US 11,670,272 B2
Amplifier for music signal and method of outputting waveform of music signal
Mitsuo Shida, Shizuoka (JP); Yoshinobu Morimoto, Shizuoka (JP); and Kosuke Takada, Shizuoka (JP)
Assigned to Roland Corporation, Shizuoka (JP)
Filed by Roland Corporation, Shizuoka (JP)
Filed on Dec. 22, 2020, as Appl. No. 17/129,936.
Claims priority of application No. JP2019-239930 (JP), filed on Dec. 27, 2019.
Prior Publication US 2021/0201879 A1, Jul. 1, 2021
Int. Cl. G10H 3/18 (2006.01); G10H 1/00 (2006.01); H03F 1/32 (2006.01)
CPC G10H 3/187 (2013.01) [G10H 1/0091 (2013.01); H03F 1/327 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An amplifier comprising:
a first power supply;
a second power supply;
an input terminal which receives a music signal;
an amplifying circuit which amplifies the music signal using the power supply; and
a circuit which is connected in series between an output end of the amplifying circuit and a speaker load, the circuit comprises:
an inductor having one end connected to the output end of the amplifying circuit and another end connected to the speaker load;
a first diode having an anode connected to the other end of the inductor;
a second diode having a cathode connected to the other end of the inductor;
a first capacitor having one end connected to a cathode of the first diode and another end connected to the first power supply;
a second capacitor having one end connected to an anode of the second diode and another end connected to the second power supply; and
a resistor having one end connected to the cathode of the first diode and another end connected to the anode of the second diode.