Electronic device and equalizer adjustment method thereof for adjusting gain settings of an equalizer according to the volume of the output signal

1. An equalizer adjustment method for adjusting gain settings of an equalizer according to a volume of an output signal, applied to an electronic device, the electronic device comprising the equalizer, a gain value setting module, a storage module, and an equalizer adjustment module, the equalizer adjustment method for adjusting gain settings of the equalizer according to the volume of the output signal comprising the following steps:

setting a volume gain value table through the gain value setting module, the volume gain value table comprising a plurality of volume values, which are a first volume value to an Nth volume value, the volume incrementally increasing from the first volume value to the Nth volume value, each of the plurality of volume values comprising a set of correction parameters, the set of correction parameters comprising a plurality of compensation gain values corresponding to a plurality of target frequencies, respectively; wherein when the lower the volume value is, the more the volume of the sound at a low frequency is increased and the more the volume of the sound at a high frequency is decreased;

storing the volume gain value table in the storage module;

obtaining the volume of the output signal;

loading the volume gain value table according to the volume of the output signal to obtain the corresponding set of correction parameters; and

adjusting gain value settings of the equalizer for different frequencies of sound according to the set of correction parameters through the equalizer adjustment module.

2. The equalizer adjustment method for adjusting gain settings of the equalizer according to the volume of the output signal as claimed in claim 1 further comprising the following step:

sensing the volume of the output signal by detecting a current volume level of the electronic device.

3. The equalizer adjustment method for adjusting gain settings of the equalizer according to the volume of the output signal as claimed in claim 2 further comprising the following steps:

setting the set of correction parameters of a maximum volume value, a minimum volume value, and an intermediate volume value; and

calculating the set of correction parameters of the rest of the volume values by using an interpolation.

4. The equalizer adjustment method for adjusting gain settings of the equalizer according to the volume of the output signal as claimed in claim 3 , wherein the plurality of compensation gain values are between −10 and 10.

5. The equalizer adjustment method for adjusting gain settings of the equalizer according to the volume of the output signal as claimed in claim 4 , wherein when the plurality of target frequencies are equal to or higher than 10 kHz, the plurality of compensation gain values corresponding to the plurality of target frequencies are between −10 and 0.

6. The equalizer adjustment method for adjusting gain settings of the equalizer according to the volume of the output signal as claimed in claim 4 , wherein when the plurality of target frequencies are equal to or lower than 100 Hz, the plurality of compensation gain values corresponding to the plurality of target frequencies are between 0 and 10.

7. An electronic device comprising:

an equalizer;

a gain value setting module used for setting a volume gain value table, the volume gain value table comprising a plurality of volume values, which are a first volume value to an Nth volume value, the volume incrementally increasing from the first volume value to the Nth volume value, each of the plurality of volume values comprising a set of correction parameters, the set of correction parameters comprising a plurality of compensation gain values corresponding to a plurality of target frequencies, respectively; wherein when the lower the volume value is, the more the volume of the sound at a low frequency is increased and the more the volume of the sound at a high frequency is decreased;

a storage module electrically connected to the gain value setting module and used for storing the volume gain value table; and

an equalizer adjustment module electrically connected to the storage module and the equalizer, the equalizer adjustment module comprising:

a volume detection unit used for obtaining a volume of an output signal;

a parameter lookup unit used for obtaining the set of correction parameters corresponding to the volume of the output signal; and

a parameter setting unit used for adjusting gain value settings of the equalizer for different frequencies of sound according to the set of correction parameters.

8. The electronic device as claimed in claim 7 , wherein the volume detection unit obtains the volume of the output signal by detecting a current volume level of the electronic device.

9. The electronic device as claimed in claim 8 , wherein the gain value setting module is used for setting the set of correction parameters of a maximum volume value, a minimum volume value, and an intermediate volume value and calculating the set of correction parameters of the rest of the volume values by using an interpolation.

10. The electronic device as claimed in claim 9 , wherein the plurality of compensation gain values are between −10 and 10.

11. The electronic device as claimed in claim 10 , wherein when the plurality of target frequencies are equal to or higher than 10 kHz, and the plurality of compensation gain values corresponding to the plurality of target frequencies are between −10 and 0.

12. The electronic device as claimed in claim 10 , wherein when the plurality of target frequencies are equal to or lower than 100 Hz, the plurality of compensation gain values corresponding to the plurality of target frequencies are between 0 and 10.

13. The electronic device as claimed in claim 7 , wherein the gain value setting module is used for allowing a user to set the volume gain value table.