Signal processing apparatus and method
AssigneeYamaha Corporation
InventorsKotaro Terada, Shunichi Kamiya
Life of this patent
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Abstract
Reference gain values Ga1, Gb1 and Gc1 are set for respective EQ points A, B and C of a plurality of frequency bands in EQ CURVE 1 currently set in an EQ module. In response to an operation of an operator, an intensity parameter value, which is a multiplier for the reference gain values Ga1, Gb1 and Gc1, is changed, so that the reference gain values Ga1, Gb1 and Gc1 are changed in a collective fashion. In EQ CURVE 2 having been changed from EQ CURVE 1, the intensity parameter value exceeds “1 (100%)” and actual gain values of the EQ points A′, B′ and C′ of the frequency bands are Ga2, Gb2 and Gc2, so that EQ CURVE 2 assumes emphasized frequency characteristics.
Claims13
A signal processing apparatus comprising:
- a storage device;
- and
- a processor configured to execute computer executable instructions recorded on the storage device, the computer executable instructions including instructions, that when executed by the processor, cause the signal processing apparatus to:
- receive a single magnification input for adjusting an intensity of a reference equalizer curve, the single magnification input to be multiplied with each of gain values of frequencies corresponding to a plurality of control points in the reference equalizer curve;
- determine a given equalizer curve by collectively adjusting the intensity of the plurality of control points in the reference equalizer curve by multiplying the received single magnification input with each of the gain values of the frequencies corresponding to the plurality of control points in the reference equalizer curve;
- and
- perform signal processing on an audio signal according to a frequency characteristic indicated by the given equalizer curve, wherein a gain characteristic, on a frequency axis, of the audio signal is adjusted based on the given equalizer curve.
A method for processing an audio signal using a signal processing apparatus, said method comprising:
- receiving a single magnification input for adjusting an intensity of a reference equalizer curve, the single magnification input to be multiplied with each of gain values of frequencies corresponding to a plurality of control points in the reference equalizer curve;
- determining a given equalizer curve by collectively adjusting the intensity of the plurality of control points in the reference equalizer curve by multiplying the received single magnification input with each of the gain values of the frequencies corresponding to the plurality of control points in the reference equalizer curve;
- and
- performing signal processing on the audio signal according to a frequency characteristic indicated by the given equalizer curve, wherein a gain characteristic, on a frequency axis, of the audio signal is adjusted based on the given equalizer curve.
A non-transitory, computer-readable storage medium storing a program executable by a processor to perform a method for processing an audio signal using a signal processing apparatus, said method comprising:
- receiving a single magnification input for adjusting an intensity of a reference equalizer curve, the single magnification input to be multiplied with each of gain values of frequencies corresponding to a plurality of control points in the reference equalizer curve;
- determining a given equalizer curve by collectively adjusting the intensity of the plurality of control points in the reference equalizer curve by multiplying the received single magnification input with each of the gain values of the frequencies corresponding to the plurality of control points in the reference equalizer curve;
- and
- performing signal processing on the audio signal according to a frequency characteristic indicated by the given equalizer curve, wherein a gain characteristic, on a frequency axis, of the audio signal is adjusted based on the given equalizer curve.
An equalizer processing apparatus having set therein an equalizer curve for use in signal processing, the equalizer processing apparatus comprising:
- a storage device;
- and
- a processor configured to execute computer executable instructions recorded on the storage device, the computer executable instructions including instructions, that when executed by the processor, cause the equalizer processing apparatus to:
- generate a new equalizer curve for use in signal processing on an audio signal according to a frequency characteristic indicated by the new equalizer curve, wherein a gain characteristic, on a frequency axis, of the audio signal is adjustable based on the new equalizer curve, the new equalizer curve being generated by multiplying each of values of a plurality of control points in the equalizer curve set in said equalizer processing apparatus by a single, adjustable magnification input.
Dependencies are inferred from the claim text.