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US 11,984,102 B2Granted
Sound effect generation method and information processing device
AssigneeRoland Corporation
InventorHiroaki Mori
Life of this patent
Estimating the term…
Abstract
This sound effect generation method includes: generating a sound effect with respect to a sound by using an all-pole filter having a coefficient generated on the basis of an actual measurement value of impulse response; and outputting the sound effect.
Claims20
An electronic musical instrument comprising:
- a high-order-all-pole IIR filter that outputs a sound signal which is formed on a basis of an actual measurement value of an impulse response at a measurement place selected from a plurality of impulse responses acquired at a plurality of measurement places and is obtained by adding a reverberant sound at the selected measurement place to an input sound signal,
- the high-order-all-pole IIR filter comprises an adder in which an audio signal is inputted and a plurality of taps connected in multiple stages to an output terminal of the adder,
- each of the plurality of taps includes a delay circuit and a multiplier,
- the delay circuit includes an input terminal connected to the output terminal of the adder or an output terminal of a delay circuit of a previous tap,
- the delay circuit further includes an output terminal connected to an input terminal of a delay circuit of the subsequent tap and an input terminal of the multiplier,
- the multiplier outputs a signal obtained by multiplying an output signal of the delay circuit inputted to the input terminal of the multiplier by a predetermined coefficient, and an output signal of the multiplier is inputted to the adder.
3 more elements
An information processing device comprising:
- a generation unit that generates a sound effect with respect to a sound by using a high-order-all-pole IIR filter having a plurality of coefficients generated on a basis of an actual measurement value of an impulse response;
- and
- an output unit that outputs the sound effect,
- wherein the high-order-all-pole IIR filter comprises an adder in which an audio signal is inputted and a plurality of taps connected in multiple stages to an output terminal of the adder,
- each of the plurality of taps includes a delay circuit and a multiplier,
- the delay circuit includes an input terminal connected to the output terminal of the adder or an output terminal of a delay circuit of a previous tap,
- the delay circuit further includes an output terminal connected to an input terminal of a delay circuit of the subsequent tap and an input terminal of the multiplier,
- the multiplier outputs a signal obtained by multiplying an output signal of the delay circuit inputted to the input terminal of the multiplier by a predetermined coefficient, and an output signal of the multiplier is inputted to the adder.
5 more elements
A sound effect generation method comprising:
- generating a sound effect with respect to a sound by using a high-order-all-pole IIR filter having a plurality of coefficients generated on a basis of an actual measurement value of an impulse response;
- and
- outputting the sound effect,
- wherein the high-order-all-pole IIR filter comprises an adder in which an audio signal is inputted and a plurality of taps connected in multiple stages to an output terminal of the adder,
- each of the plurality of taps includes a delay circuit and a multiplier,
- the delay circuit includes an input terminal connected to the output terminal of the adder or an output terminal of a delay circuit of a previous tap,
- the delay circuit further includes an output terminal connected to an input terminal of a delay circuit of the subsequent tap and an input terminal of the multiplier,
- the multiplier outputs a signal obtained by multiplying an output signal of the delay circuit inputted to the input terminal of the multiplier by a predetermined coefficient, and an output signal of the multiplier is inputted to the adder.
5 more elements
Dependencies are inferred from the claim text.