Method and apparatus for outputting sound source based on amplification power control according to volume level

A method for outputting a sound source by a sound source output apparatus, the method comprising:

• a volume level sensing step of sensing a volume level by sensing a change in the volume level according to a manipulation or an input of a user;
• a control step of generating a voltage control signal by determining an amplification power voltage for an amplification operation based on the sensed volume level;
• a power applying step of applying the adjusted amplification power voltage based on the voltage control signal;
• an audio signal generating step of generating an audio signal by performing an amplifying operation of the sound signal which is converted based on the amplification power voltage;
• and
• an audio output step of outputting the audio signal,
• wherein the control step includes:
• a voltage determining step of determining the amplification power voltage for the amplifying operation by comparing the sensed volume level with a predetermined volume table;
• and
• a voltage control signal generating step of generating the voltage control signal for power source control with the determined amplification power voltage;
• and
• a sound source analysis step of analyzing the sound source signal to extract sound source analysis information including at least one or both of genre information of the sound source signal and sound wave analysis information on a sound wave of the sound source signal,
• wherein the voltage determining step, the amplification power voltage is determined by further considering the sound source analysis information,
• wherein, in the voltage determining step, the amplification power voltage is determined by comparing a predicted amplification power voltage with a reference amplification power voltage, and then a voltage adjustment for the genre information and a voltage adjustment for the sound wave analysis information are sequentially performed to finally determine the amplification power voltage.