Audio processing device, amplifier device, and audio processing method
AssigneeRoland Corporation
InventorsToshiyuki Ochi, Yoshinobu Morimoto
Life of this patent
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Abstract
An audio processing device includes: a first low-pass filter (LPF) to which an audio signal is input; a circuit to which the audio signal is input, including a first high-pass filter (HPF) and a preamplifier; a second HPF to which the audio signal is input; a second LPF to which an output signal of the circuit is input; an extractor, extracting each of an output signal of the first LPF, an output signal of the second HPF, and an output signal of the second LPF at a predetermined ratio; and a mixer, mixing the output signal of the first LPF, the output signal of the second HPF, and the output signal of the second LPF that are extracted.
Claims16
An audio processing device, comprising:
- a first low-pass filter to which an audio signal is input;
- a circuit to which the audio signal is input, comprising a first high-pass filter and a preamplifier;
- a second high-pass filter to which the audio signal is input;
- a second low-pass filter to which an output signal of the circuit is input;
- an extractor, extracting each of an output signal of the first low-pass filter, an output signal of the second high-pass filter, and an output signal of the second low-pass filter at a predetermined ratio;
- a mixer, mixing the output signal of the first low-pass filter, the output signal of the second high-pass filter, and the output signal of the second low-pass filter that are extracted by the extractor;
- and
- a first effect imparter, inputting the audio signal obtained by imparting an effect to an input audio signal to each of the first low-pass filter and the second high-pass filter.
An amplifier device, comprising:
- an audio processing device, processing an audio signal inputted from a musical instrument;
- and
- a power amplifier, amplifying a signal outputted from the audio processing device,
- wherein the audio processing device comprises:
- a first low-pass filter to which an audio signal is input;
- a circuit to which the audio signal is input, comprising a first high-pass filter and a preamplifier;
- a second high-pass filter to which the audio signal is input;
- a second low-pass filter to which an output signal of the circuit is input;
- an extractor, extracting each of an output signal of the first low-pass filter, an output signal of the second high-pass filter, and an output signal of the second low-pass filter at a predetermined ratio;
- a mixer, mixing the output signal of the first low-pass filter, the output signal of the second high-pass filter, and the output signal of the second low-pass filter that are extracted by the extractor;
- and
- a first effect imparter, inputting the audio signal obtained by imparting an effect to an input audio signal to each of the first low-pass filter and the second high-pass filter.
An audio processing method comprising, by an audio processing device:
- inputting an audio signal to a first low-pass filter;
- inputting the audio signal to a circuit that comprises a first high-pass filter and a preamplifier;
- inputting the audio signal to a second high-pass filter;
- inputting an output signal of the circuit to a second low-pass filter;
- extracting each of an output signal of the first low-pass filter, an output signal of the second high-pass filter, and an output signal of the second low-pass filter at a predetermined ratio;
- and
- mixing the output signal of the first low-pass filter, the output signal of the second high-pass filter, and the output signal of the second low-pass filter that are extracted,
- inputting the audio signal obtained by imparting an effect to an input audio signal to each of the first low-pass filter and the second high-pass filter.
Dependencies are inferred from the claim text.