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US 5,157,215 AGranted
Electronic musical instrument for modulating musical tone signal with voice
AssigneeCasio Computer Co., Ltd.
InventorsTetsuichi Nakae, Takashi Matsuda
Life of this patent
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Abstract
An electrical musical instrument includes a scale designator for sequentially and automatically designating a scale on the basis of prestored data of a music piece, and a musical tone signal generator for outputting a musical tone signal including a harmonic frequency on the basis of the scale designated by said scale designator or as a fundamental frequency. A voice detector detects an external voice and the detected voice is divided by a modulator into voice signals in a plurality of frequency ranges. The musical tone signal is modulated in units of corresponding frequency ranges on the basis of the voice signals divided into the plurality of frequency ranges.
Claims34
An automatic performance apparatus comprising:
- note designation means for sequentially and automatically designating a note on the basis of prestored data of a music piece, without any external operation;
- musical tone signal generation means for sequentially outputting a musical tone signal including harmonic frequency components on the basis of the note designated by said note designation means as a fundamental frequency;
- external voice detection means for detecting an external voice and for producing a voice signal;
- and
- modulation means for dividing the voice signal received from said external voice detection means into voice signals in a plurality of frequency ranges, and for modulating the musical tone signal in units of corresponding frequency ranges on the basis of the voice signals divided in top the plurality of frequency ranges, thereby modulating at least timbre of the musical tone signal to be outputted on the basis of the voice signals divided into the plurality of frequency ranges.
2 more elements
An automatic performance apparatus comprising:
- musical tone signal generation means for sequentially and automatically outputting a musical tone signal on the basis of restored data of a music piece, without any external operation;
- external voice detection means for detecting an external voice and for producing a voice signal;
- and
- modulation means for modulating at least timbre of the musical tone signal on the basis of the voice signal from said external voice detection means, and for outputting the modulated signal having at least said timbre modulated on the basis of said voice signal from said external voice detection means.
1 more element
A musical tone generating apparatus comprising:
- note designation means for designating a note;
- musical tone signal generation means for simultaneously outputting a first musical tone signal including harmonic frequency components in a wide frequency range and a second musical tone signal including harmonic frequency components in a specific frequency range on the basis of the note designated by said note designation means as a fundamental frequency;
- external voice detection mans for detecting an external voice;
- first modulation means for dividing the voice signal from said external voice detection means into voice signals in units of a plurality of frequency ranges, for modulating the first musical tone signal in units of the corresponding frequency ranges on the basis of the divided voice signals in the plurality of frequency ranges, and for outputting the modulated signals;
- second modulation means for modulating the second musical tone signal output form said musical tone signal generation means on the basis of the voice signal from said external voice detection means;
- and
- tone generation means for generating a tone on the basis of a signal obtained by mixing the musical tone signals modulated by said first and second modulation means.
4 more elements
A musical instrument comprising:
- note designation means for designating a note;
- musical tone signal generation means for simultaneously outputting a first musical tone signal including harmonic frequency components in a wide frequency range and a second musical tone signal including harmonic frequency components in a specific frequency range on the basis of the note designated by said note designation means as a fundamental frequency;
- first mixer means for mixing the first and second musical tone signals, and for outputting the mixed signal;
- external voice detection means for detecting an external voice;
- modulation means for dividing the voice signal from said external voice detection means into vice signals in units of a plurality of frequency ranges, for modulating the musical tone signal mixed by said first mixer means in units of the corresponding frequency ranges on the basis of the divided voice signals in the plurality of frequency ranges, and for outputting the modulated signals;
- and
- tone generation means for generating a tone on the basis of the musical tone signal modulated by said modulation means.
4 more elements
An electronic musical apparatus comprising:
- first digital filtering processing means for dividing a digital musical tone signal into musical tone signals which are frequency-range limited to a plurality of different frequency ranges;
- second digital filtering processing means for dividing a digital voice signal into voice signals which are frequency-range limited to a plurality of different frequency ranges;
- envelope extraction processing means for extracting envelope signals from the frequency-range limited voice signals obtained by said second digital filtering processing means;
- modulation processing means for modulating the frequency-range limited musical tone signals obtained by said first digital filtering processing means according to the envelope signals obtained by said envelope extraction processing means;
- and
- accumulation processing means for accumulating the modulated signals obtained by said modulation processing means, and for outputting an accumulated signal as a digital output musical tone signal.
3 more elements
A musical tone generating apparatus comprising:
- musical tone signal generation means for generating a digital musical tone signal on the basis of a performance operation by a user;
- voice signal generation means for generating a digital voice signal on the basis of a voice produced by a user;
- digital signal processing means for sequentially executing first digital filtering processing for dividing the digital musical tone signal into musical tone signals which are frequency-range limited to a plurality of different frequency ranges, second digital filtering processing for dividing the digital voice signal into voice signals which are frequency-range limited to a plurality of different frequency ranges, envelope extraction processing for extracting envelope signals from the frequency-range limited voice signals obtained by the second digital filtering processing, modulation processing for modulating the frequency-range limited musical tone signals obtained by the first digital filtering processing according to the envelope signals obtained by the envelope extraction processing, and accumulation processing for accumulating the modulated signals obtained by the modulation processing and outputting an accumulated signal as a digital output musical tone signal by time-divisional digital signal processing;
- and
- sound producing means for converting the digital output musical tone signal output from said digital signal processing means into an analog output musical tone signal, and for producing a corresponding sound.
2 more elements
Dependencies are inferred from the claim text.