is composed of a signal analysis unit, a signal output unit, a signal reading unit, and a vinyl record control unit electrically connected. The vinyl record control unit is electrically connected to a turntable control unit for stopping rotation of the turntable, or electrically connected to a tone arm lifting unit for ascending the tone arm, or electrically connected to both the turntable control unit and the tone arm lifting unit.

A system including a phonograph record implement having a phonograph record with a plurality of grooves operable for recording audio data. A record player device is configured to read the audio data contents of said phonograph record implement. A wheel appliance moves or rotates on said phonograph record implement to produce an audio signal and a needle appliance reads or translates a plurality of grooves to an audio signal as the record player device moves around the stationary phonograph record. A speed control switch is operable for selecting at least one preset speed from a plurality of varying preset speeds for said record player device to operate. A wireless transmitter, which transmits the audio signal to an external receiver, which receives the audio signal produced from said stationary phonograph record for listening remotely.

A system including a phonograph record implement having a phonograph record with a plurality of grooves operable for recording audio data. A record player device is configured to read the audio data contents of said phonograph record implement. A wheel appliance moves or rotates on said phonograph record implement to produce an audio signal and a needle appliance reads or translates a plurality of grooves to an audio signal as the record player device moves around the stationary phonograph record. A speed control switch is operable for selecting at least one preset speed from a plurality of varying preset speeds for said record player device to operate. A wireless transmitter, which transmits the audio signal to an external receiver, which receives the audio signal produced from said stationary phonograph record for listening remotely.

A variable magnetization machine controller including a hysteresis control component configured to receive an ideal magnetization state signal, output an actual magnetization signal based on the ideal magnetization state signal for control of a variable magnetization machine, and modify the actual magnetization state signal in accordance with an error value between the ideal magnetization state signal and the actual magnetization state signal.

A motion inducing system for playing sounds over a gramophone is provided. An electrical signal such as that from a digital music player is converted to lateral movement of a surface using a linear motion transducer. The lateral movement moves the stylus of a gramophone, and the music from the digital music source is played through the horn of the gramophone.

A motion inducing system for playing sounds over a gramophone is provided. An electrical signal such as that from a digital music player is converted to lateral movement of a surface using a linear motion transducer. The lateral movement moves the stylus of a gramophone, and the music from the digital music source is played through the horn of the gramophone.