A system is provided for adaptive demarcation of a selectively defined tonal scale on a musical instrument having a set of note actuators which span at least one musical octave. A scale acquisition portion acquires a tonal scale characterized at least by a predetermined mode and predetermined key signature, to define a predefined ordered series of tone components. The tone components are represented by different musical notes, and are successively separated in pitch by tonal intervals. A scale delineation portion coupled to the scale acquisition portion adaptively maps the tone components to a corresponding subset of the note actuators within at least one musical octave. A plurality of marker portions coupled respectively to the note actuators are selectively enabled according to the tone components' mapping to visually indicate the subset of note actuators corresponding thereto. Visual indication is thereby adaptively maintained for the note actuators of the acquired tonal scale.

An electronic clock mechanism includes an analog display device including a ring of dates and a stopwatch hand associated with a graduation of a small counter. The ring and hand are driven by a same electric motor via a permanent gear train, the hand being mounted on a wheel of the permanent gear train, the wheel arranged between a motor pinion and a movable element including a date driving wheel. The ring and date driving wheel respectively include two sets of teeth forming a permanent gear having a relatively large clearance to define a dead angle region for the date driving wheel as the ring is positioned by a jumper. The dead angle region is used to drive the stopwatch hand independently of the ring. The permanent gear train is arranged such that torque for positioning the rotor creates for the date driving wheel a blocking torque for shock-resistance.

A timepiece sub-assembly includes, irreversibly fixed to a main plate and each irreversibly pre-adjusted by the irreversible securing of adjustment and/or assembly components, after the particular timepiece function thereof has been adjusted and function checked on the test bench, functional modules including a gear train module, a display module, and a time-setting module. Other mechanical sub-assemblies, each irreversibly fixed to the preceding lower order mechanical sub-assembly, include various modules including motor module, frame-mounted self-winding device module, escapement holder regulating module, motion work train, date module, and self-winding module. A mechanical movement including at least one mechanical sub-assembly of this type and a watch including a mechanical movement of this type are also disclosed. A method of assembling mechanical sub-assemblies of this type by the irreversible securing of mechanical sub-assemblies and irreversibly pre-adjusted modules is also disclosed.

A timepiece sub-assembly includes, irreversibly fixed to a main plate and each irreversibly pre-adjusted by the irreversible securing of adjustment and/or assembly components, after the particular timepiece function thereof has been adjusted and function checked on the test bench, functional modules including a gear train module, a display module, and a time-setting module. Other mechanical sub-assemblies, each irreversibly fixed to the preceding lower order mechanical sub-assembly, include various modules including motor module, frame-mounted self-winding device module, escapement holder regulating module, motion work train, date module, and self-winding module. A mechanical movement including at least one mechanical sub-assembly of this type and a watch including a mechanical movement of this type are also disclosed. A method of assembling mechanical sub-assemblies of this type by the irreversible securing of mechanical sub-assemblies and irreversibly pre-adjusted modules is also disclosed.

Timepiece movement including a date display drive device formed of a display disc including a toothing, said drive device including driving means and a drive source. The driving means includes a wheel set including pins, having a toothed wheel and a pinion including pins, and an engaging wheel engaging said toothed wheel. The pinion with pins includes a pair of pins configured to be positioned on either side of any tooth of the toothing. The toothed wheel of the pin wheel and the engaging wheel respectively have complementary non-circular profiles. When the two pins are oriented in a tangential direction to the toothing, these two wheels have a first gear ratio that is lower than a second gear ratio between them when the two pins are in perpendicular alignment to said tangential direction.

A method for extracting the most representative segments of a musical composition, represented by an audio signal, according to which the audio signal is preprocessed by a set of preprocessors, each if which is adapted to identify a rhythmic pattern. The output of the preprocessors that provided the most periodic or rhythmical patterns in the musical composition selected and the musical composition is divided into bars with rhythmic patterns, while iteratively checking and scoring their quality and detecting a section that is a sequence of bars with score above a predetermined threshold. Checking and scoring is iteratively repeated until all sections are detected. Then similarity matrices between all bars that belong to the musical composition are constructed, based on MFCCs of the processed sound, chromograms and the rhythmic patterns. Then equivalent classes of similar sections are extracted along the musical composition. Substantial transitions between sections represented as blocks in the similarity matrices are collected and a representative segment is selected from each class with the highest number of sections.

A method and system for analyzing patterns in the relationships of notes of an input piece of music. The method comprises generating a set of the most frequently occurring note pitches in ascending pitch order that matches an interval pattern, and detecting out-of-key pitches that lie outside of this interval pattern. One or more potential key sequence bifurcations are identified which represent a list of possible key sequences according to forwards and backwards analysis. By finding patterns of repetition in the chordal sequences that may be generated according to these key sequence bifurcations, a key sequence that allows the most frequently recurring chord sequences may be chosen. Chord sequences may be analyzed by using ghost chords, temporary harmonic structures that are created, updated and finalized over time according to a combination of essential and inessential note fragments. The method further comprises identifying non-harmony pitches according to the analyzed chord sequence.

The timepiece (1) has a horizontal surface which is cut into four horizontal circular sectors of substantially the same size. An hour dial (6) and/or an hour wheel (18) substantially occupy a first sector, a minute dial (7) and/or a timer wheel (17) substantially occupy a second sector, a barrel (10) substantially occupies a third sector, and a balance (20) substantially occupies a fourth sector.

The timepiece (1) has a horizontal surface which is cut into four horizontal circular sectors of substantially the same size. An hour dial (6) and/or an hour wheel (18) substantially occupy a first sector, a minute dial (7) and/or a timer wheel (17) substantially occupy a second sector, a barrel (10) substantially occupies a third sector, and a balance (20) substantially occupies a fourth sector.

A display device (10) for a watch movement, including: a display (11) intended to be mounted movable relative to a structure (12) of the watch movement and provided with a member (110) for indexing relative to said structure (12), and with a driven wheel (111) whose rotation causes movement of the display (11); a drive mechanism (20) including a driving wheel (21) intended to drive the driven wheel (111) in rotation; and a coupling mechanism (30) including a transmission wheel (31) meshing with the driving wheel (21) and the driven wheel (111), the coupling mechanism (30) being configured so that the centre of rotation of the transmission wheel (31) has a degree of mobility relative to the driving (21) and driven (111) wheels.