Patent ID: 9179238
Filing Date: 2015-11-03
Classification: H04R,H04S

Abstract:
1. A method for automatically adjusting an environmental frequency response, comprising: (a) installing an application software to a communication device; (b) displaying an application interface of the application software on a display screen of the communication device, and pressing an Auto EQ start button in the application interface of the application software; (c) connecting a Bluetooth/WiFi module of the communication device to a built-in Bluetooth/WiFi module of a stereo via a wireless transmission; (d) transmitting a control signal from the Bluetooth/WiFi module of the communication device to a micro-controller of the stereo, and set a whole equalizer integrated circuit of the stereo to a default value of 0 db by the micro-controller, and disabling an adjusting function of the whole equalizer integrated circuit; (e) outputting a constant audio frequency of a sine wave audio frequency signal of 1 KHz by the application software through the Bluetooth/WiFi module of the communication device, outputting the sine wave audio frequency signal from a speaker after the Bluetooth/WiFi module of the stereo has received the sine wave audio frequency signal, and then receiving the sine wave audio frequency signal of 1 KHz played by the stereo from a built-in microphone of the communication device, wherein the micro-controller of the stereo adjusts sound volume until a captured audio frequency gain is equal to an appropriate reference gain value; (f) outputting the sine wave audio frequency signal of 20 Hz˜20 KHz by the application software after the communication device has obtained the appropriate reference gain value of 1 KHz, transmitting the sine wave audio frequency signal to the Bluetooth/WiFi module of the stereo through the Bluetooth/WiFi module of the communication device, and outputting the constant audio frequency from the stereo; (g) receiving the sine wave audio frequency signal played by the stereo from the microphone of the communication device while playing the sine wave audio frequency signal of 20 Hz˜20 KHz, comparing a gain value obtained from a current outputted frequency with the appropriate reference gain value, and further transmitting a control signal to the micro-controller of the stereo to adjust a current audio frequency gain to comply with the appropriate reference gain value; and (h) transmitting the control signal to the micro-controller of the stereo to adjust the sound volume to a default value and save current settings of the whole equalizer integrated circuit, to achieve approaching an ideal frequency response curve after the application software has completed making adjustment.