KR101659410B1 - Sound optimization device and method about combination of personal smart device and earphones - Google Patents
Sound optimization device and method about combination of personal smart device and earphones Download PDFInfo
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- KR101659410B1 KR101659410B1 KR1020150049759A KR20150049759A KR101659410B1 KR 101659410 B1 KR101659410 B1 KR 101659410B1 KR 1020150049759 A KR1020150049759 A KR 1020150049759A KR 20150049759 A KR20150049759 A KR 20150049759A KR 101659410 B1 KR101659410 B1 KR 101659410B1
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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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
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
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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
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
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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
- H04R2227/00—Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups
- H04R2227/009—Signal processing in [PA] systems to enhance the speech intelligibility
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Abstract
The present invention relates to an apparatus and method for correcting the output of left and right speakers so as to be optimized for a user in a stereo earphone or headset having left and right speakers capable of listening to sounds using a personal smart device such as a smart phone or a tablet PC In more detail, in a combination of a microphone and a stereo device and a stereo earphone or a headset having an audio output unit for outputting audio data to a speaker, the output of the left and right speakers is corrected to be optimized for the user with reference to the left and right hearing information of the user (A) a test signal generator for outputting left and right audio test signals including volume information to left or right speakers of the stereo earphone or headset at predetermined time intervals or according to a user's key signal; (B) an output characteristic measuring unit for receiving the output audio of the right and left speakers from the microphone according to the audio test signal, measuring the output characteristic, and temporarily storing the measured output characteristic; (C) a hearing-power input unit for receiving an absolute value or a relative value of the left and right hearing of the user; (D) compares the output characteristics of the input left and right speakers to calculate the correction value so that the output of the left and right speakers coincides with the volume information obtained by correcting the left and right hearing of the user, and corrects the output of the left or right speaker And an operation correcting unit for tuning the audio output unit. The present invention relates to a stereo earphone and a device for correcting an output of a left and right speaker of a headset to be optimized for a user.
Description
The present invention relates to an apparatus and method for correcting the output of left and right speakers so as to be optimized for a user in a stereo earphone or headset having left and right speakers capable of listening to sounds using a personal smart device such as a smart phone or a tablet PC .
In 2014, the penetration rate of smartphones per global population was 24.5%, exceeding PC (20.0%) ('2015 Mobile Trend Forecast' report, KT Economic Research Institute), and domestic smartphone subscribers are reported to be over 40 million have.
Due to the spread of smartphones and rapid network construction, the increase of high-definition content, the appearance of unlimited rate plans, and the large screen of smartphones, it is possible to make individual calls in public places such as homes or coffee shops, , Games, listening to music, watching videos, and so on.
When using the contents including the sound with the smartphone, the personal stereo stereo listening device such as the earphone or the headset is utilized to enjoy the high quality sound while protecting the privacy without damaging the other people around.
Earphones and headsets are a type of acoustic transducer that converts electrical signals into sound. They are miniaturized so that they can be worn on the ear. Normally, the left and right sides of the headset are fixed with a structure other than a cable, It is generally called an earphone. Hereinafter, a small acoustic transducer that converts electrical signals into sound is simply referred to as an earphone. Earphones can be used for a variety of applications such as communication, broadcasting, learning, music appreciation, etc., because they can hear much smaller sound signals than normal speakers and can hear sounds without disturbing or disturbing the surroundings.
On the other hand, assuming that the left and right balances of the sound source are the same, the left and right balance of the sound actually felt when the user listens to the sound using the earphone is the mechanical factors caused by the sound device and earphone characteristics such as MP3 and smart phone, It is determined by sensory factors depending on left and right hearing.
For example, sound equipment and earphones are subjected to a test including left-right balance of sound before shipment. However, since it is difficult to improve the performance once it is manufactured, it is generally accepted as acceptable product even if there is a difference in balance within a predetermined range to be. Particularly, earphone is mainly composed of diaphragm, unit, cable, magnet, and plug. The performance of earphone depends on the structure and performance of each part, the fidelity of each part, design and cable quality. It is generally known that the quality control is performed within 10% difference between left and right volume, except high quality products for high-end users.
Software problems (if the sound balance is adjusted incorrectly on the equalizer) can also cause problems with the left and right balance.
In addition, there are many cases in which the left and right eyes have different hearing powers, as there are many different cases of visual acuity. The degree of hearing loss (unit: dB) is usually classified as normal (0 to 20), hardness (21 to 40), moderate (41 to 70), altitude (71 to 90) and depth (91 or more) The actual hearing may be different.
Therefore, even if a high-quality sound device and earphone that have precisely adjusted the left / right balance of sound are used, the left and right balances of the sound device and the earphone (especially earphone) do not match even if the hearing of both sides of the user is different, Ultimately the user will be consuming high quality content at low volume because the volume of the left and right earphones listens to the sound physically or sensibly in different states and even as the left and right volume is repeatedly used in different states, There is a concern.
It is an object of the present invention to provide an apparatus and a method for correcting output of a left ear speaker and a right ear speaker of a stereo earphone or a headset in a smart device so as to be optimized for a user.
It is another object of the present invention to provide an apparatus and method for correcting the output of a stereo earphone or a headset of a headset to be optimized for a user in a smart device.
According to an aspect of the present invention, there is provided a method for optimizing a user's output of a left and a right speaker by referring to a user's left and right hearing information in a combination of a microphone, a smart device having an audio output unit for outputting audio data to a speaker, (A) a test signal generator for outputting left and right audio test signals including volume information to left or right speakers of the stereo earphone or a headset with a predetermined time difference or according to a user's key signal; (B) an output characteristic measuring unit for receiving the output audio of the right and left speakers from the microphone according to the audio test signal, measuring the output characteristic, and temporarily storing the measured output characteristic; (C) a hearing-power input unit for receiving an absolute value or a relative value of the left and right hearing of the user; (D) compares the output characteristics of the input left and right speakers to calculate a correction value such that the output of the left and right speakers coincides with the volume information obtained by correcting the left and right hearing of the user, and corrects the output of the left or right speaker And corrects the output of the left and right speakers of the stereo earphone and the headset to be optimized for a user. .
As described above, according to the present invention, even if the user has different left and right hearing aids or a stereo earphone or a headset having different outputs of the left and right speakers, the output can be corrected in a software manner so as to be optimized for a user.
Therefore, according to the present invention, a middle-priced stereo earphone or a headset can be optimized for each user, and high-quality sound can be heard.
1 is a conceptual diagram showing a relationship between audio data, an audio output unit, and an earphone in a conventional smart device.
Fig. 2 is a conceptual diagram of a relationship between a correction device, a smart device and an earphone according to the present invention. Fig.
3A is a conceptual diagram showing that the same sound pressure (volume) transmitted to the left and right ears of a user can be different from the sound pressure sensed.
FIG. 3B is an exemplary view showing an operation relationship between an audio output part and an earphone-microphone when using the correction device according to the present invention. FIG.
3C is a conceptual diagram for calculating a correction value using a correction device according to the present invention.
4 is a flowchart showing the progress of the correction method according to the present invention;
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings illustrate only the contents and scope of technology of the present invention, and the technical scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the technical idea of the present invention based on these examples.
In the present invention, an earphone, a headset (headphone), and the like are referred to as an earphone as a small acoustic transducer that converts an electrical signal into sound. In the present invention, the term "smart device " means a device that has a specific processor such as a smart phone, a PC, a notebook, MP3, navigation, and a Bluetooth headset so that it can listen to sound from digital audio data through the processor.
As described above, the present invention provides a device for correcting the output of left and right speakers to be optimized for a user by referring to the left and right hearing information of a user in a smart device, a stereo earphone or a headset combination having a microphone and an audio output unit for outputting audio data to a speaker A program for performing the same, and a smart device having such a function. The operation of the device and the performance of the method may be initiated by a left and right hearing aid input and / or a speaker output correcting key signal inputted or selected by the user, wherein the left and right speakers are connected to the microphone of the smart device They are arranged in the direction symmetrical with the same interval or alternately arranged in the microphone with the same interval and the time difference.
FIG. 1 conceptually shows the relationship between audio data, an audio output unit, and an earphone in a conventional smart device. As shown in the figure, the audio output unit corresponds to an 'audio output device' that receives audio data received from a storage medium or a network and outputs the audio data to a speaker (here, left and right speakers of an earphone) according to information of the audio data. The audio output portion may include an equalizer.
(1) Device related invention
The present invention relates to a correction device including a hearing input unit, a test signal generating unit, an output characteristic measuring unit, and an arithmetic and correction unit for correcting output of left and right speakers to be optimized for a user by referring to left and right hearing information of a user in a combination of a smart device and an earphone. And a smart device having the correction device incorporated therein. The correction device according to the present invention may exist in the smart device separately from the smart device, or it may be integrated with the components of the smart device (for example, software or app recorded in the CPU, storage device, etc.).
FIG. 2 is a conceptual diagram illustrating a relationship between a calibrating device, a smart device and an earphone according to the present invention, and FIG. 3a is a conceptual diagram showing that the same sound pressure (volume) FIG. 3B is an exemplary diagram illustrating an operation relationship between the audio output unit and the earphone-microphone when using the correction apparatus according to the present invention. 3C is a conceptual diagram for calculating a correction value using the correction device according to the present invention. FIG. 2 also shows the case where the correction device according to the present invention (indicated by a blue square) exists separately from the smart device, and when the correction device is embedded in the smart device (indicated by a red square). In FIG. 2, the flow of information (signal, audio, or command) between the respective components in the device and the smart device according to the present invention is shown in the order of (1) to (6).
In order to operate the correcting device according to the present invention, the left and right speakers of the earphone should be equally spaced and oriented with respect to the microphone. For example, the left and right speakers may be positioned at the same interval and the same direction with respect to the microphone. When a predetermined signal (for example, the following test signal is outputted from the left speaker, Signal or emoticon), the handler may alternately position the left and right speakers so that they are equally spaced and oriented relative to the microphone.
In the present invention, the test signal generator outputs the left and right audio test signals including volume information (sound pressure information) to the left and right speakers of the stereo earphone connected to the smart device through the jack. At this time, the left test signal is output to the left speaker of the earphone and the right test signal is output to the right speaker of the earphone with a time difference. The test signal is automatically output to the left or right speaker with a predetermined time difference, .
Although it is possible to directly transmit a signal from the test signal generating unit to the speaker of the earphone, it is preferable to pass through the audio output unit as shown in FIG.
At this time, the audio test signal may include various sound quality information as well as direction information (information on the left speaker and the right speaker) and volume information. As illustrated in FIG. 3B, the audio test signal may be "output A audio data to the left speaker at 10 dB size" and "audio data A at 10 dB output to the right speaker".
In the present invention, the output characteristic measuring unit measures the output characteristics of the output audio of the left and right speakers input by the microphone and temporarily stores the measured output characteristics.
3B, the output characteristic measuring unit receives the audio output from the microphone as "output at 10 dB in the size of the left speaker ", and the output characteristic of" 8 dB in audio output to the left speaker " 10dB in size, and the output of the microphone is "9dB of audio output to the right speaker".
In the present invention, the hearing-aid input unit receives the absolute value or the relative value of the left and right hearing of the user. The hearing ability of the user may be measured by a hearing aid which is included in the device according to the present invention or a hearing aid which is used in an earphone or an earphone professional center. At this time, the measurement result value (the absolute value or the relative value of the left and right hearing of the user) may be automatically input to the hearing input unit, or may be input manually by a user or an administrator. The left and right hearing values of the user input to the hearing input unit are the absolute values [left = 9; Right = 8.5] or relative value [left = 1; R = 8.5 / 9].
In the present invention, the calculation correction unit compares the output characteristics of the left and right speakers stored in the output characteristic measurement unit, and compares the output values of the left and right speakers with the volume information obtained by correcting the left and right hearing And tunes the audio output section to correct the output of the left or right speaker according to the correction value. That is, in consideration of the left and right speaker output characteristics of the earphone, the audio output unit can correct the volume information of the test signal so that the user can feel the same sound pressure in the right and left directions even if the user's left and right hearing is different. For example, if the left and right hearing powers of the user are 9 and 8.5 dB, respectively, the output of the left speaker is attenuated to 8.5 / 9 compared to the right speaker, or the output of the right speaker is increased to 9 / 8.5 .
Referring to FIG. 3C, the correction value (x) for volume tuning is calculated as follows.
In the figure and the above formula, x, a, and b are respectively as follows.
x: Correction value of the right sound volume to the left sound volume of audio data
a: Relative value of the output characteristic of the right speaker to the left speaker output characteristic of the earphone
b: Output relative value of the right speaker to the earphone's final left speaker output
= The left ear hearing relative value of the right ear of the earphone user
Taking FIGS. 3A and 3B as an example, the correction value is calculated as follows.
That is, if the output ratio of the left and right speakers is [8.5: 9] when the right sound volume is corrected to x = 72 / 76.5 times (or the left sound volume is corrected to 1 / x = 76.5 / 72 times) And a user with different hearing ability perceives (senses) the sound balanced by [1: 1].
According to the apparatus for correcting the output of the left and right speakers of the earphone of the present invention, when the output correction for the earphone selected by the user is completed, the audio data received and output by the storage medium or the network is corrected by the tuned audio output unit The difference in the left and right hearing abilities of the user is canceled, so that the user can listen to high quality audio at the same volume in the left and right speakers. In the above example, only the volume is corrected, but it is also possible to compare and correct the sound quality of the left and right speakers according to a known sound quality measuring method.
Further, according to the apparatus for correcting the output of the left and right speakers of the earphone of the present invention, in the above-described example, although the correction is performed for a predetermined single sound volume, more precise correction may be performed for every predetermined sound volume interval, It is also possible to do.
To this end, the audio test signal is normally repeated at a predetermined volume interval in a range of volume permitted by the earphone, or repeated at a predetermined frequency interval in an audible frequency range, and the audio output unit is repeated for a predetermined volume or volume Tuned by frequency.
(2) Method related inventions
The present invention relates to a method of correcting the output of left and right speakers of a stereo earphone, comprising a test signal output step, a test audio input step, an output characteristic measurement step, a hearing input step, a correction value determination step and a tuning step, And a smart device in which the program is recorded.
FIG. 4 is a flow chart of the correction method according to the present invention. The physical device for performing the correction method according to the present invention may exist separately from the smart device, but the smart device itself may also be used. The physical device for performing the correction method according to the present invention may be the above-described correction device.
The positional relationship between the left and right speakers of the earphone and the microphone, and the manner of operation of the left and right speakers (alternate operation, time difference output) are as described in the above-mentioned apparatus invention.
In the present invention, the test signal output step is a step of outputting right and left audio test signals including volume information to the left and right speakers of the stereo earphone. This step may be performed by the test signal generator described above. At this stage, the test signal may be directly transmitted to the speaker of the earphone, but it is preferable to pass through the audio output unit.
At this time, the audio test signal may include various sound quality information as well as direction information (information on the left speaker and the right speaker) and sound volume information as described in the device related invention. For example, as illustrated in FIG. 3B, the audio test signal is "output A audio data to the left speaker at a 10 dB magnitude" and "audio data A at the right speaker at 10 dB magnitude" So that they are delivered with a time difference.
In the test audio input step , the output audio of the left and right speakers is input to the microphone in the same interval and direction, and may be performed by the microphone and the output characteristic measuring unit. This step is to receive the test audio output from the left and right speakers positioned at the same condition for the microphone from the microphone.
Measuring the output characteristics of the right and left speakers from the input signals of the test audio outputted from the right and left speakers input by the microphone and temporarily storing the measured output characteristics, Lt; / RTI >
In this test audio input step and the output characteristic measurement step, for example, as shown in FIG. 3B, when the microphone receives the audio output "output as a 10 dB signal to the left speaker" And the audio output of the 10 dB signal by the right speaker is input to the microphone, and the output characteristic of "9 dB of audio output to the right speaker " is measured and temporarily stored.
The hearing aid input step receives the absolute value or the relative value of the left and right hearing of the user. As described above, the hearing ability of the user measured by the audiometry device is inputted automatically or manually. The inputted hearing information of the user is utilized in the correction value determination step.
The correction value determining step compares the output characteristics of the stored left and right speakers and determines a correction value so that the output of the right and left speakers coincides with the volume information obtained by correcting the left and right hearing of the user. In this step, a correction value for correcting the output of the left and right speakers is calculated so that the user can sense the same volume by considering the output characteristics of the left and right speakers and the left and right hearing power of the user.
The tuning step is a step of tuning the audio output section to correct the output of the left and right speakers according to the correction value determined above. The processes after the tuning step and the tuning step are the same as those described in the apparatus invention.
According to the method of correcting the output of the left and right speakers of the earphone of the present invention, when the output correction for the earphone selected by the user is completed, the audio data received and output by the storage medium or the network is corrected by the tuner So that it is possible to listen to high-quality audio with the left and right speaker volumes being equal. In the above example, only the volume is corrected, but it is also possible to compare and correct the sound quality of the left and right speakers according to a known sound quality measuring method.
Further, according to the method of correcting the output of the left and right speakers of the earphone of the present invention, it is possible to correct more precisely than the above-described example, for example, for every predetermined volume interval or to correct for every predetermined frequency interval.
To this end, the audio test signal is normally repeated at a predetermined volume interval in a range of volume permitted by the earphone, or repeated at a predetermined frequency interval in an audible frequency range, and the audio output unit is repeated for a predetermined volume or volume Tuned by frequency.
The output correction of the left and right speakers of the stereo earphone according to the present invention can be performed by a program recorded on a recording medium readable by a smart device such as a computer and executed by a computer. In addition, such a program may include a code that is coded in a computer language such as C, C ++, JAVA, or machine language in which a processor (CPU) of a smart device such as a computer can be read. The code may include a function code related to a function or the like that defines the functions described above, and includes a control code related to an execution procedure necessary for the processor of the smart device, such as a computer, to execute the functions described above according to a predetermined procedure You may. These codes may also include additional information necessary to enable the above described functions to be executed by a processor of a smart device such as a computer, or a memory reference related code to indicate which location (address) of the internal or external memory of the smart device, such as a computer, . The computer-readable recording medium on which the program is recorded may be, for example, ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical media storage, or the like.
Claims (7)
(A) a test signal generator for outputting left and right audio test signals including volume information to left or right speakers of the stereo earphone or headset at predetermined time intervals or according to a user's key signal;
(B) an output characteristic measuring unit for receiving the output audio of the right and left speakers from the microphone according to the audio test signal, measuring the output characteristic, and temporarily storing the measured output characteristic;
(C) a hearing-power input unit for receiving an absolute value or a relative value of the left and right hearing of the user;
(D) compares the output characteristics of the input left and right speakers to calculate the correction value so that the output of the left and right speakers coincides with the volume information obtained by correcting the left and right hearing of the user, and corrects the output of the left or right speaker And an operation correcting unit for tuning the audio output unit to correct the output of the left and right speakers of the stereo earphone and the headset to be optimized for the user.
Wherein the audio test signal is repeated at a predetermined frequency interval in an audible frequency range, and the output of the left and right speakers of the headset is optimized for a user.
(A) outputting a left and right audio test signal including volume information to left and right speakers of the stereo earphone or headset;
(B) a test audio input step of receiving the output audio of the left and right speakers from the microphone at the same interval and in the same direction;
(C) measuring an output characteristic of the left and right speakers from the input signal of the test audio outputted from the right and left speakers inputted through the microphone and temporarily storing the measured output characteristics;
(D) a hearing-impaired input step of receiving the absolute value or the relative value of the left and right hearing of the user;
(E) comparing the output characteristics of the stored left and right speakers to determine a correction value such that the output of the right and left speakers coincides with the volume information obtained by correcting the inputted right and left hearing of the user;
(F) a tuning step of tuning the audio output section to correct the output of the left and right speakers according to the correction value.
Wherein the audio test signal is repeated at a predetermined frequency interval in an audible frequency range, and wherein the output of the left and right speakers of the headset is optimized for a user.
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| US11617052B2 (en) | 2020-05-04 | 2023-03-28 | Min Joo Choi | Method and apparatus for optimization of binaural beat |
| CN112684333A (en) * | 2020-12-18 | 2021-04-20 | 歌尔光学科技有限公司 | Detection equipment for TWS earphone charging box |
| CN112684333B (en) * | 2020-12-18 | 2023-05-12 | 歌尔科技有限公司 | Detection equipment for TWS earphone charging box |
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