CN110839193A - Electronic system and audio processing method - Google Patents
Electronic system and audio processing method Download PDFInfo
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- CN110839193A CN110839193A CN201810928869.0A CN201810928869A CN110839193A CN 110839193 A CN110839193 A CN 110839193A CN 201810928869 A CN201810928869 A CN 201810928869A CN 110839193 A CN110839193 A CN 110839193A
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- audio
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- equalizer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
Abstract
The invention discloses an electronic system and an audio processing method. The electronic system comprises a physiological signal sensor, a processing circuit, an audio processing circuit and an audio output device. The physiological signal sensor is used for measuring a physiological signal of a user. The processing circuit is used for determining an audio setting according to the physiological signal. The audio processing circuit is used for receiving an audio signal and adjusting the audio signal according to the audio setting to generate an audio output signal. The audio output device is used for playing the audio output signal.
Description
Technical Field
The present invention relates to electronic systems and audio processing methods, and particularly to an electronic system and an audio processing method capable of dynamically adjusting sound field effects in real time.
Background
With the development of science and technology, the opportunities for portable electronic devices such as wearable devices, mobile communication devices, notebook computers, tablet computers, portable video players, etc. to be used in daily life have increased greatly, and multimedia functions have been emphasized more and more. Generally, a portable electronic device can play an audio signal through an audio output (audio output) device. However, when playing audio signals, if the same sound stage effect is used to play the audio signals all the time, it is easy for users (users) to feel dull when listening to the audio. In view of the above, there is a need for improvement in the prior art.
Disclosure of Invention
Therefore, the present invention provides an electronic system and an audio processing method capable of dynamically adjusting the sound field effect in real time.
The invention discloses an electronic system, comprising: a physiological signal sensor for measuring a physiological signal of a user; a processing circuit for determining an audio setting according to the physiological signal; an audio processing circuit for receiving an audio signal and adjusting the audio signal according to the audio setting to generate an audio output signal; and an audio output device for playing the audio output signal.
The invention also discloses an audio processing method, which comprises the following steps: measuring a physiological signal of a user; determining an audio setting according to the physiological signal; receiving an audio signal and adjusting the audio signal according to the audio setting to generate an audio output signal; and playing the audio output signal.
Drawings
FIG. 1 is a diagram of an electronic system according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a process according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a brain wave signal according to an embodiment of the present invention.
Fig. 4 to 6 are schematic diagrams of equalizer settings according to embodiments of the present invention.
Fig. 7 is an operation diagram of an indicating device according to an embodiment of the invention.
Wherein the reference numerals are as follows:
1 electronic system
2 scheme
10 physiological signal sensor
20 processing circuit
30 audio processing circuit
40 audio output device
50 storage device
60 indicating device
EQ1, EQ2, EQ3 equalizer settings
S200, S202, S204, S206, S208, step
S210
T0, T1, T2, T3, T4 time
TH1, TH2 threshold value
Detailed Description
Certain terms are used throughout the description and following claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and the claims that follow do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. Also, the term "coupled" is used herein to encompass any direct or indirect electrical connection. Thus, if a first device couples to a second device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections.
Referring to fig. 1, fig. 1 is a schematic diagram of an electronic system 1 according to an embodiment of the invention. The electronic system 1 can be applied to various electronic products, such as an earphone system, a speaker system, a mobile communication device, a notebook computer, a wearable device, and a head-mounted device, but not limited thereto. The electronic system 1 includes a physiological signal sensor 10, a processing circuit 20, an audio processing circuit 30, an audio output device 40, a storage device 50, and an indication device 60. The physiological signal sensor 10 is used for measuring a physiological signal of a user. The physiological signal sensor 10 may be an electroencephalograph (EEG), an electrocardiograph (ECG or EKG), a rhythm variability analyzer (HRV), a temperature sensor, an image sensor, an infrared sensor, and a pressure sensor, but is not limited thereto. The physiological signal measured by the physiological signal sensor 10 may be, but is not limited to, a brain wave signal, an electrocardiogram signal, a heartbeat frequency signal, a heartbeat oscillation change signal, a pulse signal, a blood pressure signal, a respiratory frequency signal, a body temperature signal, a respiratory frequency signal, and the like.
The processing circuit 20 is used for determining an audio setting according to the physiological signal measured by the physiological signal sensor 10. The processing circuit 20 may be a Microprocessor Control Unit (MCU) chip, but is not limited thereto. The audio processing circuit 30 is used for receiving an audio signal, and the audio processing circuit 30 adjusts the audio signal according to the audio setting determined by the processing circuit 20 to generate an audio output signal. The audio processing circuit 30 may be a Digital Signal Processor (DSP) chip, but is not limited thereto. The audio output device 40 is used to play audio output signals. The audio output device 40 may be a headphone or a speaker, but not limited thereto. The storage device 50 may be any storage device that can store data.
For an operation of the electronic system 1, please refer to fig. 2. Fig. 2 is a schematic diagram of a process 2 according to an embodiment of the present invention. Scheme 2 comprises the following steps:
step S200: and starting.
Step S202: measuring the physiological signal of the user.
Step S204: an audio setting is determined based on the measured physiological signal.
Step S206: adjusting the audio signal according to the determined audio setting to generate an audio output signal.
Step S208: an audio output signal is played.
Step S210: and (6) ending.
According to the process 20, in step S202, the physiological signal sensor 10 can measure a physiological signal of a user when the electronic system 1 is in operation.
Next, in step S204, the processing circuit 20 determines an audio setting according to the physiological signal measured by the physiological signal sensor 10. For example, if the physiological signal sensor 10 is a electroencephalograph and the measured physiological signal is a brain wave signal. The processing circuit 20 can determine an audio setting according to the measured brain wave signals of the physiological signal sensor 10.
For example, the processing circuit 20 may determine an audio setting according to the amplitude of the electroencephalogram signal measured by the physiological signal sensor 10. Referring to fig. 3, fig. 3 is a schematic diagram of an electroencephalogram signal according to an embodiment of the present invention. As shown in fig. 3, the electroencephalogram signal exhibits different amplitude variations according to the current state of the user. When the user is in a relaxed state, the amplitude of the brain wave signal is less than or equal to a threshold value (TH 1). When the user is in a normal waking state, the amplitude of the brain wave signal is between the threshold TH1 and the threshold TH 2. When the user is in a state of concentration or tension, the amplitude of the brain wave signal is greater than or equal to the threshold TH 2. In step S204, the processing circuit 20 may compare the amplitude of the brain wave signal with the threshold TH1 and the threshold TH 2. In one embodiment, when the processing circuit 20 determines that the amplitude of the brain wave signal is less than or equal to the threshold TH1 (e.g., between time T3 and time T4), the processing circuit 20 selects an equalizer (equalizer) setting EQ1 as the audio setting, and the processing circuit 20 transmits a first audio setting selection signal to the audio processing circuit 30 to instruct the audio processing circuit 30 to process the audio signal with the equalizer setting EQ 1. In another embodiment, when the processing circuit 20 determines that the amplitude of the brain wave signal is between the threshold TH1 and the threshold TH2 (e.g., between time T0 and time T1 or between time T2 and time T3), the processing circuit 20 selects an equalizer setting EQ2 as the audio setting. Then, the processing circuit 20 sends a second audio setting selection signal to the audio processing circuit 30 to instruct the audio processing circuit 30 to process the audio signal with the equalizer setting EQ 2. In yet another embodiment, when the processing circuit 20 determines that the amplitude of the brain wave signal is greater than or equal to the threshold TH2 (e.g., between time T1 and time T2), the processing circuit 20 selects an equalizer setting EQ3 as the audio setting. Then, the processing circuit 20 sends a third audio setting selection signal to the audio processing circuit 30 to instruct the audio processing circuit 30 to process the audio signal with the equalizer setting EQ 3.
In step S206, the audio processing circuit 30 receives an audio signal. In response to the audio setting determined by the processing circuit 20, the audio processing circuit 30 adjusts the audio signal according to the audio setting determined by the processing circuit 20 to generate an audio output signal. For example, the storage device 50 stores a plurality of different audio settings. The audio processing circuit 30 can read the audio setting determined by the processing circuit 20 from the storage device 50, and accordingly adjust the audio signal to generate an audio output signal corresponding to the audio setting. For example, the storage device 50 stores equalizer settings EQ 1-EQ 3. Referring to fig. 4 to 6, fig. 4 to 6 are schematic diagrams of equalizer settings EQ1 to EQ3 according to an embodiment of the present invention. Each equalizer is set to have a different volume (or gain) setting at different frequencies. Different equalizer settings will bring different sound playing effects to the user and also bring more music enjoyment. For example, as shown in fig. 4, the equalizer setting EQ1 shown in fig. 4 enhances the sound volume (sound pressure level) of the high-pitch frequency range, compared to the equalizer setting EQ2 shown in fig. 5. That is, the volume of the treble frequency range of the equalizer setting EQ1 may be greater than the volume of the treble frequency range of the equalizer setting EQ 2. As shown in fig. 6, the equalizer setting EQ3 of fig. 6 enhances the volume in the bass frequency range compared to the equalizer setting EQ2 of fig. 5. That is, the volume of the bass frequency range of the equalizer setting EQ3 will be greater than the volume of the equalizer setting EQ2 bass frequency range. In this case, when the audio setting determined by the processing circuit 20 is the equalizer setting EQ1, the audio processing circuit 30 may use the equalizer setting EQ1 to adjust the audio signal to generate an audio output signal corresponding to the equalizer setting EQ 1. When the audio setting determined by the processing circuit 20 is the equalizer setting EQ2, the audio processing circuit 30 may use the equalizer setting EQ2 to adjust the audio signal to produce an audio output signal corresponding to the equalizer setting EQ2, and so on.
In step S208, the audio output device 40 receives the audio output signal from the audio processing circuit 30 and plays the sound to the user for listening according to the audio output signal. In short, when the user is resting meditation and is in a relaxed state, the processing circuit 20 of the present invention determines that the amplitude of the brain wave signal is less than or equal to the threshold TH1 and selects the equalizer setting EQ1 as the audio setting. Audio processing circuit 30 processes the audio signal with equalizer setting EQ1 to produce an audio output signal corresponding to equalizer setting EQ 1. In this case, the sound field effect heard by the user can enhance the response output of the medium and high audio frequencies, so as to bring crisp and vivid sound field feeling. When the user is in a normal wake-up state while listening to broadcast music, the processing circuit 20 determines that the amplitude of the brain wave signal is between the threshold TH1 and the threshold TH2 and selects the equalizer setting EQ2 as the audio setting. Audio processing circuit 30 then processes the audio signal with equalizer setting EQ2 to produce an audio output signal corresponding to equalizer setting EQ 2. At this time, the sound stage effect heard by the user is a nearly flat sound frequency response output without any modification. When the user is playing an online game while being under attentive stress, the processing circuit 20 determines that the amplitude of the brain wave signal is greater than or equal to the threshold TH2 and selects the equalizer setting EQ3 as the audio setting. Audio processing circuit 30 processes the audio signal with equalizer setting EQ3 to produce an audio output signal corresponding to equalizer setting EQ 3. At this time, the sound field effect heard by the user has the effect of strengthening the volume output in the middle and low frequency range to bring the sound field feeling of the soundness and the strength. In other words, the present invention can dynamically adjust the sound field effect of the sound in real time according to the current state of the user, thereby providing better listening experience for the user.
On the other hand, in step S206, the processing circuit 20 may further generate a control signal to control the indicating device 60 to generate the prompt signal after determining the equalizer setting, so as to inform the user of the current audio setting status. For example, the user may be notified by generating a notification signal in various ways (e.g., light, text, sound, voice, or vibration). In this way, in step S208, while the audio output device 40 plays the sound corresponding to the equalizer setting for the user to listen, the user can also know the audio setting currently used by the electronic system in real time through the indication of the indicating device 60. In one embodiment, the indicating device 60 can be a Light source device, wherein the Light source device can include a Light Emitting Diode (LED), an Organic Light Emitting Diode (OLED), a micro-LED (μ LED), or any other device capable of Emitting Light. Referring to fig. 7, fig. 7 is a schematic diagram illustrating an operation of an indicating device 60 according to an embodiment of the invention. As shown in part (a) of fig. 7, after determining that the audio setting is the equalizer setting EQ1, the processing circuit 20 generates a first control signal to control the indicating device 60 to generate a blue light signal to inform the user that the current audio setting is the equalizer setting EQ 1. As shown in part (b) of fig. 7, after determining the audio setting EQ2, the processing circuit 20 generates a second control signal to control the indicating device 60 to generate a green light signal to inform the user that the current audio setting is EQ 2. As shown in part (c) of fig. 7, after determining the audio setting EQ3, the processing circuit 20 generates a third control signal to control the indicating device 60 to generate a red light signal to inform the user that the current audio setting is EQ 3. In addition, the light emitting manner of the light source device of the indicating device 60 may be a continuous display and/or a blinking display, so as to enhance the user experience.
The steps and/or processes described above, including the suggested steps, can be implemented by hardware, software, firmware (a combination of hardware and computer instructions and data embodied in hardware and readable software on a hardware device), an electronic system, or a combination thereof. The processes and embodiments described above may be compiled into program code or instructions and stored in the storage device 50. The processing circuit 20 and the audio processing circuit 30 can be used for reading and executing program codes or instructions from the storage device 50 to realize the above functions.
In summary, the electronic system of the present invention can dynamically adjust the sound field effect of the sound in real time according to the current state of the user, thereby providing better listening experience for the user. In addition, when the sound set by the corresponding equalizer is played and listened by the user, the user can also know the audio setting adopted by the current electronic system in real time through the indication of the indicating device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electronic system, comprising:
a physiological signal sensor for measuring a physiological signal of a user;
a processing circuit for determining an audio setting according to the physiological signal;
an audio processing circuit for receiving an audio signal and adjusting the audio signal according to the audio setting to generate an audio output signal; and
an audio output device for playing the audio output signal.
2. The electronic system of claim 1, wherein the physiological signal sensor is a electroencephalograph and the physiological signal is a brain wave signal; and the processing circuit determines the audio setting according to the amplitude of the brain wave signal.
3. The electronic system as claimed in claim 2, wherein the processing circuit compares the amplitude of the brain wave signal with a first threshold value, a second threshold value; when the processing circuit judges that the amplitude of the brain wave signal is less than or equal to the first threshold value, the processing circuit selects a first equalizer setting as the audio setting; when the processing circuit determines that the amplitude of the electroencephalogram signal is between the first threshold value and the second threshold value, the processing circuit selects a second equalizer setting as the audio setting; and when the processing circuit judges that the amplitude of the brain wave signal is greater than or equal to the second threshold value, the processing circuit selects a third equalizer setting as the audio setting.
4. The electronic system of claim 3, wherein the volume of the treble frequency range set by the first equalizer is greater than the volume of the treble frequency range set by the second equalizer; and the volume of the bass frequency range set by the third equalizer is larger than the volume of the bass frequency range set by the second equalizer.
5. The electronic system of claim 1, wherein the physiological signal sensor is an electrocardiograph and the physiological signal is an electrocardiograph signal.
6. An audio processing method, comprising:
measuring a physiological signal of a user;
determining an audio setting according to the physiological signal;
receiving an audio signal and adjusting the audio signal according to the audio setting to generate an audio output signal; and
the audio output signal is played.
7. The audio processing method of claim 6, wherein the physiological signal is a brain wave signal, and wherein determining the audio setting based on the physiological signal comprises determining the audio setting based on the brain wave signal
The audio setting is determined according to the amplitude of the electroencephalogram signal.
8. The method of claim 7, wherein determining the audio setting based on the amplitude of the electroencephalogram signal includes determining the audio setting by
Comparing the amplitude of the brain wave signal with a first threshold value and a second threshold value;
selecting a first equalizer setting as the audio setting when the amplitude of the electroencephalogram signal is less than or equal to the first threshold value;
selecting a second equalizer setting as the audio setting when the amplitude of the brain wave signal is between the first threshold and the second threshold; and
when the amplitude of the electroencephalogram signal is greater than or equal to the second threshold value, a third equalizer setting is selected as the audio setting.
9. The audio processing method as claimed in claim 8, wherein the volume of the treble frequency range set by the first equalizer is greater than the volume of the treble frequency range set by the second equalizer; and the volume of the bass frequency range set by the third equalizer is larger than the volume of the bass frequency range set by the second equalizer.
10. The audio processing method of claim 6, wherein the physiological signal is an electrocardiogram signal.
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| CN201810928869.0A CN110839193A (en) | 2018-08-15 | 2018-08-15 | Electronic system and audio processing method |
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| CN201810928869.0A CN110839193A (en) | 2018-08-15 | 2018-08-15 | Electronic system and audio processing method |
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| EP0747080A1 (en) * | 1995-06-08 | 1996-12-11 | Alpha International Corp. | Brain wave inducing device |
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