Patent ID: 9006552
Filing Date: 2015-04-14
Classification: G10H

Abstract:
1. An effect device comprising: an input device to which a tone signal based on vibration of strings of a stringed instrument is input; a first filter device comprising a band pass filter that passes the tone signal input from the input device; a pitch detection device that detects a pitch of the tone signal input from the first filter device and/or a pitch of the tone signal to be input to the first filter device; a filter control table providing parameters for the filter device for different frequency bands; a setting device that sets the first filter device with the parameters in the filter control table for the frequency band to which the detected pitch belongs, wherein the set parameters cause the first filter device to produce the tone signal for the frequency band to which the detected pitch belongs with frequency characteristics suitable for feedback performance, wherein the parameter set by the setting device includes a center frequency, a Q value comprising a passband width, and a gain of the filter device, wherein when the pitch detected by the pitch detection device belongs to a frequency band of a predetermined mid-range, the setting device sets, at the first filter device, the center frequency to a frequency of a harmonic based on the pitch detected by the pitch detection device and the gain to a predetermined value, and sets, at a second filter device, the center frequency to a pitch detected by the pitch detection device, and the gain to a value smaller than the predetermined value; an output device that outputs the tone signal output from the first and second filter devices outside; a level detection device that detects a level of the tone signal output from the first and second filter devices and/or a level of the tone signal to be input in the first filter device; and a level control device that controls the level of the tone signal output outside from the output device to have a level corresponding to the level detected by the level detection device.