TWI520534B - Device and method of adjusting volume according to the environment - Google Patents

Description

Device and method for adjusting volume according to environment

The present invention relates to an apparatus and method for adjusting volume, and more particularly to an apparatus and method for adjusting volume according to an environment.

In portable electronic devices that generally have a sound output function, for example, a mobile phone, a personal mobile assistant (PDA), a notebook computer, a tablet, etc., when the user is noisy When you answer a call, you often set the output of the sound volume manually by not knowing the other party's voice. As the volume of the environmental background changes, the output volume of the portable electronic device must be manually adjusted by the user to be able to clearly hear the output of the electronic device under different environmental conditions. As such, it will cause inconvenience to the user.

In the same situation, viewing audio and video or playing music using portable electronic devices is also affected by the external environment. For example, in the nights of night, in public gatherings of many people, or on high-speed moving trains, different volume adjustment settings may be required to match the volume of the user's hearing. Therefore, when the user uses the broadcasting device and the environment in which the user operates, it is necessary to adjust the volume of the device in a timely manner.

Therefore, it can be automatically adjusted to match the volume of the user's habits. There is no need for the user to manually control the manual increase or decrease of the volume when using the device, which is the current goal.

The present invention provides an apparatus and method for adjusting volume according to an environment.

The invention provides a device for adjusting the volume according to the environment, comprising: a receiving unit, a signal analyzing unit, a filtering unit, an environment analyzing unit, an adjusting unit, a control unit, a playing unit, a storage unit and a timing unit. And a judgment unit. The receiving unit is configured to receive an audio signal. The signal analysis unit is coupled to the receiving unit for analyzing the sound signal and obtaining at least one signal source. The filtering unit is coupled to the signal analyzing unit, and filters the signal source in the sound signal to obtain an ambient sound signal. The environment analysis unit is coupled to the filtering unit, and obtains a volume control signal corresponding to the ambient sound signal according to the ambient sound signal and one of the storage unit audio data. The adjustment unit is coupled to the environment analysis unit to determine whether a user preference adjustment signal is received. Finally, the control unit is coupled to the adjustment unit. When the adjustment unit does not receive the user preference adjustment signal, the output volume of one of the output audio signals of the device is adjusted according to the volume control signal.

The invention provides a method for adjusting the volume according to the environment, which is used in a device, comprising: receiving an audio signal; analyzing the sound signal and obtaining at least one signal source; filtering the signal source in the sound signal to obtain an ambient sound signal; Obtaining a volume control signal corresponding to the ambient sound signal according to the ambient sound signal and the audio data of one of the storage units; Whether a user preference adjustment signal is received; and when the user preference adjustment signal is not received, adjusting an output volume of one of the output audio signals of the device according to the volume control signal.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

100‧‧‧ device

105‧‧‧ Receiving unit

110‧‧‧Signal Analysis Unit

115‧‧‧Filter unit

120‧‧‧Environmental Analysis Unit

125‧‧‧Adjustment unit

130‧‧‧Control unit

135‧‧‧Play unit

140‧‧‧ storage unit

145‧‧‧Time unit

150‧‧‧judging unit

200‧‧‧flow chart

S202, S204, S206, S208, S210, S212, S214, S216, S218‧‧ steps

1 is a schematic diagram showing an apparatus for adjusting a volume according to an environment according to an embodiment of the invention.

2 is a flow chart showing a method for adjusting a volume according to an environment according to an embodiment of the invention.

Figure 3 is a diagram showing a linear regression analysis according to an embodiment of the present invention.

In order to make the objects, features, and advantages of the present invention more comprehensible, the preferred embodiments of the invention will be described in detail below with reference to the accompanying drawings Figures 1 through 3. The present specification provides various embodiments to illustrate the technical features of various embodiments of the present invention. The arrangement of the various elements in the embodiments is for illustrative purposes and is not intended to limit the invention. In addition, the overlapping portions of the drawings in the embodiments are for the purpose of simplifying the description, and do not mean the correlation between the different embodiments.

1 is a schematic diagram showing an apparatus 100 for adjusting a volume according to an environment according to an embodiment of the invention. The device 100 mainly includes a receiving unit 105, a signal analyzing unit 110, a filtering unit 115, and an environment analyzing unit. An adjustment unit 125, a control unit 130, a playback unit 135, a storage unit 140, a timing unit 145, and a determination unit 150.

The receiving unit 105 is configured to receive an audio signal, which can be a device of a microphone sensor, and can detect and capture changes of external sounds at any time. The voice signal includes all the sounds received by the device 100 at that time. For example, when a user makes a call, the voice signal may include the voice of the call played by the device 100 and the ambient sound at the time. As another example, when a user uses the device 100 to play MP3 music or media video, the audio signal may include the MP3 music played by the device 100 or the sound of the media audio and the ambient sound at that time.

The signal analyzing unit 110 is coupled to the receiving unit 105 for analyzing the sound signal and obtaining at least one signal source. The signal analyzing unit 110 analyzes the sound signal according to an independent component analysis. The independent component analysis method can be applied to blind signal separation in a mixed environment and analyze the signal source included in the sound signal. For example, when a user makes a call, the voice signal may include the voice of the call played by the device 100 and the ambient sound at that time, and the source of the voice of the call may be analyzed by using an independent component analysis method.

The filtering unit 115 is coupled to the signal analyzing unit 110 for filtering at least one signal source in the audio signal to obtain an ambient sound signal, wherein the ambient sound signal may refer to the intensity value (dB) of the ambient sound signal received by the device 110. .

The environment analyzing unit 120 is coupled to the filtering unit 115 for obtaining and synchronizing according to the ambient sound signal and the audio data stored in the storage unit 140. One of the volume control signals corresponding to the ambient sound signal. In another embodiment, the environment analysis unit 120 may analyze the ambient sound signal by using a linear regression to add or modify the audio data.

The adjustment unit 125 is coupled to the environment analysis unit 120 for determining whether a user preference adjustment signal input by the user is received. The control unit 130 is coupled to the adjustment unit 125 for adjusting the output volume of one of the output audio signals of the device 100. When the adjusting unit 125 does not receive the user preference adjustment signal input by the user, the control unit 130 adjusts the output volume of the device 100 according to the volume control signal corresponding to the ambient sound signal obtained by the environment analyzing unit 120. . When the adjustment unit 125 receives the user preference adjustment signal, the control unit 130 adjusts the output volume of the signal adjustment device 100 according to the user preference.

The playing unit 135 is coupled to the control unit 130 for playing an output audio signal. The timing unit 145 is coupled to the receiving unit 105 for determining whether a timing time exceeds a preset time. The determining unit 150 is coupled to the timing unit 145 and the playing unit 135 for determining whether the playing unit 135 continuously plays the output audio signal. It is to be noted that, because the environment in which the user is located may change at any time, when the timing unit 145 determines that the timing time exceeds the preset time and the determining unit 150 determines that the playback unit 135 continues to play the output audio signal (ie, the user continues to talk or When the audio and video media is continuously played, the determining unit 150 transmits the consistent energy signal to the receiving unit 105, so that the receiving unit 105 can re-receive the sound signal and continuously update the external sound condition of the user.

The storage unit 140 is coupled to the signal analysis unit 110, the filtering unit 115, the environment analysis unit 120, and the adjustment unit 125 for storing an audio message. data. The audio data may include at least one signal source obtained after the signal analysis unit 115 analyzes the audio signal, and the ambient sound signal obtained by the filtering unit 115 after filtering the signal source, and the environmental analysis unit 120 calculates the corresponding environment sound signal. The volume control signal and adjustment unit 125 receives the user preference adjustment signal input by the user. Table 1 shows the audio data stored by the storage unit 140.

As shown in Table 1, as an example, a user receives an audio signal through the receiving unit 105 and analyzes the independent component of the signal analyzing unit 110 to analyze at least one signal source S _i . Then, the filtering unit 115 filters the signal source S _i and records the ambient sound signal X. The environment analysis unit 120 analyzes the ambient sound signal X by linear regression, and calculates a volume output value Y, which is the set value required by the user. Finally, the Y _max is calculated in the historical audio data of the storage unit 140 to calculate the percentage of the output volume of the computing device 100, Y _i /Y _max, to complete the adjustment requirement. It should be noted that the number of the plurality of signal sources and the like described above is not limited to the contents of the illustration and the description of the present invention.

2 is a flow chart 200 showing a method for adjusting volume according to an environment according to an embodiment of the invention, which method can be used in a device. First, in step S202, an audio signal is received. In step S204, the audio signal is analyzed and at least one signal source is obtained. Next, in step S206, the signal source is filtered in the audio signal to obtain an ambient sound signal. In step S208, a volume control signal corresponding to the ambient sound signal is obtained according to the ambient sound signal and one of the storage unit audio data. Next, in step S210, it is determined whether a user preference adjustment signal is received. If it is determined that the user preference adjustment signal is received (YES in step S210), in step S212, the output volume of an output audio signal of the signal adjustment device is adjusted according to the user preference. If it is determined that the user preference adjustment signal has not been received (NO in step S210), in step S214, the output volume of the device is adjusted according to the volume control signal. Next, in step S216, it is determined whether a timing time exceeds a predetermined time. If the counted time has not exceeded the preset time (NO in step S216), the process returns to step S216 to continue counting. If the counted time exceeds the preset time (YES in step S216), it is determined in step S218 whether or not the output sound signal is continuously played. If it is determined that the output audio signal is continuously played (YES in step S218), the process returns to step S202 to re-receive the audio signal. If it is judged that the output audio signal is not played (NO in step S218), that is, the playback ends, the flow ends.

Fig. 3 is a diagram showing a linear regression analysis according to an embodiment of the present invention, and referring to Table 1. The analysis of the sound signal is performed by using the aforementioned independent component analysis method, and the linear regression analysis of the statistical method is used to estimate the output volume of the output sound signal of the device. As shown in Fig. 3, the horizontal axis is the ambient sound signal X _i through which the signal source is removed, and the vertical axis is the computing device to adjust the output volume Y _i . If the user inputs the user preference adjustment signal according to the environment, the device will record the user preference adjustment output volume Y _i into the storage unit and add the calculation. As shown in Figure 3, the dot in the figure is the output volume that the user wants to adjust in different ambient sound signals. The straight line in the figure is the user's operation behavior calculated by linear regression. As the number of user operations on the device increases, the number of matrices calculated is also greater, and the results obtained by linear regression analysis are then closer to the operational behavior of the device user. If the user does not input the user preference adjustment signal according to the environment, the device automatically compares the audio data in the storage unit according to the ambient sound signal, and calculates the corresponding volume output value Y _i through linear regression analysis. Then, based on the calculated maximum value of the sound output (Y _max ), the maximum value corresponding to the volume output of the device is adjusted as the ratio of the output volume equal ratio (Y _i /Y _max ).

Therefore, by the apparatus and method for adjusting the volume according to the environment of the present invention, a technique for automatically adjusting the volume of the device as the environment changes can be implemented, and the user behavior pattern is recorded as an adjustment standard to predict an output value that meets the user's ideal value. Moreover, the adjustment evaluation according to the training model of the storage unit can reduce the inconvenience caused by the manual control device increasing the volume or reducing the volume when the device is used.

Although the technical content of the present invention has been disclosed in the preferred embodiments, However, it is not intended to limit the invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the invention are intended to be included in the scope of the invention. The scope defined in the patent application is subject to change.

100‧‧‧ device

105‧‧‧ Receiving unit

110‧‧‧Signal Analysis Unit

115‧‧‧Filter unit

120‧‧‧Environmental Analysis Unit

125‧‧‧Adjustment unit

130‧‧‧Control unit

135‧‧‧Play unit

140‧‧‧ storage unit

145‧‧‧Time unit

150‧‧‧judging unit

Claims (8)

An apparatus for adjusting a volume according to an environment, comprising: a receiving unit for receiving an audio signal; a signal analyzing unit coupled to the receiving unit for analyzing the sound signal and obtaining at least one signal source; and a filtering unit, The signal analysis unit is coupled to the signal source for filtering the signal source to obtain an ambient sound signal; an environmental analysis unit coupled to the filtering unit, according to the ambient sound signal and one of the storage unit audio data. Obtaining a volume control signal corresponding to the ambient sound signal; an adjusting unit coupled to the environment analyzing unit to determine whether a user preference adjustment signal is received; a control unit coupled to the adjusting unit, when When the adjustment unit does not receive the user preference adjustment signal, the output volume of one of the output audio signals of the device is adjusted according to the volume control signal; a timing unit is coupled to the receiving unit to determine whether a timing time exceeds a preset time; a playback unit coupled to the above control a unit for playing the output audio signal; and a determining unit coupled to the timing unit and the playing unit to determine whether the playing unit continuously plays the output audio signal; wherein when the timing unit determines that the timing time exceeds the foregoing When the determining unit determines that the playing unit continues to play the output audio signal, the determining unit transmits the consistent energy signal to the receiving order. And the receiving unit re-receives the sound signal. The device for adjusting the volume according to the environment as described in claim 1, wherein when the adjusting unit receives the user preference adjustment signal, the adjusting unit and the environment analyzing unit respectively adjust the user preference adjustment signal and the foregoing The ambient sound signal is stored in the storage unit, and the control unit adjusts the output volume of the device according to the user preference adjustment signal. The device for adjusting the volume according to the environment as described in claim 2, wherein the environment analysis unit adds or modifies the audio data according to the ambient sound signal and uses a linear regression analysis. The apparatus for adjusting the volume according to the environment, as described in claim 1, wherein the signal analysis unit analyzes the sound signal according to an independent component analysis method and obtains the signal source. A method for adjusting a volume according to an environment, comprising: receiving an audio signal; analyzing the audio signal and obtaining at least one signal source; filtering the signal source in the audio signal to obtain an ambient sound signal; The ambient sound signal and the audio data of one of the storage units obtain a volume control signal corresponding to the ambient sound signal; determine whether a user preference adjustment signal is received; and when the user preference adjustment signal is not received, Adjusting an output volume of an output audio signal of the device according to the volume control signal; wherein the method further comprises: Determining whether a time period exceeds a preset time; and determining whether to continuously play the output sound signal; wherein when determining that the time period exceeds the preset time and continuously playing the output sound signal, transmitting a consistent energy signal to re-receive the above Sound signal. The method for adjusting the volume according to the environment as described in claim 5, further comprising: storing the user preference adjustment signal and the ambient sound signal in the storage unit when receiving the user preference adjustment signal, And adjusting the output volume of the device according to the user preference adjustment signal. The method for adjusting the volume according to the environment as described in claim 6 of the patent application further includes: adding or modifying the audio data according to the ambient sound signal and using a linear regression analysis. The method for adjusting the volume according to the environment as described in claim 5, further comprising: analyzing the sound signal according to an independent component analysis method and obtaining the signal source.