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![[Search a list of Patent Appplications for class 84]](../as.gif) Class 84 | MUSIC |
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![[List of Patents for class 84 subclass 1]](../ps.gif) | 1 | INSTRUMENTS |
| | 600 |  Electrical musical tone generation |
| | 601 |  Data storage |
| | 602 |  Digital memory circuit (e.g., RAM, ROM, etc.) |
| | 603 |  Sampling (e.g., with A/D conversion) |
| | 604 | Waveform memory |
| | 608 | Fourier coefficient memory |
| | 609 | Note sequence |
| | 615 | Selecting circuits |
| | 616 |  Fundamental tone detection or extraction |
| | 617 | Multiplexing or scanning |
| | 618 | Priority or preference circuits |
| | 619 | Transposition |
| | 620 | Stops |
| | 621 | Noise reduction (e.g., error prevention, etc.) |
| | 622 | Tone synthesis or timbre control |
| | 626 | Expression or special effects (e.g., force or velocity responsive, etc.) |
| | 627 | Envelope shaping (i.e., attack, decay, sustain, or release) |
| | 628 | Portamento or glissando |
| | 629 | Vibrato or tremolo |
| | 630 | Reverberation |
| | 631 | Chorus, ensemble, or celeste |
| | 632 | Chiff or percussive transients |
| | 633 | Loudness control |
| | 634 | Accompaniment |
| | 639 | Photoelectric |
| | 641 | Magnetic |
| | 643 | Capacitive |
| | 644 | Constructional details |
| | 645 | MIDI (musical instrument digital interface) |
| | 646 | Fret control |
| | 647 | Digital combinational circuit |
| | 648 | With frequency multiplication or division |
| | 649 | Note sequence |
| | 653 | Selecting circuits |
| | 654 | Fundamental tone detection or extraction |
| | 655 | Multiplexing or scanning |
| | 656 | Priority or preference circuits |
| | 657 | Transposition |
| | 658 | Force or velocity responsive |
| | 659 | Tone synthesis or timbre control |
| | 662 | Expression or special effects |
| | 663 | Envelope shaping (i.e., attack, decay, sustain, or release) |
| | 664 | Chorus, ensemble, or celeste |
| | 665 | Loudness control |
| | 666 | Accompaniment |
| | 670 | Constructional details |
| | 671 | Electric analog oscillators |
| | 672 | Variable frequency |
| | 675 | With frequency multiplication or division |
| | 678 | Selecting circuits |
| | 679 | With transistor |
| | 680 | With space discharging means |
| | 681 | Fundamental tone detection or extraction |
| | 682 | Multiplexing or scanning |
| | 683 | Noise reduction (e.g., error prevention, etc.) |
| | 684 | Priority or preference circuits |
| | 685 | Transposition |
| | 686 | Stops |
| | 687 | Force or velocity responsive |
| | 691 | Noise reduction (e.g., error prevention, etc.) |
| | 692 | Tone synthesis or timbre control |
| | 701 | Expression or special effects |
