JP2010081523A - Mobile terminal, control method for the mobile terminal, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile terminal, control method of the mobile terminal, and program which cope with reduction in hearing ability, accompanying aging of a user. <P>SOLUTION: A mobile terminal is provided with a volume-adjusting means for correcting the frequency characteristics of an equalizer that emphasizes audio signal in a specific register, on the basis of volume control for audio output by an end user. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable terminal, a portable terminal control method, and a program.

With the spread of mobile terminals, the age group of users is expanding. Although there are no problems with hearing in the younger and middle-aged groups, the deterioration of hearing is noticeable for the elderly.
For this reason, attaching a hearing aid to a portable terminal or changing a frequency response characteristic is performed.

An example of a technique that takes measures against voice characteristics is described in Patent Documents 1 and 2.
The hearing aid adapter for a mobile phone disclosed in Patent Document 1 has an “input / output terminal for connection to a mobile phone and a length that separates the mobile phone and the hearing aid by a predetermined distance or more, and one end is connected to the input / output terminal. Connected cord, amplifier circuit connected to the other end of the cord, sound quality correction circuit for correcting the output of the amplifier circuit according to the characteristics of the hearing aid and the hearing type of the hearing aid, and the hearing aid can be heard in T mode And an induction coil for generating an induction magnetic field to operate as follows.

  According to this mobile phone hearing aid adapter, the signal output from the external input / output terminal of the mobile phone is connected to the sound quality correction circuit and the volume via the cord of a length necessary to separate the hearing aid from the mobile phone by an appropriate distance. Send to adjustment circuit. The sound quality correction circuit and the volume adjustment circuit correct the difference between the microphone mode and the T mode of the hearing aid and the hearing type of the hearing impaired person, and finally send a signal to the induction coil. The induction magnetic field generated by the induction coil is heard in the T mode of the hearing aid. At this time, noise is not generated because the distance from the mobile phone is long. On the other hand, the signal picked up by the built-in microphone is input to the external input / output terminal of the mobile phone.

  The telephone device disclosed in Patent Document 2 has a “speaker for reproducing sound and digital signal processing means for digitally processing the reproduced sound, and the signal processing means includes an equalizer having a certain frequency response characteristic. The telephone device includes a means for generating control information including at least the measured background noise intensity and frequency spectrum representing the operating state of the telephone device, and an equal digital wave number response based on the control information. A means for changing the characteristics, wherein the frequency response characteristics are changed by changing the gain without changing the center frequency and bandwidth, changing the center frequency without changing the gain and bandwidth, and the center frequency. Means for including at least one of changing the bandwidth without changing the gain, and operates as follows:

This telephone device improves sound clarity regardless of speaker structure and sound leakage between the speaker and the ear, responds well to the special requirements of mobile phones, (bacground noise) and the volume of the phone set by the user, and the balance between the quality of the sound to be heard and the intelligibility of the spoken voice is applied, and the equalization is adapted to the auxiliary device of the mobile phone. You can do that.
JP-A-10-174194 Japanese Patent No. 3609557

However, in the techniques described in Patent Documents 1 and 2 described above, the problem of a decrease in listening ability with aging is not considered.
Then, the problem of this invention is providing the portable terminal corresponding to the fall of the listening capability accompanying a user's aging, the control method of a portable terminal, and a program.

  The portable terminal of the present invention is characterized by comprising a volume adjusting means for correcting the frequency characteristics of an equalizer that emphasizes an audio signal in a specific sound range based on a volume operation for an audio output by an end user.

  The mobile terminal control method of the present invention is characterized by correcting the frequency characteristic of an equalizer that emphasizes a sound signal in a specific sound range based on a volume operation for sound output by an end user.

  The program according to the present invention includes a computer, a procedure in which the analysis means performs frequency analysis of the sound signal to the speaker, a procedure in which the equalizer emphasizes a sound signal in a specific range, and a correction information correction means in which the volume operation by the end user is performed. And correcting the frequency characteristic of the equalizer based on the correction information from the correction information correcting means by executing a procedure for correcting the frequency characteristic information to the equalizer based on the frequency characteristic information by the analyzing means It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, provision of the portable terminal corresponding to the fall of the listening capability accompanying a user's aging, the control method of a portable terminal, and a program is realizable.

<Features>
The present invention is a volume adjustment function in a cellular phone device, and provides a method for a listener to control the volume in consideration of the difference in ear sensitivity according to the frequency band of the sound. To do. That is, in a mobile terminal such as a mobile phone device, the volume is controlled by the frequency band as a volume control means in order to make it easier to hear the sound.

<Configuration>
FIG. 1 is a block diagram showing an embodiment of a portable terminal according to the present invention.
In this embodiment, the case of a mobile phone device as a mobile terminal will be described.
Referring to FIG. 1, the configuration of the present invention includes a frequency analysis unit 10 as an analysis unit, a monitor (sampling) function 11, a correction information correction unit 13 as a correction information correction unit, and storage in a mobile phone device. Volume adjustment means 16 comprising a storage section 14 as means and a control section 15 as control means, CODEC (coder and decoder) 2, equalizer 3, and DAC (digital-to-) -analog converter (digital-analog converter) 4, an AMP (amplifier) 5, a speaker 6, and a key 7.
The control unit 15 learns to call the correction information for each call partner and correct the frequency characteristics of the equalizer 3 by referring to the telephone number recorded in advance and specifying the call partner identification unit 15a. Learning means 15b may be included. Note that the partner identification unit 15a and the learning unit 15b are both configured by software.

In FIG. 1, a sound source 1 is digital sound source data such as sound in a mobile phone device (sound from a microphone (not shown)).
The CODEC 2 is means for converting audio data into PCM (pulse code modulation) after being compressed.
The equalizer 3 is means for emphasizing a sound signal in a specific sound range.
The DAC 4 is means for converting a digital signal digitized by the PCM into an analog signal.
AMP5 is means for amplifying the analog signal until the speaker SP6 is driven.
The speaker SP6 is means for changing an electric signal to an elastic wave.
Key 7 is a means used for volume operation (high / low) and is an operation button.

The volume operation UP / DWN 8 is volume operation signal data.
The frequency characteristic information 9 is frequency characteristic data of the sound currently output from the speaker SP6.
The frequency analysis unit 10 is means for analyzing the frequency characteristics of the sound currently output from the speaker SP6.
The monitor (sampling) 11 is a means for sampling digital data currently output from the speaker SP6.
The correction information 12 is data indicating a frequency band to be emphasized by the equalizer 3.
The correction information correction unit 13 is a means for correcting the correction information 12 based on the result of the frequency information 9.
The storage unit 14 is a means for storing correction information 12 to be given to the equalizer 3, and examples thereof include a hard disk drive (HDD) and a flash memory.
The control unit 15 is a means for effectively controlling each means in the sound volume adjusting means 16, and may be a microcomputer, for example.

  2A to 2D are examples of characteristic diagrams of the mobile terminal shown in FIG. That is, FIG. 2A is a result of the frequency analysis unit 10 of the mobile terminal shown in FIG. 1, and is an example of the output frequency characteristic information 9. FIG. 2B is an example of the initial value of the correction information 12 of the mobile terminal shown in FIG. FIG. 2 (c) is an example in which the high frequency range is generally difficult to hear due to aging. FIG. 2D is a modification of the correction of FIG. 2A which is an example of the frequency characteristic information of the mobile terminal shown in FIG. 1 and FIG. 2B which is an example of the correction information 12 of FIG. It is an example of the result of the correction information correction 13 of the portable terminal shown in FIG.

<Operation>
The operation of the portable terminal will be described with reference to FIG.
In the mobile phone device, the PCM data obtained by converting the digital data of the sound source 1 by the CODEC 2 is emphasized according to the frequency by the equalizer 3, converted to an analog signal by the DAC 4, amplified by the AMP 5, and then from the speaker SP 6. Output as sound. In parallel with this, the control unit 15 constituting the volume adjusting means 16 samples the output of the equalizer 3 by the monitor 11 and causes the frequency analysis unit 10 to always collect the result in the frequency characteristic information 9. At this time, when the volume operation is performed from the end user using Key 7 and the volume UP / DWN 8 information is received, the correction information correction unit 13 corrects the information of the correction information 12 based on the information of the frequency characteristic 9. The correction information is updated and given to the equalizer 3 to emphasize the sound range of a specific frequency band.

<Program and storage medium>
The portable terminal of the present invention described above is realized by a program that causes a computer to execute processing. Examples of the computer include general-purpose computers such as personal computers and workstations, but the present invention is not limited to this.
FIG. 3 is a flowchart showing an embodiment of the program of the portable terminal according to the present invention.
FIG. 4 is a flowchart showing another embodiment of the portable terminal program according to the present invention.

That is, as in the flowchart shown in FIG.
(1) A procedure in which the analysis means performs frequency analysis of the audio signal to the speaker (FIG. 3: step S1),
(2) A procedure in which the equalizer emphasizes an audio signal in a specific range (FIG. 3: step S2),
(3) A procedure in which the correction information correction means corrects the frequency characteristic information to the equalizer based on the volume operation by the end user and the frequency characteristic information by the analysis means (FIG. 3: step S3)
By running
A program for controlling the frequency characteristics of the equalizer based on the correction information from the correction information correcting means is mentioned.

Furthermore, in addition to the above configuration (steps S1 to S3: steps S11 to S13 in FIGS. 3 and 4),
(4) A procedure (step S14) in which the partner identification means identifies the partner of the call by referring to the telephone number recorded in advance.
(5) A procedure (step SS15) in which the learning means learns to call correction information for each opponent and correct the frequency characteristics of the equalizer (step SS15),
May be executed.

Thus, the apparatus of the present invention can be realized anywhere as long as there is a computer environment capable of executing the program.
Such a program may be stored in a computer-readable storage medium.

  Here, examples of the storage medium include computer-readable storage media such as CD-ROM (Compact Disc Read Only Memory), flexible disk (FD), and CD-R (CD Recordable), flash memory, and RAM (Random Examples include semiconductor memories such as Access Memory (ROM), ROM (Read Only Memory), and FeRAM (ferroelectric memory), and HDDs.

  The above-described embodiment shows an example of a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications can be made without departing from the scope of the invention. is there.

Here, differences between the above-described Patent Document 1 and the present application will be described.
The invention described in Patent Document 1 amplifies the volume in an analog manner, and is a technology that is completely different from the technology of the present application.
Although the invention described in Patent Document 2 is similar in that it focuses on the frequency band of the sound during a call and analyzes the sound and uses an equalizer to change the amount of amplification according to the frequency band. The main theme is noise removal, such as detecting when the person is not speaking and analyzing background noise and lowering the volume of the noise frequency band, which is different from the technique of the present application.
Therefore, the invention described in Patent Documents 1 and 2 and the present invention have different technologies.

It is a block diagram which shows one Embodiment of the portable terminal which concerns on this invention. (A)-(d) is an example of the characteristic view of the portable terminal shown in FIG. It is a flowchart which shows one Embodiment of the program of the portable terminal which concerns on this invention. It is a flowchart which shows other embodiment of the program of the portable terminal which concerns on this invention.

Explanation of symbols

10 Frequency Analysis Unit 11 Monitor Function 12 CODEC
13 Correction information correction unit 14 Storage unit 15 Control unit 16 Volume adjustment means

Claims (7)

  A portable terminal comprising: a volume adjusting unit that corrects a frequency characteristic of an equalizer that emphasizes an audio signal in a specific range based on a volume operation with respect to audio output by an end user. The volume adjusting means is
An analysis means for analyzing the frequency of the audio signal to the speaker;
The equalizer;
Correction information correction means for correcting the frequency characteristic information to the equalizer based on the volume operation by the end user and the frequency characteristic information by the analysis means;
The mobile terminal according to claim 1, further comprising a control unit that controls a frequency characteristic of the equalizer based on correction information from the correction information correction unit.   The portable terminal according to claim 2, further comprising a storage unit that stores the correction information. A partner identifying means for identifying a partner of a call by referring to a pre-recorded telephone number;
Learning means for learning to correct the frequency characteristics of the equalizer by calling correction information for each partner;
The mobile terminal according to claim 3, further comprising:   5. The portable terminal according to claim 3, further comprising monitor means for monitoring an audio signal to the speaker.   A method for controlling a portable terminal, comprising correcting an equalizer frequency characteristic for emphasizing an audio signal in a specific range based on a volume operation with respect to audio output by an end user. On the computer,
A procedure in which the analyzing means performs frequency analysis of the audio signal to the speaker;
The procedure for the equalizer to emphasize the audio signal in a specific range,
A correction information correction means for correcting the frequency characteristic information to the equalizer based on the volume operation by the end user and the frequency characteristic information by the analysis means;
By running
A program for controlling a frequency characteristic of the equalizer based on correction information from the correction information correcting means.

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