KR20170038216A - Sound processing method, recording medium and device for performing the method - Google Patents
Sound processing method, recording medium and device for performing the method Download PDFInfo
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- KR20170038216A KR20170038216A KR1020150137245A KR20150137245A KR20170038216A KR 20170038216 A KR20170038216 A KR 20170038216A KR 1020150137245 A KR1020150137245 A KR 1020150137245A KR 20150137245 A KR20150137245 A KR 20150137245A KR 20170038216 A KR20170038216 A KR 20170038216A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
A noise reduction unit for generating a noise reduction signal based on the noise signal by receiving a noise signal which is an external noise of an acoustic output apparatus for outputting an acoustic signal inputted from the terminal apparatus, and for outputting the noise reduction signal to the terminal apparatus And the volume of the noise signal and the volume of the sound signal set by the user are matched with the volume of the sound signal and stored as the user's listening habit information, A sound processing method for evaluating listening habits is disclosed.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound processing method, a recording medium and an apparatus for performing the same, and more particularly, to a sound processing method for protecting the hearing of a user, and a recording medium and an apparatus for performing the same.
Portable audio output devices for individually listening to acoustic signals output from portable terminal devices such as MP3 players and smart phones without being disturbed by ambient noise have been developed and used in various ways. Such a portable sound output apparatus is typically an earphone inserted into a user's ear canal.
On the other hand, even if the earphone inserted in the ear canal of the user is used to listen to the sound signal outputted from the terminal device, various noises are generated in the urban environment, so that it is still inconvenient for listening to the sound signal.
In addition, most users have a habit of setting the volume of the sound signal too high to listen to the sound signal without being disturbed by the noise, and there is a problem with the user's hearing, such as the occurrence of hearing loss due to the high volume have.
Accordingly, it is necessary to develop various sound processing methods for the user's hearing protection by improving the user's listening habits, which can overcome the constantly changing external noise in the urban environment.
According to one aspect of the present invention, there is provided a sound processing method comprising: extracting an external noise signal repeatedly generated with a predetermined pattern, canceling external noise based on the extracted external noise signal, and providing user listening habit information on the listening volume according to external noise intensity A sound processing method is provided.
According to one aspect of the present invention, there is provided an acoustic processing method, comprising: receiving a noise signal, which is an external noise of an acoustic output device that outputs an acoustic signal input from a terminal device, to generate a noise reduction signal based on the noise signal; And a sound volume of the sound signal set by the user is extracted and the volume of the noise signal and the volume of the sound signal are matched with each other, Store it as the listening habit information, and evaluate the listening habits of the user based on the stored information.
If the volume of the sound signal is greater than a preset reference sound volume level, the volume of the sound signal may be adjusted to a predetermined volume reference value so that the volume of the sound signal may reach the appropriate volume reference value. And generating a control signal for controlling the volume of the signal and transmitting the control signal to the terminal device.
In addition, receiving a noise signal, which is an external noise of an acoustic output apparatus that outputs an acoustic signal input from the terminal, and generating a noise reduction signal based on the noise signal may include converting the noise signal into a digital noise signal, Extracting a white noise signal which is a signal repeatedly generated with a predetermined pattern in a specific frequency band based on the noise signal and inverting the white noise signal to generate the noise reduction signal.
The extraction of the white noise signal, which is a signal repeatedly generated in a predetermined frequency band based on the digital noise signal, may be performed by comparing sizes of the respective arrays of the continuous digital noise signals, And if the size changes within a predetermined error range, the frequency band in which the array is meant to be extracted may be extracted as the white noise signal.
In addition, the matching of the volume of the noise signal and the volume of the sound signal to store the user signal as the user's listening habit information may be performed by dividing the volume of the noise signal by a predetermined unit, And generates a listening habit graph in which the volume of the noise signal is the x-axis and the listening volume is the y-axis, and stores the generated graph as the user listening habit information.
It is also possible that the volume of the noise signal is matched with the volume of the sound signal to store the same as the user's listening habit information and the evaluation of the listening habit of the user based on the calculated value is calculated by calculating the slope of the listening habit graph, And to evaluate the user's listening habits according to the ambient noise intensity by comparing the slope of the habit graph with a predetermined reference value.
The method may further include calculating a slope of the listening habit graph at regular intervals and comparing the slopes of the continuously calculated haptic graph to evaluate the degree of improvement of the user's listening habit.
Further, it may be a computer-readable recording medium on which a computer program for performing a sound processing method is recorded.
According to another aspect of the present invention, there is provided an audio processing apparatus for performing communication with a terminal device or an audio output device for outputting audio signals input from the terminal device, the audio processing device comprising: An input unit for receiving the noise signal, which is external noise, and the sound signal; A noise control unit for generating a noise reduction signal for canceling the noise signal based on the noise signal; A volume control unit for extracting the volume of the sound signal and the noise signal, storing the volume of the noise signal and the volume of the sound signal as user listening habit information, and evaluating a listening habit of the user based on the user listening habit information; And an output unit transmitting the noise reduction signal and the user's listening habit assessment result to the terminal device.
The noise control unit may include an analog / digital converter for converting the noise signal into a digital noise signal; A white noise signal extracting unit for extracting a white noise signal which is a signal repeatedly generated with a predetermined pattern in a specific frequency band based on the digital noise signal; And a noise reduction signal generator for generating the noise reduction signal by inverting the white noise signal.
The volume control unit may include: a volume adjusting unit that extracts the volume of the sound signal and the noise signal; A listening habit information generating unit for generating a graph of a listening volume, which is the volume of the sound signal according to the volume of the noise signal, and storing the generated graph as the user listening habit information; And a listening habit evaluating unit for evaluating the listening habit of the user based on a graph of a listening volume, which is the volume of the sound signal according to the volume of the noise signal.
The volume adjusting unit may compare the volume of the extracted sound signal with a preset appropriate volume reference value, and when the volume of the sound signal is greater than a preset reference volume reference value, the volume of the sound signal is adjusted to the appropriate volume reference value And generating a control signal for controlling a volume of the sound signal so as to reach the sound signal.
The listening habit information generation unit may divide the volume of the noise signal by a preset unit, calculate an average of the listening volume, which is the volume of the sound signal, for each unit, and determine the volume of the noise signal as the x axis, A listening habit graph having the listening volume as the y-axis can be generated and stored as the user listening habit information.
The listening habit evaluator may calculate a slope of the listening habit graph, and compare the slope of the calculated habit graph with a predetermined reference value to evaluate the user's listening habit according to the ambient noise intensity.
The listening habit evaluating unit may further include calculating a slope of the listening habit graph at regular intervals and comparing the slopes of the sequentially calculated listening habit graphs to evaluate the degree of improvement of the listening habit of the user.
According to an aspect of the present invention, a method of extracting an external noise signal repeatedly generated with a predetermined pattern and canceling external noise based on the extracted external noise signal can actively cope with continuously changing ambient noise.
Also, by providing a sound processing method that provides user listening habit information on the listening volume according to the external noise intensity, the user can be alerted to hearing loss caused by the wrong listening habit.
1 is a diagram illustrating an audio output system including a sound processing apparatus according to an embodiment of the present invention.
2 is a control block diagram of a sound processing apparatus according to an embodiment of the present invention.
3 is a graph illustrating an example of a white noise signal and a noise reduction signal according to an embodiment of the present invention.
4 is a flowchart of a sound processing method of the noise control unit shown in FIG.
5 and 6 are flow charts of the sound processing method of the volume control unit shown in FIG.
The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.
Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.
1 is a diagram illustrating an audio output system including a sound processing apparatus according to an embodiment of the present invention.
1, a
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2 is a control block diagram of the
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The white noise signal extracting unit 122 can receive the digital noise signal from the analog / digital converting
Specifically, the white noise signal extracting unit 122 can extract the white noise signal according to the change in the volume of the digital noise signal continuously received from the analog-to-
In this way, the white noise signal extracting unit 122 continuously analyzes the digital noise signal according to real time or predetermined period, and can actively cope with continuously changing ambient noises. Since the white noise signal extracting unit 122 extracts a frequency band in which the volume changes in a predetermined error range as a white noise signal, only a signal generated repeatedly with a certain pattern of the digital noise signal is extracted as a white noise signal can do.
The noise reduction signal generation unit 123 can generate a noise reduction signal capable of canceling the noise signal based on the white noise signal. This will be described with reference to FIG.
3 is a graph illustrating an example of a white noise signal and a noise reduction signal according to an embodiment of the present invention.
Referring to FIG. 3 (a), the spectrum of the white noise signal extracted from the digital noise signal divided into 256 arrays can be confirmed. In FIG. 3 (a), it can be seen that a frequency band corresponding to approximately 1 to 13, 43 to 55, and 133 to 256 of the 256 arrangements is extracted as a white noise signal.
Referring to FIG. 3 (b), the inverted white noise signal can be confirmed. The noise reduction signal generation unit 123 can generate a noise reduction signal by inverting the white noise signal as described above. Therefore, when the noise reduction signal and the white noise signal overlap each other, destructive interference occurs, and both the noise reduction signal and the white noise signal can be canceled. In this way, the
The noise reduction signal generating unit 123 converts the generated noise reduction signal into an analog noise reduction signal so that the noise reduction signal can be output through the
As described above, since the white noise signal is a signal of a frequency band that varies only within a predetermined error range of the digital noise signal, the noise reduction signal generated by inverting the white noise signal in the noise reduction signal generation unit 123 is a sound output It is possible to remove only the noise that is generated repeatedly with a certain pattern among the noise outside the
On the other hand, the
The
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That is, when the volume of the sound signal currently outputting is greater than a preset reference volume reference value, a terminal device (not shown) outputs the sound signal so that the currently output sound signal can reach the preset appropriate volume reference value 200) to gradually adjust the volume of the sound signal currently being output. At this time, the
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Hereinafter, a sound processing method according to an embodiment of the present invention can be described with reference to FIGS.
The sound processing method according to an embodiment of the present invention can be performed in substantially the same configuration as the
FIG. 4 is a flowchart of a sound processing method of the noise control unit shown in FIG. 2, and FIGS. 5 and 6 are flowcharts of a sound processing method of the sound volume control unit shown in FIG.
4, a sound processing method according to an embodiment of the present invention may receive a noise signal from a
Thereafter, the
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5, a sound processing method according to an exemplary embodiment of the present invention includes receiving sound signals currently output from the
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6, a sound processing method according to an exemplary embodiment of the present invention includes receiving sound signals currently output from the
Thereafter, the volume of the sound signal currently output by the
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Thereafter, the slope of the listening habit graph is calculated 630 in the
In addition, the
Finally, the
As such, the sound processing method may be implemented in an application or may be implemented in the form of program instructions that can be executed through various computer components and recorded in a computer-readable recording medium. The computer-readable recording medium may include program commands, data files, data structures, and the like, alone or in combination.
The program instructions recorded on the computer-readable recording medium may be ones that are specially designed and configured for the present invention and are known and available to those skilled in the art of computer software.
Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like.
Examples of program instructions include machine language code such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules for performing the processing according to the present invention, and vice versa.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.
100: sound processing device
200: terminal device
300: sound output device
Claims (15)
The volume of the noise signal and the volume of the sound signal set by the user are extracted and stored in the user's listening habit information by matching the volume of the noise signal and the volume of the sound signal and storing the user's listening habits The sound processing method being evaluated.
Comparing the sound volume of the sound signal with a preset appropriate volume reference value,
Generates a control signal for controlling the volume of the sound signal so that the volume of the sound signal can reach the appropriate volume reference value if the volume of the sound signal is greater than a predetermined reference volume reference value and transmits the control signal to the terminal device Lt; / RTI >
Receiving a noise signal, which is an external noise of an acoustic output device that outputs an acoustic signal input from the terminal device, and generating a noise reduction signal based on the noise signal,
Converts the noise signal into a digital noise signal,
Extracting a white noise signal which is a signal repeatedly generated with a predetermined pattern in a specific frequency band based on the digital noise signal,
And the noise reduction signal is generated by inverting the white noise signal.
Extracting the white noise signal, which is a signal repeatedly generated with a certain pattern in a specific frequency band based on the digital noise signal,
Comparing the sizes of the respective arrays of the digital noise signals in succession and extracting the frequency band in which the arrays are within a predetermined error range as the white noise signal.
And storing the user's listening habit information by matching the volume of the noise signal with the volume of the sound signal,
Wherein the sound volume of the noise signal is divided into a predetermined unit and an average of the listening volume as the sound volume of the sound signal is calculated for each unit to obtain a listening habit having the volume of the noise signal as the x axis and the listening volume as the y axis And generating a graph and storing the graph as the user's listening habit information.
The method comprising: matching the volume of the noise signal with the volume of the sound signal to store the same as user listening habit information, and evaluating a listening habit of the user based on the stored information;
Calculating a slope of the listening habit graph, and comparing the slope of the calculated listening habit graph with a predetermined reference value to evaluate the user's listening habits according to the ambient noise intensity.
Further comprising calculating a slope of the listening habit graph at regular intervals and comparing the slopes of the successively calculated listening habit graphs to evaluate the degree of improvement of the user's listening habit.
An input unit for receiving the noise signal and the sound signal, which are external sounds of the sound output apparatus, from the terminal apparatus or the sound output apparatus;
A noise control unit for generating a noise reduction signal for canceling the noise signal based on the noise signal;
A volume control unit for extracting the volume of the sound signal and the noise signal, storing the volume of the noise signal and the volume of the sound signal as user listening habit information, and evaluating a listening habit of the user based on the user listening habit information; And
And an output unit for transmitting the noise reduction signal and the user's listening habit assessment result to the terminal apparatus.
The noise control unit includes:
An analog / digital converter for converting the noise signal into a digital noise signal;
A white noise signal extracting unit for extracting a white noise signal which is a signal repeatedly generated with a predetermined pattern in a specific frequency band based on the digital noise signal; And
And a noise reduction signal generating unit for generating the noise reduction signal by inverting the white noise signal.
Wherein the volume control unit comprises:
A volume adjusting unit for extracting a volume of the sound signal and the noise signal;
A listening habit information generating unit for generating a graph of a listening volume, which is the volume of the sound signal according to the volume of the noise signal, and storing the generated graph as the user listening habit information; And
And a listening habit evaluating unit for evaluating a listening habit of the user based on a graph of a listening volume, which is the volume of the acoustic signal in accordance with the volume of the noise signal.
Wherein the volume adjusting unit comprises:
Comparing the volume of the extracted sound signal with a preset appropriate volume reference value,
And generating a control signal for controlling the volume of the sound signal so that the volume of the sound signal can reach the appropriate volume reference value if the volume of the sound signal is greater than a preset reference volume reference value Device.
Wherein the listening habit information generating unit comprises:
Wherein the sound volume of the noise signal is divided into a predetermined unit and an average of the listening volume as the sound volume of the sound signal is calculated for each unit to obtain a listening habit having the volume of the noise signal as the x axis and the listening volume as the y axis Generates a graph and stores the graph as the user's listening habit information.
The listening habit evaluating unit,
And calculates a slope of the listening habit graph, and compares the slope of the calculated listening habit graph with a predetermined reference value to evaluate the listening habits of the user according to the ambient noise intensity.
The listening habit evaluating unit,
Further comprising calculating a slope of the listening habit graph at regular intervals and comparing the slopes of the continuously calculated haptic graph to evaluate the degree of improvement of the user's listening habit.
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| KR20190104820A (en) * | 2018-03-02 | 2019-09-11 | 한림대학교 산학협력단 | Volume control apparatus and system for preventing music-induced hearing loss |
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| KR100772880B1 (en) * | 2006-05-24 | 2007-11-05 | 삼성전자주식회사 | Portable media player and sound managing method using the information of ambient noises |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20190104820A (en) * | 2018-03-02 | 2019-09-11 | 한림대학교 산학협력단 | Volume control apparatus and system for preventing music-induced hearing loss |
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