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JP2017069925

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DESCRIPTION JP2017069925
Abstract: The present invention provides an audio reproduction apparatus that allows a user to
preferably adjust the volume when the output destination of an audio signal can be switched
between a built-in speaker and an external audio output device. An audio reproduction apparatus
includes an internal speaker, an external output unit to which an external audio output device
can be connected, a volume operation unit for a user to operate a volume of an audio signal, and
a user operation of the volume operation unit. Accordingly, volume adjustment means for
performing an audio adjustment process for adjusting the volume of the audio signal, the output
destination of the audio signal, and the external output when the external audio output device is
connected to the external output means Switching means for switching to the means, and
switching to the built-in speaker when the external audio output device is not connected to the
external output means, and the volume adjusting means is configured to adjust the audio signal
in the volume adjusting process. Make different volume adjustments depending on the output
destination. [Selected figure] Figure 1
Audio reproduction apparatus, audio reproduction method thereof, and computer-executable
program
[0001]
The present invention relates to an audio reproduction device, an audio reproduction method
thereof, and a computer-executable program.
[0002]
09-05-2019
1
In recent years, mobile terminal devices such as smartphones and mobile phones are becoming
multifunctional, and many devices can play music and videos in a network environment or a local
environment.
Such a portable terminal device generally includes an internal speaker incorporated in the main
body, and an external I / F unit for connecting an external audio output device such as an
earphone or a headphone. The user can switch the output destination of the audio signal
between the built-in speaker and the external audio output device according to the use
environment. This switching is performed by inserting and removing the plug of the external
audio output device into the jack (external I / F unit) of the portable terminal device. Normally,
when the plug of an external audio output device such as earphones or headphones is inserted
into the jack of the portable terminal device, the output destination of the audio signal is the
external audio output device, and the jack of the portable terminal device When the plug is not
inserted, the output destination of the audio signal is the built-in speaker.
[0003]
JP 2007-134831 A
[0004]
For example, while the user is listening to music by plugging the earphone into the jack of the
portable terminal device, contrary to the user's intention, the plug of the earphone unplugs from
the jack and a loud sound is output from the built-in speaker And may surprise the user.
In particular, in public places such as trains and buses, it also causes trouble to others. In this
case, the user wants to mute as soon as possible, but pressing the volume button only gradually
lowers the volume but does not mute immediately, resulting in a problem that the usability of the
user is poor.
[0005]
Therefore, in an apparatus in which the output destination of the audio signal can be switched
between the built-in speaker and the external audio output device, an apparatus which allows the
user to preferably adjust the volume is desired.
09-05-2019
2
[0006]
The present invention has been made in view of the above, and an audio reproduction apparatus
capable of suitably performing volume adjustment by a user when the output destination of an
audio signal can be switched between an internal speaker and an external audio output device. It
is an object of the present invention to provide an audio reproduction method and a computerexecutable program.
[0007]
In order to solve the problems described above and achieve the object, the present invention
provides a built-in speaker, an external output unit to which an external audio output device can
be connected, and a volume control unit for the user to control the volume of the audio signal.
The external audio output device is connected to the external output means, volume adjustment
means for performing audio adjustment processing for adjusting the volume of the audio signal
in accordance with user operation of the volume operation means, and an output destination of
the audio signal Switching means for switching to the external output means in the case where
the external audio output device is connected to the external output means, and switching the
internal speaker to the built-in speaker; An audio reproduction apparatus, wherein in the volume
adjustment processing, different volume adjustments are performed according to the output
destination of the audio signal.
[0008]
Further, according to a preferred aspect of the present invention, the volume operation means is
a volume button including an increase button for increasing the volume of the audio signal and a
decrease button for reducing the volume of the audio signal. It is characterized by
[0009]
Further, according to a preferred aspect of the present invention, when the sound volume
adjusting unit outputs the sound signal to the built-in speaker, the decrease button is smaller
than when the sound signal is output to the external output unit. It is characterized in that
control is performed such that the amount of decrease of the sound volume of the audio signal
becomes large with respect to the operation amount of.
[0010]
Further, according to a preferable aspect of the present invention, when the output destination of
the audio signal is the built-in speaker, the volume adjusting unit is compared to the case where
the output destination of the audio signal is the external output unit. It is desirable that control
be performed such that the amount of decrease in volume of the audio signal is larger than the
09-05-2019
3
amount of operation of the decrease button.
[0011]
Further, according to a preferred aspect of the present invention, when the output destination of
the audio signal is the external output unit, the volume adjusting unit is compared to the case
where the output destination of the audio signal is the built-in speaker. It is preferable to control
so that the increase amount of the sound volume of the audio signal becomes smaller than the
operation amount of the increase button.
[0012]
Further, according to a preferred aspect of the present invention, it is desirable that the external
output means is an external output terminal, and the external sound output device is an
earphone or a headphone.
[0013]
Further, according to a preferred aspect of the present invention, in the volume adjustment
process, the volume adjustment unit performs the same volume adjustment regardless of the
output destination of the audio signal, and the output destination of the audio signal. It is
desirable to have a second mode in which different volume adjustments are made accordingly.
[0014]
Further, according to a preferred aspect of the present invention, it is desirable that the first
mode and the second mode be selectable by the user.
[0015]
Further, in order to solve the problems described above and to achieve the object, the present
invention is an audio adjustment process that adjusts the volume of the audio signal according to
the user operation of the volume operation unit for the user to operate the volume of the audio
signal. Switching the output destination of the audio signal to the external output means when
the external audio output device is connected to the external output means, and the external
audio output device is connected to the external output means And a switching step of switching
to a built-in speaker, and the volume adjustment step performs different volume adjustment in
the volume adjustment processing according to the output destination of the audio signal.
[0016]
09-05-2019
4
In addition, in order to solve the problems described above and achieve the object, the present
invention is a program installed in an audio reproduction apparatus, which is for user operation
of volume operation means for the user to operate the volume of an audio signal. According to
the volume adjustment step of performing an audio adjustment process to adjust the volume of
the audio signal, and the output destination of the audio signal is switched to the external output
means when the external audio output device is connected to the external output means The
computer executes the switching step of switching to the built-in speaker when the external
audio output device is not connected to the external output means, and in the volume adjustment
step, the output destination of the audio signal in the volume adjustment processing To perform
different volume adjustments in accordance with.
[0017]
According to the present invention, it is possible to provide an audio reproduction apparatus
which allows the user to preferably adjust the volume when the output destination of the audio
signal can be switched between the built-in speaker and the external audio output device. It plays
an effect.
[0018]
FIG. 1 is a schematic view of an audio reproduction device according to the embodiment.
FIG. 2 is a perspective view showing the appearance of the portable terminal device according to
the present embodiment.
FIG. 3 is a rear view showing the appearance of the portable terminal device according to the
present embodiment.
FIG. 4 is a diagram showing an example of the hardware configuration of the portable terminal
device according to the present embodiment.
FIG. 5 is a characteristic diagram for explaining an example of the attenuation relationship
between the operation amount of the “−” button of the volume button and the volume value.
09-05-2019
5
FIG. 6 is a characteristic diagram for describing an example of an increase relationship between
the operation amount of the “+” button of the volume button and the volume value.
FIG. 7 is a diagram showing a table for explaining the first mode and the second mode.
FIG. 8 is a flowchart for explaining an example of the voice adjustment process executed by the
control of the control unit.
[0019]
Hereinafter, embodiments of an audio reproduction device, an audio reproduction method, and a
computer-executable program according to the present embodiment will be described.
While the components of the present invention are generally illustrated in the drawings herein, it
will be readily understood that they may be arranged and designed in a wide variety of
configurations.
Accordingly, the following more detailed description of the embodiments of the devices, methods,
and programs of the present invention does not limit the scope of the present invention as set
forth in the claims, and is merely indicative of selected implementations of the present invention.
It is an example of the form and is merely representative of selected embodiments of the devices,
systems and methods consistent with the present invention as set forth in the claims herein.
One skilled in the art will appreciate that the invention may be practiced without one or more of
the specific details, or with other methods, components, and materials.
[0020]
(Embodiment) FIG. 1 is a schematic view of an audio reproduction apparatus according to the
embodiment.
09-05-2019
6
The audio reproduction apparatus is, for example, a smartphone, a mobile phone terminal, a
tablet, a notebook PC, a desktop PC, an audio reproduction player, a game machine, a stereo
component, a television apparatus, and the like.
As shown in FIG. 1, the audio reproduction device 1 includes a built-in speaker 10, an external
output unit 11, a volume control unit 12, a volume control unit 13, and a switching unit 14.
[0021]
The built-in speaker 10 emits an audio signal input from the switching means 14 to the outside.
The external output unit 11 is connected to the external audio output device 20 in a wired or
wireless manner, and outputs an audio signal input from the switching unit 14 to the external
audio output device 20.
[0022]
For example, the external output unit 11 may be an analog external output terminal (for example,
an earphone jack), a digital external output terminal (for example, a USB terminal or the like), a
wireless communication unit (for example, Bluetooth (registered trademark) communication unit,
You may comprise by WiFi communication part.
[0023]
The external sound output device 20 is, for example, a wired system (analog or digital (for
example, USB)) or a wireless system (for example, Bluetooth (registered trademark), WiFi or the
like) earphone, a headset, a speaker or the like.
[0024]
The volume operation means 12 is for the user to set the volume (volume) of the audio signal,
and is, for example, a physical volume button or a volume button or volume bar of a touch panel.
The volume button may include an increase button (e.g., a "+" button) to increase the volume of
09-05-2019
7
the audio signal and a decrease button ("-" button) to decrease the volume of the audio signal. .
[0025]
The switching unit 14 switches the output destination of the audio signal to the external output
unit 11 when the external audio output device 20 is connected to the external output unit 11,
and the external audio output device 20 is connected to the external output unit 11. If not, it
switches to the built-in speaker 10.
[0026]
The volume adjustment means 13 executes an audio adjustment process for adjusting the volume
of the audio signal in accordance with the user operation of the volume operation means 12.
In the audio adjustment process, different volume adjustment may be performed according to the
output destination of the audio signal.
Also, in the audio adjustment process, the volume adjustment means 13 performs a first mode in
which the same volume adjustment is performed regardless of the output destination of the
audio signal, and a second mode in which different volume adjustments are performed according
to the output destination of the audio signal. , May be provided.
[0027]
The volume adjustment means 13 may be configured to execute the mode selected by the user in
such a configuration that the user can select the first mode and the second mode via the user
interface. Further, when the external audio output device 2 connected to the external output
means 11 is an earphone or headphone, the volume adjustment means 13 executes the second
mode, and the external audio output device connected to the external output means 11 When 2
is a speaker, the first mode may be performed.
[0028]
09-05-2019
8
For example, in the second mode, when an audio signal is output to the built-in speaker 10, the
volume of the audio signal is reduced relative to the operation amount of the decrease button of
the volume button as compared with the case of outputting to the external output means 11. The
amount may be controlled to be large. In addition, in the second mode, when an audio signal is
output to the external output unit 11, control may be performed so that the increase amount of
the sound volume of the audio signal is smaller than that when outputting to the built-in speaker
10. Here, the operation amount of the button is the pressing time or the number of pressing
times of the button.
[0029]
As described above, according to the present embodiment, the built-in speaker 10, the external
output unit 11 to which an external audio output device can be connected, and the volume
operation unit 12 for the user to operate the volume of the audio signal. Volume adjustment
means 13 for adjusting the volume of the audio signal according to the operation of the volume
operation means 12, and switching means 14 for switching the output destination of the audio
signal to the built-in speaker 10 or the external output means 11; In the voice adjustment
processing, since the volume adjustment is performed differently according to the output
destination of the audio signal in the audio adjustment processing, the user is preferably used in
an apparatus capable of switching the output destination of the audio signal between the built-in
speaker and the external audio output device. It is possible to adjust the volume.
[0030]
(Example) With reference to FIG. 2 to FIG. 8, an example in which the voice reproduction
apparatus according to the above embodiment is applied to a portable terminal apparatus such
as a smart phone will be described.
FIG. 2 is a perspective view showing the appearance of the portable terminal device according to
the present embodiment. FIG. 3 is a rear view showing the appearance of the portable terminal
device according to the present embodiment.
[0031]
As shown in FIGS. 2 and 3, the portable terminal device 30 includes a housing 31 having a
substantially hexahedral shape. Of the surfaces of the housing 31, one surface is a front surface
09-05-2019
9
31A, the other surface facing the front surface 31A is a rear surface 31C, and the surface of the
housing 31 sandwiched between the front surface 31A and the rear surface 31C is a side surface
31B. . In the smartphone 30, the touch display unit 41 including the touch sensor 41 </ b> A and
the display unit 41 </ b> B and the receiver 42 are disposed on the front surface 31 </ b> A of
the housing 31.
[0032]
The touch display unit 41 displays information such as characters, figures, and images, and
detects various operations performed on the touch sensor 41A using a finger, a stylus, a pen or
the like (hereinafter referred to as "indicator"). Do. As a method of detecting various operations
by the touch sensor 41A, a capacitance method, a pressure-sensitive method, or the like can be
adopted.
[0033]
A volume button 44 is disposed on the left side 31 B of the housing 30. The volume button is for
the user to manipulate the volume of the audio signal, and includes a "+" button 44a for
increasing the volume and a "-" button 44b for decreasing the volume.
[0034]
A power button 48 (see FIG. 4) is disposed on the right side 31B of the housing 30. An external
output terminal 45 to which a plug of an external audio output device 80 such as earphones or
headphones is connected, a microphone 46, and a built-in speaker 47 are disposed on the lower
side 31B of the housing 30.
[0035]
FIG. 4 is a diagram showing an example of the hardware configuration of the portable terminal
device according to the present embodiment. As shown in FIG. 4, the portable terminal device 30
includes a control unit 50, a memory 51, a power supply unit 53, a communication unit 54, a
touch display unit 41 (touch sensor 41A, display unit 41B), and voice processing. A section 60,
09-05-2019
10
an operation section 70, a receiver 42, and a microphone 46 are provided.
[0036]
The touch display unit 41 includes a display unit 41B and a touch sensor 41A superimposed on
the display unit 41B. The touch sensor 41A detects various operations performed on the touch
sensor 41A using an indicator such as a finger or a pen along with the position on the touch
sensor 41A of the place where the operation is performed, and the control unit 50 Notice. The
operation detected by the touch sensor 41A includes a touch operation, a swipe operation, and a
pitch operation. The display unit 41B is configured of, for example, a liquid crystal display (LCD),
an organic electro-luminescence (EL) panel, or the like, and displays characters, figures, and the
like.
[0037]
The operation unit 70 includes various buttons such as the volume button 44 and the power
button 48, receives an operation of the user through the button, and transmits an instruction
signal corresponding to the received operation to the control unit 50.
[0038]
The power supply unit 53 supplies the power obtained from the storage battery or the external
power supply to each unit of the portable terminal device 30 including the control unit 50
according to the control of the control unit 50.
[0039]
The communication unit 54 establishes a wireless signal line according to a predetermined
communication scheme with the base station via a channel allocated by the base station, and
performs telephone communication and information communication with the base station.
The receiver 42 outputs the voice signal transmitted from the control unit 50 as voice.
The microphone 46 converts the voice of the user or the like into a voice signal and outputs the
voice signal to the control unit 50.
09-05-2019
11
[0040]
The memory 51 is, for example, a RAM, a DRAM, etc., and is a work area in which a program
executed by the control unit 50, data referred to by the control unit 50, calculation results of the
control unit 50, etc. are temporarily stored. used.
[0041]
The storage 52 is a computer-readable storage medium that holds programs and data (including
audio data) executed by the control unit 50, and is a non-volatile memory such as an EEPROM or
an SSD.
The storage 52 has, for example, an OS for controlling the entire portable terminal device 30,
various device drivers for operating peripheral devices in hardware, and functions for storing
various applications such as a music reproduction application.
[0042]
The audio processing unit 60 includes an audio output processing unit 61, a switching unit 62,
an external output terminal 45, and a built-in speaker 47. The voice output processing unit 61
includes an A / D converter, a voice processing LSI, an amplifier, and the like, and performs
various signal processing on the voice signal input from the control unit 50. Also, the amplifier of
the audio output processing unit 61 adjusts the volume by amplifying the audio signal input from
the control unit 50 by the amplification factor according to the volume value input from the
control unit 50, and after the volume adjustment The voice signal of is output to the switching
unit 62.
[0043]
The switching unit 62 outputs the audio signal input from the audio output unit 60 to the
external output terminal 45 or the built-in speaker 47 in response to the switching instruction of
the output destination input from the control unit 50. The built-in speaker 47 outputs a sound
corresponding to the sound signal input from the switching unit 62. The external output terminal
09-05-2019
12
45 is, for example, an analog output terminal, and outputs an audio signal input from the
switching unit 62 to the connected external audio output device 80.
[0044]
The control unit 50 is, for example, a central processing unit (CPU), a microprocessor, a DSP, or
the like, and controls the operation of the portable terminal device 30 in an integrated manner to
realize various functions (modes). Specifically, the control unit 50 executes an instruction
included in the program stored in the storage 52 while referring to the data stored in the storage
52 and the data expanded in the memory 51 as necessary. The various functions (modes) are
realized by controlling the touch display unit 41, the operation unit 70, the voice processing unit
60, and the like. In addition, the control unit 50 outputs an audio signal to the audio processing
unit 60 and causes the audio processing unit 60 to output the audio signal when the music
reproduction application is activated. When outputting the audio signal to the outside, the
control unit 50 performs volume adjustment processing for controlling the volume adjustment of
the audio signal in accordance with the user operation of the volume button 44.
[0045]
Next, the volume adjustment process executed by the control of the control unit 50 will be
specifically described. The control unit 50 has a function of detecting that the external audio
output device 80 is connected to the external output terminal 45. The control unit 50 switches
the output destination of the audio signal to the external output terminal 45 when the external
audio output device 80 is connected to the external output terminal 45 with respect to the
switching unit 62 of the audio processing unit 60. On the other hand, when the external audio
output device 80 is not connected to the external output terminal 45, the instruction to switch
the output destination of the audio signal to the built-in speaker 47 is issued. In response to this,
the switching unit 62 selectively switches the output destination of the audio signal between the
external output terminal 45 and the built-in speaker 47 in accordance with the switching
instruction of the output destination input from the control unit 50.
[0046]
Further, the control unit 50 sets a volume value according to the amount of operation of the user
on the “+” button 44 a and the “−” button 44 b of the volume button 44, and outputs the
09-05-2019
13
set volume value to the audio output processing unit 61. In response to this, the amplifier of the
audio output processing unit 61 adjusts the volume by amplifying the audio signal at an
amplification factor according to the volume value input from the control unit 50, and the audio
signal after volume adjustment is switched Output to
[0047]
The control unit 50 has a first mode in which the same volume adjustment is performed
regardless of the output destination of the audio signal, and a second mode in which different
volume adjustment is performed according to the output destination of the audio signal. The first
mode and the second mode can be selected (set) by the user via the user interface (for example,
on the mode setting screen), and the control unit 50 executes the mode selected by the user. Do.
[0048]
FIG. 5 is a characteristic diagram for explaining an example of the attenuation relationship
between the operation amount (the pressing time or the number of pressing times) of the “−”
button 44 b of the volume button 44 and the volume value. In the same figure, the start value (y
intercept) of the volume value is an example. In the figure, the vertical axis represents the volume
value, and the horizontal axis represents the operation amount of the "-" button 44b. 100 shows
the default characteristics. 101 is a characteristic in which the amount of attenuation (the
amount of decrease) is increased with respect to the operation amount of the “−” button 44 b
as compared with the default characteristic 100. In the case of the characteristic 101, the user
can set the volume value to 0 (Mute) with a slight operation of the “−” button 44b. Here,
although the volume value is changed continuously (analogically), it may be changed stepwise
(digitally).
[0049]
FIG. 6 is a characteristic diagram for explaining an example of an increase relationship between
the operation amount (pressing time or pressing number) of the “+” button 44 a of the volume
button 44 and the volume value. In the same figure, the start value (y intercept) of the volume
value is an example. In the figure, the vertical axis represents the volume value, and the
horizontal axis represents the amount of operation of the "+" button 44a. 200 shows the default
characteristics. 201 has a characteristic in which the amount of increase is smaller than the
09-05-2019
14
amount of operation of the “+” button 44 b as compared with the default characteristic 200. In
the case of the characteristic 201, the user can operate the "+" button 44b to slowly raise the
volume value. Here, although the volume value is changed continuously (analogically), it may be
changed stepwise (digitally).
[0050]
FIG. 7 is a diagram showing a table for explaining the first mode and the second mode. In the
first mode, according to the default characteristic 100 (see FIG. 5) in the case where the output
destination of the audio signal is the built-in speaker 47 and the external output terminal 45 with
respect to the operation amount of the “−” button 44b, Set volume value. Similarly, in the first
mode, the same default characteristic 200 (see FIG. 6) when the output destination of the audio
signal is the built-in speaker 47 and the external output terminal 45 with respect to the operation
amount of the “+” button 44a. Set the volume value according to).
[0051]
In the second mode, when the output destination of the audio signal is the built-in speaker 47,
the volume value is set according to the characteristic 101 (see FIG. 5) with respect to the
operation amount of the "-" button 44b. When the external output terminal 45 is selected, the
volume value is set in accordance with the default characteristic 100 (see FIG. 5). In the second
mode, when the output destination of the audio signal is the built-in speaker 47, the volume
value is set according to the default characteristic 200 (see FIG. 6) with respect to the operation
amount of the “+” button 44a. When the output destination of the signal is the external output
terminal 45, the volume value is set according to the characteristic 201 (see FIG. 6). In the
second mode, when the output destination of the audio signal is the built-in speaker 47,
compared with the case of the external output terminal 45, the volume value = 0 (Mute) with a
slight operation of the “−” button 44b. can do. Also, in the second mode, when the output
destination of the audio signal is the external output terminal 45, the user operates the “+”
button 44a more slowly than when the built-in speaker 47, and the volume value is slowly Can
raise
[0052]
The data of the characteristic diagrams and the tables shown in FIGS. 5 to 7 are stored in the
storage 52, and the control unit 50 refers to the data of the characteristic diagrams and the
tables shown in FIGS. To execute the first mode and the second mode.
09-05-2019
15
[0053]
FIG. 8 is a flow chart for explaining an example of the voice adjustment process executed by the
control of the control unit 50.
In FIG. 8, first, the control unit 50 determines which of the first mode and the second mode is
selected (step S1). When the first mode is selected, the control unit 100 sets the volume value
according to the default characteristics 100 and 200 for the operation amounts of the “−”
button 44 b and the “+” button 44 b (volume adjustment ) (Step S2). On the other hand, when
the second mode is selected in step S1, the control unit 50 determines whether the output
destination of the audio signal is the built-in speaker 47 or the external output terminal 45 (step
S3). When the output destination of the audio signal is the built-in speaker 47, the control unit
50 sets the volume value according to the characteristic of the characteristic 101 (attenuation
amount larger than the default) with respect to the operation amount of the "-" button 44b
(volume Adjustment is performed, and a volume value is set (volume adjustment) according to
the default characteristic 200 with respect to the operation amount of the "+" button 44a (step
S4). On the other hand, when the output destination of the audio signal is the external output
terminal 45 in step S4, the control unit 50 follows the characteristic 201 with respect to the
operation amount of the "+" button 44a (with an increase amount smaller than the default) Is set
(volume adjustment), and the volume value is set (volume adjustment) according to the default
characteristic 100 with respect to the operation amount of the "-" button 44b (step S5).
[0054]
According to the above embodiment, for example, when the user inserts the earphone into the
external output terminal 45 and listens to music at a large volume using the earphone, the
earphone against the user's intention is output from the external output terminal 45 Even if loud
music is output from the built-in speaker 47 while being detached, the user can operate the "-"
button 44b to immediately set it to Mute. Also, for example, when the user puts the earphone
into the external output terminal 45 and is listening to music with the earphone, the user can
operate the “+” button 44 b to slowly increase the volume, and the volume increases sharply.
To protect the user's ear.
[0055]
09-05-2019
16
DESCRIPTION OF SYMBOLS 1 audio | voice reproduction apparatus 2 external audio | voice
output device 10 built-in speaker 11 external output means 12 volume operation means 13
volume control means 14 switching means 30 portable terminal device 31 housing 41 touch
display part 41A touch sensor 41B display part 42 receiver 44 volume button 44a "+" button
44b "-" button 46 microphone 50 control unit 51 memory 53 power supply unit 54
communication unit 60 audio processing unit 61 audio output processing unit 62 switching unit
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