G
SECTION G — PHYSICS
  
INSTRUMENTS
 G10
MUSICAL INSTRUMENTS; ACOUSTICS
 G10

Note(s)

  1. This class covers generally all sound-emitting devices, whether or not they may be considered as being musical.
  2. The term "musical instrument", used in this class, should not be understood as excluding devices emitting a single sound signal.
  3. For the convenience of users, the following Class Index is given in place of Sub-class Indexes, to show the grouping of the elaborations belonging to different sub-classes, under the three fundamental types:

    Wind instruments

    String instruments

    Percussion instruments

    which relate clearly to the majority of instruments.

  4. There are of course some instruments of which the principle of operation belongs less clearly to one of these three types. They correspond to groups G10D 17/00 and G10K 7/00, G10K 9/00, G10K 10/00, all the other groups normally finding a definite place.
 G10H
ELECTROPHONIC MUSICAL INSTRUMENTS (electronic circuits in general H03)
 G10H

Note(s)

This sub-class deals with musical instruments in which individual notes are constituted as electric oscillations under the control of a performer and the oscillations are converted to sound-vibrations by a loud-speaker or equivalent instrument.

 G10H 1/00
Details of electrophonic musical instruments (keyboards applicable also to other musical instruments G10B, G10C)
 G10H 1/02
·  Means for controlling the tone frequencies, e.g. attack, decay; Means for producing special musical effects, e.g. vibrato, glissando
 G10H 1/04
·  ·  by additional modulation
 G10H 1/043
·  ·  ·  Continuous modulation  [3]
 G10H 1/045
·  ·  ·  ·  by electromechanical means  [3]
 G10H 1/047
·  ·  ·  ·  by acousto-mechanical means, e.g. rotating speakers or sound deflectors  [3]
 G10H 1/053
·  ·  ·  during execution only  [3]
 G10H 1/055
·  ·  ·  ·  by switches with variable impedance elements  [3]
 G10H 1/057
·  ·  ·  ·  by envelope-forming circuits  [3]
 G10H 1/06
·  ·  Circuits for establishing the harmonic content of tones
 G10H 1/08
·  ·  ·  by combining tones (G10H 1/14, G10H 1/16 take precedence; chord G10H 1/38; analysis or synthesis of sound waves per se G10L)  [3]
 G10H 1/10
·  ·  ·  ·  for obtaining chorus, celeste or ensemble effects (continuous modulation G10H 1/043)  [3]
 G10H 1/12
·  ·  ·  by filtering complex wave forme (G10H 1/14, G10H 1/16 take precedence)  [3]
 G10H 1/14
·  ·  ·  during execution (modulation during execution G10H 1/053)  [3]
 G10H 1/16
·  ·  ·  by non-linear elements (G10H 1/14 takes precedence; generation of non-sinusoidal basic tones G10H 5/10)  [3]
 G10H 1/18
·  Selecting circuits  [3]
 G10H 1/20
·  ·  for transposition  [3]
 G10H 1/22
·  ·  for suppressing tones; Preference networks  [3]
 G10H 1/24
·  ·  for selecting plural preset register stops  [3]
 G10H 1/26
·  ·  for automatically producing a series of tones  [3]
 G10H 1/28
·  ·  ·  to produce arpeggios  [3]
 G10H 1/30
·  ·  ·  to reiteratively sound two tones  [3]
 G10H 1/32
·  Constructional details  [3]
 G10H 1/34
·  ·  Switch arrangements, e.g. keyboards or mechanical switches peculiar to electrophonic musical instruments (keyboards applicable also to other musical instruments G10B, G10C)  [3]
 G10H 1/36
·  Accompaniment arrangements  [3]
 G10H 1/38
·  ·  Chord  [3]
 G10H 1/40
·  ·  Rhythm (metronomes G04F 5/02)  [3]
 G10H 1/42
·  ·  ·  comprising tone forming circuits  [3]
 G10H 1/44
·  Tuning means  [3]
 G10H 1/46
·  Volume control  [3]
 G10H 3/00
Instruments in which the tones are generated by electromechanical means
 G10H 3/02
·  using mechanical interrupters
 G10H 3/03
·  using pick-up means for reading recorded waves, e.g. on rotating discs  [3]
 G10H 3/04
( transferred to G10H 3/03 )
 G10H 3/06
·  ·  using photoelectric pick-up means
 G10H 3/08
·  ·  using inductive pick-up means
 G10H 3/09
·  ·  ·  using tapes or wires  [3]
 G10H 3/10
·  ·  using capacitive pick-up means
 G10H 3/12
·  using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument  [3]
 G10H 3/14
·  ·  using mechanically actuated vibrators with pick-up means (G10H 3/24 takes precedence)  [3]
 G10H 3/16
·  ·  ·  using a reed  [3]
 G10H 3/18
·  ·  ·  using a string, e.g. electric guitar  [3]
 G10H 3/20
·  ·  ·  using a tuning fork, rod or tube  [3]
 G10H 3/22
·  ·  using electromechanically actuated vibrators with pick-up means (G10H 3/24 takes precedence)  [3]
 G10H 3/24
·  ·  incorporating feed-back means, e.g. acoustic  [3]
 G10H 3/26
·  ·  ·  using electric feed-back  [3]
 G10H 5/00
Instruments in which the tones are generated by means of electronic generators (G10H 7/00 takes precedence)
 G10H 5/02
·  using generation of basic tones
 G10H 5/04
·  ·  with semiconductor devices as active elements (G10H 5/10, G10H 5/12 take precedence)
 G10H 5/06
·  ·  tones generated by frequency multiplication or division of a basic tone
 G10H 5/07
·  ·  ·  resulting in complex waveforms  [3]
 G10H 5/08
·  ·  tones generated by heterodyning
 G10H 5/10
·  using generation of non-sinusoidal basic tones, e.g. sawtooth
 G10H 5/12
·  ·  using semiconductor devices as active elements
 G10H 5/14
·  using electromechanical resonator, e.g. quartz crystal, as frequency-determining element  [3]
 G10H 5/16
·  using cathode ray tube  [3]
 G10H 7/00
Instruments in which the tones are synthesised from a data store, e.g. computer organs (analysis or synthesis of sound waves per se G10L)  [3]