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

Note(s)

This class covers generally all sound-emitting devices, whether or not they may be considered as being musical.

  1. The term "musical instrument", used in this class, should not be understood as excluding devices emitting a single sound signal.
  2. 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.
  3. 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 (structural combinations of microphones, pick-ups, or amplifiers with musical instruments G10B, G10C, G10D; instruments in which each note is generated by a different individually-actuated mechanical resonating structure and is amplified electrically G10C; instruments in which each note is produced by a different electrically-vibrated sounding element G10D; 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 1/06
·  ·  Circuits for combining harmonic frequencies to generate predetermined tone colours
 G10H 3/00
Instruments in which the tones are generated by electromechanical means
 G10H 3/02
·  using mechanical interrupters
 G10H 3/04
·  using pick-up means for reading-off waves recorded on rotating discs
 G10H 3/06
·  ·  using photoelectric pick-up means
 G10H 3/08
·  ·  using inductive pick-up means
 G10H 3/10
·  ·  using capacitive pick-up means
 G10H 5/00
Instruments in which the tones are generated by means of electronic generators
 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 5/08
·  ·  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