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Class 84/681 - Fundamental tone detection or extraction


Subclass of Class 84 - Music
Definition: Subject matter wherein the fundamental or pitch is detected
No. of patents: 16
Last issue date: 06/03/2008


NumberTitleIssue Date
7383186Singing voice synthesizing apparatus with selective use of templates for attack and non-attack notes
In an apparatus for synthesizing a singing voice of a song, a storage section stores template data in correspondence to various expressions applicable to music notes. The template data includes first and second template data differently defining a temporal variation...
06/03/2008
7348482Discriminator for differently modulated signals, method used therein, demodulator equipped therewith, method used therein, sound reproducing apparatus and method for reproducing original music data code
A nibble stream containing MIDI music data words and synchronous nibbles and an external audio signal are selectively converted to an audio-frequency signal, which in turn is converted to a set of PCM codes for storing it in a compact disc; and the audio frequency s...
03/25/2008
6973535Digital device configuration and method
An electromechanical data storage arrangement is interfaced with a host. The interface may include a conductor that carries read and write gate signals. Another conductor carries both a servo sync mark and an error signal. The storage arrangement includes an externa...
12/06/2005
5025703Electronic stringed instrument
An electronic stringed instrument employs a plurality of sensors or monitors for instrument performance. Preferred sensors or monitors include a detector for detecting that a string of the instrument is vibrated, an apparatus for evaluating a string-vibra...
06/25/1991
5018428Electronic musical instrument in which musical tones are generated on the basis of pitches extracted from an input waveform signal
An electronic musical instrument extracts a pitch from an input waveform signal by a pitch extracting circuit, and directs a sound source circuit to generate a musical tone at the pitch based on the extracted pitch. The sound source circuit electronically...
05/28/1991
4924746Input apparatus of electronic device for extracting pitch from input waveform signal
Data representing a pitch is extracted from an input waveform signal and a musical tone having a corresponding tone pitch is generated. By chromatically designating a tone pitch, a musical tone having a tone pitch of a semitone unit is generated from a so...
05/15/1990
4757737Whistle synthesizer
A whistle synthesizer comprises a microphone, a housing, system electronics within the housing, and controls outside the housing. The player whistles into the microphone, the signals from which are processed to provide an instrument output signal suitable...
07/19/1988
4467689Chord recognition technique
A method and apparatus for inhibiting the spurious recognition of new chords in an automatic chord recognition system by permitting a new chord group or chord type to be recognized only if the performer has operated the same or a greater number of keys si...
08/28/1984
4377961Fundamental frequency extracting system
A system for extracting the fundamental frequency or pitch of complex waves such as voice, musical instruments or other audio signals. Separate channels extract the fundamental frequency component when it is present in successively wider frequency bands, ...
03/29/1983
4357852Guitar synthesizer
A guitar synthesizer comprises a guitar portion and a synthesizer portion which are electrically connected to each other. The guitar portion includes strings stretched between a nut and a bridge and pickup means for detecting a string vibration for provid...
11/09/1982
4300431Pitch extractor circuit
A pitch extractor for an electronic musical instrument generates a digital count indicative of the period of the signal whose frequency is to be extracted and processes this count to provide an analog control voltage corresponding to this frequency; the c...
11/17/1981
4280387Frequency following circuit
A plurality of a signal peak detection circuits connected in cascade for operation on a complex waveform input signal, for generating a reference signal having peaks occurring in time with the peaks of the fundamental frequency component of the input sign...
07/28/1981
4248118Harmony recognition technique application
Techniques for translating the harmony expressed by the keyboard playing of a performer into a chord type and root. Playing key pattern representations are stored in a digital memory at locations having addresses defining the corresponding chord type. A p...
02/03/1981
4117757Rectangular waveform signal reproducing circuit for electronic musical instruments
A rectangular waveform signal reproducing circuit for electronic musical instruments which is composed of a first charge-discharge circuit having a relatively small charge time constant and a relatively large discharge time constant for charging and disch...
10/03/1978
4014237Musical note detecting apparatus
Apparatus for automatically detecting the pitch of individual notes of music represented in analog form by an electrical signal. The apparatus includes an arrangement of band-pass filters, connected in parallel, for receiving the electrical signal and pas...
03/29/1977
3999456Voice keying system for a voice controlled musical instrument
A voice keying system for a voice controlled musical instrument comprising a frequency responding circuit for responding to an input signal of audio frequency and generating a control signal which corresponds to each of a plurality of frequency bands of i...
12/28/1976
 
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