KR20120137657A - Terminal capable of outputing sound and sound output method therefor - Google Patents

Terminal capable of outputing sound and sound output method therefor Download PDF

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KR20120137657A
KR20120137657A KR1020110056631A KR20110056631A KR20120137657A KR 20120137657 A KR20120137657 A KR 20120137657A KR 1020110056631 A KR1020110056631 A KR 1020110056631A KR 20110056631 A KR20110056631 A KR 20110056631A KR 20120137657 A KR20120137657 A KR 20120137657A
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sound
output
signal level
frequency
signal
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KR1020110056631A
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Korean (ko)
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박성수
정구익
이상신
김동건
유재황
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에스케이텔레콤 주식회사
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Publication of KR20120137657A publication Critical patent/KR20120137657A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/06—Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
    • G10L21/10—Transforming into visible information
    • G10L21/14—Transforming into visible information by displaying frequency domain information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing

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  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

PURPOSE: A terminal capable of acoustic output and its output method is provided to offer optimal acoustic by adjusting the signal level of acoustic output according to a user's hearing ability. CONSTITUTION: A signal storage part(110) classifies signal levels into each frequency within the audible range and stores signals corresponding to the classified signal level. A hearing profile generator(120) generates a user's hearing profile based on the user's response on the signals. An equalizer(140) adjusts the output of the acoustic based on the hearing profile. The signal storage part classifies the frequency and the signal level based on a standard hearing curve of ISO(International Standards Organization), 266:2003. [Reference numerals] (110) Dial tone storage; (120) Hearing profile generator; (130) Dial tone output unit; (142) Lowest signal level detector; (144) Increase value calculator for each step

Description

Terminal Capable of Outputing Sound and Sound Output Method therefor}

An embodiment of the present invention relates to a terminal capable of sound output and a sound output method thereof. More specifically, the user can measure the degree of audible hearing, and according to the result, corrects the signal level according to the set frequency of the output sound to be most suitable for the user's hearing condition, or uses the amplification degree of the output sound. The present invention relates to a terminal capable of providing an optimal sound to a user by adaptively correcting according to a state, and a sound output method thereof.

The contents described in this section merely provide background information on the embodiment of the present invention and do not constitute the prior art.

Generally, portable electronic devices such as PDAs (Personal Digital Assistants), Portable Multimedia Players (PMPs), and MPEG Audio Layer-3 (MP3) players, portable communication devices such as mobile phones, smart phones, etc. Electronic devices capable of reproducing sound or voice, such as audio and the like, have sufficient sound levels and amplification functions that can damage a user's hearing.

In particular, not only portable electronic devices such as PDAs, PMPs, MP3 players, etc., but also mobile communication devices such as mobile phones and smartphones (hereinafter, collectively referred to as 'terminals') deliver sound directly to the user's ears through earphones. In general, when a user of such a terminal performs a sound or voice call through the terminal, the user may increase the recognition rate of the output sound or voice by increasing the volume in consideration of the surrounding noise environment. .

At this time, in general, the terminal sets amplification rate of the sound or the voice constantly, and amplifies the sound or the voice uniformly by the corresponding step change according to the step change controlled by the user.

However, when amplifying sound or voice uniformly according to the step change, the sound or voice may be suddenly amplified and transmitted, depending on the user, and may be amplified and delivered to an unnecessary frequency band. Even in such a case, the user recognizes that the recognition rate is increased according to the step change, but if it is repeated for a long time, there is a problem of causing the hearing loss by lowering the user's hearing.

An embodiment of the present invention has been devised to solve the above-described problem, and measures a user's audible degree and corrects a signal level according to a set frequency of a sound output according to the result to be most suitable for a user's hearing state. It is an object of the present invention to provide a terminal capable of providing an optimal sound to a user by adaptively correcting an amplification degree for an output sound according to a hearing state of use, and a sound output method thereof.

A terminal capable of sound output according to an embodiment of the present invention for achieving the above object, a signal sound storage unit for classifying a plurality of signal levels for each frequency within the audible range, and storing the signal sound corresponding to the classified signal levels ; A hearing profile generator for generating a hearing profile of the user based on the user's response to the output tone; And an equalizer for correcting the output of the sound output based on the generated hearing profile.

Here, the tone storage unit may classify the frequency and the signal level based on the standard sound curve of the Phon step of the International Standards Organization (ISO) 266: 2003.

The terminal according to the embodiment of the present invention sequentially increases from the lowest signal level of each of the classified signal levels for at least one frequency of each of the classified frequencies and sequentially outputs the corresponding signal tones for a predetermined time. It may further include a beep output unit.

The equalizer may further include a lower limit signal level detector for detecting an audible lower limit signal level of a frequency corresponding to a set frequency of sound from the generated hearing profile; And a stepwise increment calculation unit calculating a stepwise increase value at the set frequency of the sound based on a difference between the maximum signal level output at the set frequency of the sound and the detected audible lower limit signal level.

In this case, the equalizer may correct the sound output based on the calculated signal level increase value.

According to another aspect of the present invention, a terminal capable of outputting a sound includes a signal sound storage unit for classifying a plurality of signal levels for each frequency within an audible range and storing a signal sound corresponding to the classified signal levels. ; A hearing profile generator for generating a hearing profile of the user based on the user's response to the output tone; An amplification information detector for detecting amplification information set for the output sound; And an equalizer for correcting the output of the sound output based on the generated hearing profile and the detected amplification information.

The aforementioned terminal further includes a beep output unit for sequentially increasing the signal tones corresponding to at least one of each of the classified frequencies from the lowest signal level among the classified signal levels and sequentially outputting corresponding beeps for a predetermined time period. can do.

Here, the equalizer may include a lower limit signal level detector for detecting an audible lower limit signal level from the generated hearing profile; And a step increment calculation unit for calculating an increase value for each amplification step of the sound based on a difference between the maximum amplification level of the sound and the detected audible lower limit signal level.

According to an embodiment of the present invention, a sound output method of a terminal classifies a signal level of a plurality of stages for each frequency within an audible range based on a standard listening curve, and corresponds to a classified signal level. Storing the; Outputting the at least one frequency of each of the classified frequencies sequentially increasing from a beep corresponding to the lowest signal level of the classified signal levels; Generating a hearing profile of the user based on the user's response to the output tone; And correcting an output of the sound output based on the generated hearing profile.

The tone storage step may store the tone in response to the standard sound curve of the Phon stage of ISO 266: 2003.

In addition, the above-described sound output method of the terminal, detecting the audible lower limit signal level of the frequency corresponding to the set frequency of the sound from the generated hearing profile; And calculating the stepwise increment at the set frequency of the sound based on the difference between the maximum signal level output at the set frequency of the sound and the detected audible lower limit signal level. In this case, in the step of correcting the output of the sound, it is preferable to correct the sound output at the set frequency of the sound based on the incremental step value.

According to another aspect of the present invention, there is provided a sound output method of a terminal, which classifies a plurality of signal levels for each frequency within an audible range based on a standard listening curve, and corresponds to the classified signal levels. Storing the; Outputting the at least one frequency of each of the classified frequencies sequentially increasing from a beep corresponding to the lowest signal level of the classified signal levels; Generating a hearing profile of the user based on the user's response to the output tone; Detecting amplification information set for the output sound; And correcting an output of sound output based on the generated hearing profile and the detected amplification information.

In the amplification information detecting step, the level of the output sound may be detected with respect to the maximum amplification level and the maximum amplification level of the terminal.

In addition, the above-described sound output method of the terminal, the method comprising: detecting a low audible lower limit signal level from the generated hearing profile; And calculating a stepped amplification increase value between the output sound and the maximum amplification level, based on the difference between the maximum amplification level of the terminal and the detected audible lower limit signal level.

According to an embodiment of the present invention, by providing a user with optimal sound by measuring the degree of audible hearing of the user and correcting the signal level according to the set frequency of the sound output according to the result best suited to the user's hearing state. It becomes possible.

In addition, according to another embodiment of the present invention, it is possible to provide an optimal sound to the user by adaptively correcting the amplification degree for the output sound according to the hearing condition of the use.

1 is a view schematically showing a terminal capable of sound output according to an embodiment of the present invention.
2 is a diagram illustrating a standard acoustic curve used in the practice of the present invention.
3 is a diagram schematically illustrating a terminal capable of outputting sound according to another exemplary embodiment of the present invention.
4 is a flowchart illustrating a sound output method according to an exemplary embodiment of the present invention.
5 is a flowchart illustrating a sound output method according to another exemplary embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a terminal capable of sound output and the sound output method according to an embodiment of the present invention.

1 is a view schematically showing a terminal capable of sound output according to an embodiment of the present invention.

Referring to FIG. 1, a terminal capable of outputting sound may include a signal sound storage unit 110, a hearing profile generator 120, a signal sound output unit 130, and an equalizer 140. In this case, the equalizer 140 may include a lower limit signal level detector 142 and a stepwise increment calculator 144.

The signal storage unit 110 classifies a plurality of signal levels for each frequency within an audible range of a human, and stores a signal sound corresponding to each of the classified frequencies and signal levels.

In general, the frequency range of sound waves that can be felt by the human ear is called an audible frequency. The audible range of a normal person is usually in the frequency range of 16 Hz to 20 kHz. At this time, the signal storage unit 110 may classify the frequency and the signal level based on the standard sound curve of the phon step of the International Standards Organization (ISO) 266: 2003 based on the normal person, and may store the corresponding sound signal. .

2 is a diagram illustrating a standard acoustic curve used in the practice of the present invention.

According to the ISO 266: 2003 standard listening curve, the average characteristic of a person is good sensitivity to hearing small sounds centered on the 3.5 kHz frequency, and relatively poor on sounds higher or lower than the 3.5 kHz frequency. . That is, because the sensitivity of hearing is good at 3.5 kHz, the sound can be heard without increasing the loudness, and the sound must be loud because the sensitivity is low for sounds higher or lower than 3.5 kHz. The average hearing characteristics of a person with respect to 20, 40, 60, 80, and 100 phones are shown in FIG. 2. Here, a phon is a unit of loudness (volume = loudness level) that a human can feel, and is equal to a sound press level which is a physical strength of the sound. The human ear has a frequency characteristic, and even if the sound of the same physical volume is heard, the sound volume varies according to the frequency. At this time, the intensity of the sound of 1 kHz that is heard at the same size as the corresponding sound is expressed in units of phones. The signal storage unit 110 may classify signal levels of various stages for each frequency within an audible range of a human being based on the ISO 266: 2003 standard listening curve and store the corresponding signal sounds.

However, these ISO 266: 2003 standard listening curves represent the average listening characteristics for different people, so they are modified by the influence of various personal acoustic environments, such as innate factors, diseases, working conditions, and music listening habits. It may be inadequate to provide sound or speech based on the ISO 266: 2003 standard listening curve for persons with hearing characteristics.

In the embodiment of the present invention, in order to provide an optimal sound or voice to the person having the modified hearing characteristics, the hearing profile generator 120 generates a hearing profile of the user. In this case, the beep output unit 130, for the beep corresponding to each frequency and signal level stored in the beep storage unit 110, from the lowest signal level of the signal level corresponding to any frequency corresponding to the corresponding sound The hearing profile generator 120 may generate the hearing profile of the user based on the user's response to the tone signal output through the tone output unit 130. At this time, the beep output unit 130 may be implemented to output a beep only for a section capable of human hearing according to a standard listening curve. For example, 10 dB, 20 dB,... At a frequency of 31.25 kHz away from the normal human hearing range. It may be meaningless to classify signal levels, such as 70 dB, so that a beep in a frequency range far from the audible range may be omitted. However, since the range of the audible frequency may be out of the range of the general audible frequency depending on the user, a range of a predetermined range (for example, a lower limit of -10% to an upper limit of + 10%) with respect to the general audio frequency range is taken into consideration. It is preferable to be implemented so as to extend the signal to output a beep.

On the other hand, for sound output according to an embodiment of the present invention, after receiving the PCM (Pulse Code Modulation) data decoded in the signal processing process, the operation for adjusting the quality of the voice may be performed. For example, the AGC (Auto Gain Control) function eliminates residual noise present in the PCM signal, and later eliminates echo noise. In addition, the noise elimination filtering identifies the main voice or sound and the surrounding voice or sound to extract the pure main voice or sound.

The hearing profile generator 120 may generate a hearing profile by separating the results of each ear of the user. For example, assuming that the user first responded to a 40 dB beep in the 125 Hz band for the right ear and the first responded to a 60 dB beep in the 130 Hz band for the left ear, the hearing profile is first_ [right] [125 Hz] [40 dB]. _ [left] [130Hz] [60dB] can be generated separately. In this way, the user's first signal level for each frequency can be generated as a hearing profile. The hearing profile described here is merely an example, and the form is not limited to the method described.

The equalizer 140 corrects the sound or voice output through the speaker or the earphone of the terminal based on the hearing profile of the user generated by the hearing profile generator 120.

To this end, the lower limit signal level detector 142 detects audible lower limit signal level of a frequency corresponding to a set frequency of a sound output through the terminal from the hearing profile of the user generated by the hearing profile generator 120. . For example, if the set frequency of the sound output through the terminal is 1000Hz, the lower limit signal level detection unit 142 of the user's left ear and right for the 1000Hz of the user's hearing profile generated by the hearing profile generator 120 The lower limit signal level of each ear can be detected.

The stepped increment calculator 144 calculates the stepped increment at the set frequency of the sound based on the difference between the maximum signal level output at the set frequency of the sound and the detected audible lower limit signal level. For example, if the 10dB is set as the lowest signal level for the sound output at 1000Hz, but the user's audible lower limit signal level for 1000Hz generated by the hearing profile generator 120 is generated at 30dB, step increment calculation The unit 144 determines that the hearing loss has occurred by 20 dB to the user, and performs sound correction thereto. At this time, the step-up increment calculation unit 144 classifies the signal level in five stages for the frequency of the output sound 1000Hz, assuming that the maximum signal level that can be output at 1000Hz is 100dB, step-up increment calculation unit 144 ) Can be calculated by dividing the step increments set in 5 steps between 10dB and 100dB at 1000Hz and in 5 steps between 30dB and 100dB. At this time, assuming that the user can recognize a signal level of 80 dB with respect to the maximum output signal level of 100 dB of the terminal at a frequency of 1000 Hz, the stepped increment calculator 144 is a range of audible signal levels of the user at a frequency of 1000 Hz. It is also possible to calculate the step increment by classifying the signal level of 30dB to 80dB into five levels. As such, the step-wise increment calculator 144 may calculate the step-by-step increase value for the range of the user's audible signal level based on the step-by-step increase value for the range of the signal level output by the terminal.

The equalizer 140 corrects the sound output based on the step increment calculated by the step increment calculator 144. That is, the equalizer 140 may determine at which stage the position of the output sound is located at the corresponding frequency, and may correct the sound based on the determined position and the calculated step increment. For example, if the lowest signal level that can be output at a frequency of 1000 Hz is 20 dB, the maximum signal level that can be output is 100 dB, it is classified into four signal levels from 20 dB to 100 dB, and the current acoustic signal level is 80 dB, the user's hearing Assuming that the lower limit signal level detected from the profile is 40 dB, that is, the lowest signal level at which the user can hear at a frequency of 1000 Hz is 40 dB, the step-up increment calculator 144 provides four signal levels for a signal level between 40 dB and 100 dB. Can be calculated as 15dB. At this time, the equalizer 140 may determine that the position of the output sound corresponds to the third stage between 20dB and 100dB, the step increase value 15dB calculated by the step increment calculator 144 and the user's audible lower limit. The sound signal level output based on the signal level 40dB can be corrected to 85dB. However, the output method of the sound signal is not limited to the described method, and there may be various modifications.

3 is a diagram schematically illustrating a terminal capable of outputting sound according to another exemplary embodiment of the present invention.

Referring to FIG. 3, the terminal capable of sound output may include a signal sound storage unit 310, a hearing profile generator 320, a signal sound output unit 330, an amplification information detector 340, and an equalizer 350. have. In this case, the equalizer 350 may include a lower limit signal level detector 352 and a stepwise increase value calculator 354. Here, the configuration and operation of the sound signal storage unit 310, the hearing profile generator 320 and the sound signal output unit 330 are the sound signal storage unit 110, the hearing profile generator 120, the signal sound output unit ( Since it is similar to the configuration and operation of 130, detailed description thereof will be omitted.

The amplification information detector 340 detects an amplification degree set for the output sound. For example, the amplification information detection unit 340 determines the maximum step that can be adjusted by the volume control unit (not shown) of the terminal and the amplification increase value for each step, and at any stage of the maximum step where the output sound can be adjusted. It is possible to determine whether the corresponding value is detected by the degree of amplification. In this case, the amplification increase value may be an amplification level change value according to a current change value or a voltage change value, and the amplification level of the output sound may be calculated based on the detected amplification degree and the amplification increase value. However, the method of detecting the degree of amplification is not limited to the described method, and the degree of amplification can be detected by various modified methods.

The equalizer 350 corrects the sound or voice output through the speaker or the earphone of the terminal based on the hearing profile of the user generated by the hearing profile generator 320.

To this end, the lower limit signal level detector 352 detects the lower limit signal level that is audible from the hearing profile of the user generated by the hearing profile generator 320. At this time, the frequency of the sound output through the terminal can be regarded as a constant, accordingly, the frequency of the lower limit signal level detected from the hearing profile is also considered to be constant.

The step-wise increase calculation unit 354 calculates the increase value for each step of amplification of the sound based on the difference between the maximum amplification level of the sound and the detected audible lower limit signal level. For example, the amplification level of the sound may be increased in 10 steps of 10 dB to 10 dB in 10 steps. Assuming that the user's audible lower limit signal level is 30 dB, the step-level increase calculation unit 350 corresponds to the user's hearing profile. 30dB can be corrected to the lowest amplification level, and the increase of each sound amplification step can be calculated as 8dB for 10 amplification steps up to 110dB. That is, the step-wise increment calculation unit 354 may calculate the increase value for each amplification step for the range of audible signal levels of the user based on the increase value for each amplification step for the range of amplifiable signal levels of the terminal.

The equalizer 350 corrects the sound output based on the step increment calculated by the step increment calculator 354. That is, the equalizer 350 determines in which stage the position of the output sound is located in the entire amplification step, and may correct the sound based on the determined position and the calculated step increment. For example, if the position of the output sound in this case is 60dB, since the corresponding position is the fifth step of the total 10 steps, the equalizer 350 may correct the output of the sound to 70dB accordingly.

4 is a flowchart illustrating a sound output method according to an exemplary embodiment of the present invention.

Referring to FIGS. 1 and 4, the signal storage unit 110 classifies frequencies within a human audible range into multiple stages based on a standard listening curve, and classifies and classifies a plurality of signal levels for each classified frequency. The signal sound corresponding to each frequency and signal level is stored (S410).

The beeper output unit 130, for the beeper corresponding to each frequency and the signal level stored in the beeper storage unit 110, from the lowest signal level among the signal levels corresponding to a certain frequency at a predetermined interval therefrom Outputs sequentially for a predetermined time (S420).

The hearing profile generator 120 generates a hearing profile of the user based on the user's response to the output tone (S430). At this time, the hearing profile of the user may be generated for each of the left ear and the right ear.

The lower limit signal level detector 142 detects an audible lower limit level of a frequency corresponding to a set frequency of the output sound from the hearing profile generated by the hearing profile generator 120 (S440).

The stepwise increment calculator 144 calculates the stepwise increment at the set frequency of the sound based on the difference between the maximum signal level output at the set frequency of the sound and the detected audible lower limit signal level (S450).

The equalizer 140 corrects the signal level of the output sound based on the stepwise increase value calculated as described above (S460).

5 is a flowchart illustrating a sound output method according to another exemplary embodiment of the present invention.

Referring to FIGS. 3 and 5, the signal storage unit 310 classifies frequencies within a human audible range into multiple stages based on a standard listening curve, and classifies and classifies a plurality of signal levels for each classified frequency. The signal sound corresponding to each frequency and signal level is stored (S510).

The beep output unit 330 may be configured to generate a beep corresponding to each frequency and signal level stored in the beep storage unit 310 from the lowest signal level among the signal levels corresponding to an arbitrary frequency at regular intervals. Outputs sequentially for a predetermined time (S520).

The hearing profile generator 320 generates a hearing profile of the user based on the user's response to the output tone (S530).

The amplification information detector 340 detects an amplification degree set for the output sound (S540). For example, the amplification information detection unit 340 determines the maximum step that can be adjusted by the volume control of the terminal and the amplification increase value for each step, and determines which of the maximum steps that the output sound corresponds to is adjustable and the value thereof. Can be detected to the extent of amplification.

The lower limit signal level detection unit 352 detects a lower hearing acceptable level from the hearing profile generated by the hearing profile generator 120 (S550). In this case, it is assumed that the frequency corresponding to the audible lower limit level is constant.

The step-wise increase calculation unit 354 calculates an increase value for each step of amplification of the sound based on the difference between the maximum amplification level of the sound and the detected audible lower limit signal level (S560).

The equalizer 350 corrects the signal level of the output sound based on the stepwise increase value calculated as described above (S570).

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. It should be noted that the embodiments disclosed in the present invention are not intended to limit the scope of the present invention and are not intended to limit the scope of the present invention. Therefore, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the same shall be construed as being included in the scope of the present invention.

As described above, an embodiment of the present invention measures a user's hearing audible and corrects a signal level according to a set frequency of a sound output according to the result so as to best fit a user's hearing state, It is a very useful invention to generate an effect that can provide the optimum sound to the user by adaptively correcting the degree of amplification according to the hearing condition of use.

110, 310: Beep storage unit
120, 320: hearing profile generation unit
130, 330: beep output
140, 350: equalizer
340: amplification information detector
142, 352: lower limit signal level detector
144, 354: step increment calculation unit

Claims (14)

In the terminal capable of sound output,
A signal sound storage unit for classifying a plurality of signal levels for each frequency within an audible range and storing a signal sound corresponding to each of the classified signal levels;
A hearing profile generator configured to generate a hearing profile of the user based on a response of the user to the output tone; And
An equalizer for correcting the output of the sound output based on the generated hearing profile
And a second terminal. The method of claim 1,
The beep storage unit,
And classifying the frequency and the signal level based on a standard listening curve of Phon according to International Standards Organization (ISO) 266: 2003. The method of claim 1,
A beep output unit that sequentially increases from the lowest signal level of each of the signal levels classified for at least one frequency of each of the classified frequencies and outputs a corresponding tone for a predetermined time.
The terminal further comprises. The method of claim 1,
The equalizer is,
A lower limit signal level detector for detecting an audible lower limit signal level of a frequency corresponding to a set frequency of the sound from the generated hearing profile; And
A stepwise increment calculation unit for calculating a stepwise increase value at the set frequency of the sound based on a difference between the maximum signal level output at the set frequency of the sound and the detected audible lower limit signal level;
And a second terminal. 5. The method of claim 4,
The equalizer is,
And correcting the sound output based on the calculated signal level increase value. In the terminal capable of sound output,
A signal sound storage unit for classifying a plurality of signal levels for each frequency within an audible range and storing a signal sound corresponding to each of the classified signal levels;
A hearing profile generator configured to generate a hearing profile of the user based on a response of the user to the output tone;
An amplification information detector for detecting amplification information set for the output sound; And
An equalizer for correcting the output of the sound output based on the generated hearing profile and the detected amplification information
And a second terminal. The method according to claim 6,
A beep output unit that sequentially increases the signal tones corresponding to at least one of each of the classified frequencies from the lowest signal level of each of the classified signal levels, and sequentially outputs a corresponding tone for a predetermined time.
The terminal further comprises. The method according to claim 6,
The equalizer is,
A lower limit signal level detector for detecting an audible lower limit signal level from the generated hearing profile; And
A step increment calculation unit for calculating an increase value for each amplification step of the sound based on a difference between the maximum amplification level of the sound and the detected audible lower limit signal level;
And a second terminal. In the sound output method of the terminal,
Classifying a plurality of signal levels for each frequency within an audible range based on a standard listening curve, and storing a signal sound corresponding to each of the classified signal levels;
Outputting at least one frequency of each of the classified frequencies sequentially increasing from a beep corresponding to the lowest signal level of the classified signal levels;
Generating a hearing profile of the user based on the user's response to the output tone; And
Correcting the output of the sound output based on the generated hearing profile
Sound output method of a terminal comprising a. The method of claim 9,
The beep storage step,
The sound output method of the terminal, characterized in that for storing the signal sound corresponding to the standard sound curve of the Phon according to ISO 266: 2003. The method of claim 9,
Detecting an audible lower limit signal level of a frequency corresponding to a set frequency of the sound from the generated hearing profile; And
Calculating a stepwise increment at the set frequency of the sound based on the difference between the maximum signal level output at the set frequency of the sound and the detected audible lower limit signal level.
Further comprising, and correcting the output of the sound,
And correcting the sound output at the set frequency of the sound based on the stepwise increment. In the sound output method of the terminal,
Classifying a plurality of signal levels for each frequency within an audible range based on a standard listening curve, and storing a signal sound corresponding to each of the classified signal levels;
Outputting at least one frequency of each of the classified frequencies sequentially increasing from a beep corresponding to the lowest signal level of the classified signal levels;
Generating a hearing profile of the user based on the user's response to the output tone;
Detecting amplification information set for the output sound; And
Correcting the output of the sound output based on the generated hearing profile and the detected amplification information.
Sound output method of a terminal comprising a. 13. The method of claim 12,
The amplification information detection step,
And detecting the level of the sound to be output with respect to the maximum amplification level of the terminal and the step up to the maximum amplification level. 13. The method of claim 12,
Detecting audible lower limit signal level from the generated hearing profile; And
Calculating a stepwise amplification increase value between the output sound and the maximum amplification level based on the difference between the maximum amplification level of the terminal and the detected audible lower limit signal level.
Sound output method of the terminal further comprising.
KR1020110056631A 2011-06-13 2011-06-13 Terminal capable of outputing sound and sound output method therefor KR20120137657A (en)

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