A playback device (measurement device) in a record playback system including a record player and the playback device measures a frequency characteristic of each of a plurality of input signals which are input from the record player to the playback device when a plurality of test signals for measuring a characteristic of the record playback system are played back by the record player, the plurality of test signals being recorded on a phonograph record, the plurality of input signals corresponding to the plurality of test signals recorded; calculates a measurement error between the frequency characteristic of each of the plurality of input signals measured and a predetermined frequency characteristic; selects a frequency characteristic of which the measurement error is smallest from among the frequency characteristics of the plurality of input signals, as a measurement result of the record playback system; and outputs the measurement result selected.

Systems and methods are disclosed relating to electro-mechanical devices and related computer control and audio processing systems intended to optimize playback fidelity of phonograph records. Said recordings are manufactured by a process that employs a cutting head assembly driven in a straight path from the outer to the inner-most radius of the recordable surface. However, most record turntables device that are used to play back phonograph records rely on a stylus transducer attached to the end of a pivoting arm. Instead of the linear path followed by the original cutting head, said tonearm traces an arc across the surface of the recorded disk resulting in playback distortion proportional to error in alignment of said stylus relative to the tangent of the groove. This invention addresses this deficiency and produces an optimal audio quality of playback of phonograph records.

Systems and methods are disclosed relating to electro-mechanical devices and related computer control and audio processing systems intended to optimize playback fidelity of phonograph records. Said recordings are manufactured by a process that employs a cutting head assembly driven in a straight path from the outer to the inner-most radius of the recordable surface. However, most record turntables device that are used to play back phonograph records rely on a stylus transducer attached to the end of a pivoting arm. Instead of the linear path followed by the original cutting head, said tonearm traces an arc across the surface of the recorded disk resulting in playback distortion proportional to error in alignment of said stylus relative to the tangent of the groove. This invention addresses this deficiency and produces an optimal audio quality of playback of phonograph records.

A contact operation device includes an arm including a contact operation portion at a tip end thereof. The contact operation portion is configured to contact a touchscreen. The contact operation device further includes a support part configured to support the arm. The support part includes a first support mechanism configured to permit the arm to move such that the contact operation portion is carried in a horizontal direction, and a second support mechanism configured to allow the arm to move such that the contact operation portion is carried in a vertical direction.

A contact operation device includes an arm including a contact operation portion at a tip end thereof. The contact operation portion is configured to contact a touchscreen. The contact operation device further includes a support part configured to support the arm. The support part includes a first support mechanism configured to permit the arm to move such that the contact operation portion is carried in a horizontal direction, and a second support mechanism configured to allow the arm to move such that the contact operation portion is carried in a vertical direction.

A phonographic tonearm apparatus including a single filament mechanism for dynamically adjusting the azimuth of the cartridge stylus in real-time during playback of vinyl phonographic records while keeping the tonearm's pivot point in a fixed frictionless position. The tonearm's fixed pivot point provides a rigid and stable position for improved vertical and horizontal tracking performance while allowing for dynamic azimuth adjustment to optimize maximum signal separation of stereo audio channels. The azimuth control apparatus and mechanism also incorporates an integral anti-skate control mechanism that provides dynamic adjustment in real-time during playback of vinyl phonographic records.

A phonographic tonearm apparatus including a single filament mechanism for dynamically adjusting the azimuth of the cartridge stylus in real-time during playback of vinyl phonographic records while keeping the tonearm's pivot point in a fixed frictionless position. The tonearm's fixed pivot point provides a rigid and stable position for improved vertical and horizontal tracking performance while allowing for dynamic azimuth adjustment to optimize maximum signal separation of stereo audio channels. The azimuth control apparatus and mechanism also incorporates an integral anti-skate control mechanism that provides dynamic adjustment in real-time during playback of vinyl phonographic records.

To implement stable sound playback with high sound quality, a record player for playing back sound recorded on a phonograph record includes a rotator that rotates the phonograph record, a container arranged on a side of the rotator and capable of storing one of a liquid, powder, and gel, a float to be floated on the one of the liquid, the powder, and the gel stored, in a standstill state, in the container, an arm extended from the float in a direction of the rotator, and a phono cartridge attached to the arm and including a sound playback stylus.

To implement stable sound playback with high sound quality, a record player for playing back sound recorded on a phonograph record includes a rotator that rotates the phonograph record, a container arranged on a side of the rotator and capable of storing one of a liquid, powder, and gel, a float to be floated on the one of the liquid, the powder, and the gel stored, in a standstill state, in the container, an arm extended from the float in a direction of the rotator, and a phono cartridge attached to the arm and including a sound playback stylus.

To implement stable sound playback with high sound quality, a record player for playing back sound recorded on a phonograph record includes a rotator that rotates the phonograph record, a container arranged on a side of the rotator and capable of storing one of a liquid, powder, and gel, a float to be floated on the one of the liquid, the powder, and the gel stored, in a standstill state, in the container, an arm extended from the float in a direction of the rotator, and a phono cartridge attached to the arm and including a sound playback stylus.