JP2002095083A - Information processor and method for controlling audio signal of information processor and computer-readable recording medium for recording its control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information processor, in which amplification factors among various sound sources are adjusted by easy and simple constitution and the amplification factors can be taken at a large value, and a method for controlling the audio signal of the information processor. SOLUTION: The information processor has a sound device 3 amplifying and outputting an input audio signal and a player device 10 reproducing at least two kinds of the sound sources by controlling the sound device 3. An auxiliary amplifying device 6 further amplifying an audio output from the sound device 3 in response to the kinds of the reproducing sound sources and an auxiliary amplifying control section 7 are installed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to music CDs and DVDs.
The present invention relates to an information processing apparatus such as a personal computer having a function of reproducing various sound sources such as a video disk and an audio file, an audio signal control method of the information processing apparatus, and a computer-readable recording medium storing a control program thereof.

[0002]

2. Description of the Related Art Conventionally, information processing on optical disks such as music CDs, video CDs, and DVD video disks, and personal computers having a function of reproducing various sound sources generally stored as files in magnetic storage devices such as WAVE and MIDI. As shown in FIG.
Magnetic storage device 5 for storing a sound source such as DI as a file
1, an optical disk device 52 for reading data recorded on an optical disk such as a music CD, a video CD, a DVD video disk, etc., at least two audio inputs and at least one audio output, and amplify an input signal. A sound device 53 that outputs a synthesized audio signal and can independently amplify each input / output signal;
Sound control unit 54 for setting the amplification factor of each audio input and audio output of this sound device 53
A speaker 55 for converting an audio output from the sound device 53 into sound, and a device capable of reproducing at least two types of sound sources, controlling the devices 51 to 53 and the sound control unit 54 to reproduce various sound sources. And a player device 50 that plays the game.

In the above information processing apparatus, the magnetic storage device 5
1 and one of the input systems provided in the optical disk device 52 and the sound device 53 are connected via a data bus 61 which is a digital signal line, and the player device 50 is connected between the devices 51 to 53 via the data bus 61. Data input / output with On the other hand, another input system provided in the sound device 53 is connected to an external input 62 generally provided in a personal computer, such as a line input and a microphone input.

[0004] An audio output from the sound device 53 is connected to a speaker 55 via an analog signal line 63.

The player device 50 controls the devices 51 to 53 and the sound control unit 54 by a control signal 64.

In the information processing apparatus having the above configuration, a basic flow of control of the player device 50 when an operator reproduces a sound source held in the magnetic storage device 51 or the optical disk device 52 is as follows.

First, the player device 50 reads data from a target sound source held in the magnetic storage device 51 or the optical disk device 52. Generally, the loaded data is
It is composed of audio data making up the music itself and control data used for the purpose of time synchronization and the like.

Next, the player device 50 sends the audio data to the audio input of the sound device 53 assigned for the reproduction output of the player device 50 according to the control data. The audio data sent to the sound device 53 is converted into an analog signal and output, and is converted into a sound by the speaker 55.

On the other hand, when audio from an AV device (not shown) connected via an external input 62 shown in FIG. 1 is reproduced, the audio output of the AV device is reproduced by a speaker 55 via a sound device 53. .

Here, in the above information processing apparatus,
Even when there is a difference in audio level between the reproduction output of the player device 50 and the external input 62, the operator adjusts the amplification factor of each input signal system of the sound device 53 using the sound control unit 54. can do. As a result, the level of the audio output can be made substantially constant, and it is not necessary to reset the master volume, that is, the amplification factor of the audio output of the sound device 53 each time a sound source from a different input signal system is reproduced. .

[0011]

However, according to the conventional information processing apparatus and the audio signal control method of the information processing apparatus, a video CD, a DVD video disk, a WA
It has a function of reproducing at least two or more types of sound sources among various sound sources such as VE and MIDI. In this case, the reproduction output from the player device 50 is connected to the audio input of the sound device 53 assigned to the player device 50, and thus the reproduction is performed by the same input system.

Therefore, when sound sources such as a WAVE file and a DVD video disk are sequentially reproduced and their audio levels are different, the operator controls the sound device 5 by the sound control unit 54 for each sound source.
It is necessary to readjust the master volume of No. 3.

Here, various sound sources such as a video CD, a DVD video disk, WAVE, and MIDI may tend to have different audio levels. For example, when an audio signal of three or more channels is recorded as in a DVD video disc and is downmixed and reproduced, the reproduction volume tends to be low.

Therefore, when reproducing a DVD video disc after reproducing a sound source such as WAVE, MIDI, music CD or the like different from the DVD video disc, for example, music C
When the D and DVD video discs are alternately reproduced, there is a problem that the operator needs to adjust the master volume of the sound device 53 each time.

At this time, when the audio level of the DVD video disc to be reproduced is particularly low, there is a problem that a satisfactory volume may not be obtained even if the master volume is adjusted.

Here, as a method for solving this problem, for example, there is an audio level control system and a reproducing apparatus disclosed in Japanese Patent Application Laid-Open No. 10-284960.

The audio level control system and the reproducing apparatus disclosed in the above publication include a media identification circuit, an audio level detection circuit and an output switching circuit, and an audio level preset circuit based on a relative audio level difference stored in these circuits. Is controlled to absorb the difference in audio level.

Therefore, the technique disclosed in the above publication has a problem that the circuit configuration and control are complicated, and it has not been able to solve the problem of increasing the amplification factor.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to adjust the amplification factor between various sound sources with an easy and simple configuration and to increase the amplification factor. An object of the present invention is to provide an information processing apparatus to be obtained, an audio signal control method of the information processing apparatus, and a computer-readable recording medium on which a control program for the method is recorded.

[0020]

In order to solve the above-mentioned problems, an information processing apparatus according to the present invention comprises: a sound device for amplifying and outputting an input audio signal; and an at least two types of sound device for controlling the sound device. In an information processing apparatus including a player device for reproducing a sound source, an auxiliary amplifier unit for further amplifying an audio output from the sound device according to the type of the reproduced sound source is provided.

According to the above invention, the player device controls the sound device to reproduce at least two types of sound sources. Then, the sound device amplifies and outputs the input audio signal.

Here, in the present invention, the auxiliary amplifier means
Further amplify the audio output from the sound device.
For this reason, amplification is performed by two-stage processing of the sound device and the auxiliary amplifier means. Therefore, the amplification factor is limited in the amplification of only the sound device, but in the two-stage amplification of the sound device and the auxiliary amplifier, the signal output from the auxiliary amplifier has a higher level than the input to the sound device. The output is obtained.

The amplification by the auxiliary amplifier means is performed according to the type of the sound source to be reproduced. For this reason, two-stage amplification can be performed according to the type of the sound source to be reproduced. If the type of the desired sound source is specified, the output of the sound source can be easily increased.

Therefore, it is possible to provide an information processing apparatus capable of easily adjusting the amplification factor between various sound sources and increasing the amplification factor.

In order to solve the above-mentioned problems, the information processing apparatus according to the present invention, in the above-mentioned information processing apparatus, comprises an auxiliary amplifier means for converting the audio output from the sound device into any one of sound sources to be reproduced. It is characterized by comprising an auxiliary amplifier device for further amplifying at a corresponding amplification factor, and auxiliary amplifier device control means for on / off controlling the auxiliary amplifier device according to the type of a sound source to be reproduced.

According to the above invention, the auxiliary amplifier device comprises:
The audio output from the sound device is further amplified at an amplification factor corresponding to any one type of the sound source to be reproduced.

The auxiliary amplifier device control means controls the ON / OFF of the auxiliary amplifier device according to the type of the sound source to be reproduced.

That is, the amplification factor in the auxiliary amplifier device is
It is a fixed one corresponding to any one type of sound source to be reproduced. Then, the auxiliary amplifier device control means controls on / off of the auxiliary amplifier device according to the type of the sound source to be reproduced, thereby performing two-stage amplification in the auxiliary amplifier device according to the type of the reproduced sound source, or It is possible to select whether to use only the sound device without amplifying the auxiliary amplifier device.

For example, a DVD video disk tends to have a lower playback volume than other sound sources such as WAVE, MIDI, and music CD. Therefore, for example, in the auxiliary amplifier device, the amplification factor for reproducing a DVD video disk is set as a fixed value. And
If the sound source to be played is a DVD video disc,
The auxiliary amplifier device control means turns on the auxiliary amplifier device to perform two-stage amplification, while in the case of a sound source other than a DVD video disk, the auxiliary amplifier device control device turns off the auxiliary amplifier device and amplifies by the sound device. Do only. This makes it possible to obtain an appropriate output for various sound sources.

Therefore, in the present invention, only on / off control of whether or not to perform two-stage amplification in accordance with the type of sound source to be reproduced is performed. Obtainable.

As a result, it is possible to provide an information processing apparatus capable of adjusting the amplification factor between various sound sources with an easy and simple configuration and having a large amplification factor.

In order to solve the above-mentioned problems, an audio signal control method for an information processing apparatus according to the present invention includes a sound device for amplifying and outputting an input audio signal, and at least two types of sound sources for controlling the sound device. In the audio signal control method of the information processing apparatus including the player device for reproducing the audio signal, the audio output from the sound device is further amplified according to the type of the sound source to be reproduced.

According to the above invention, the player device controls the sound device to reproduce at least two types of sound sources. Then, the sound device amplifies and outputs the input audio signal.

Here, in the present invention, since the audio output from the sound device is further amplified, the amplification is performed by two-stage processing with the sound device. Therefore, the amplification factor is limited in the amplification using only the sound device, but in the two-stage amplification with the sound device, a signal output finally has a high level output with respect to the input to the sound device.

The second-stage amplification is performed according to the type of the sound source to be reproduced. For this reason, two-stage amplification can be performed according to the type of the sound source to be reproduced. If the type of the desired sound source is specified, the output of the sound source can be easily increased.

Therefore, it is possible to provide an audio signal control method for an information processing apparatus capable of easily adjusting the amplification factor between various sound sources and increasing the amplification factor.

In order to solve the above-mentioned problems, an audio signal control method for an information processing device according to the present invention is the audio signal control method for an information processing device described above, wherein the audio output from the sound device is set to one of a sound source for reproduction. An auxiliary amplifier device for further amplifying at an amplification factor corresponding to one type is provided, and the auxiliary amplifier device is controlled to be turned on / off according to the type of a sound source to be reproduced.

According to the above invention, the auxiliary amplifier device comprises:
The audio output from the sound device is further amplified at an amplification factor corresponding to any one type of the sound source to be reproduced.

Then, on / off control of the auxiliary amplifier device is performed according to the type of a sound source to be reproduced.

That is, the amplification factor in the auxiliary amplifier device is
It is a fixed one corresponding to any one type of sound source to be reproduced. Then, by turning on / off the auxiliary amplifier device according to the type of the sound source to be reproduced,
Depending on the type of the sound source to be reproduced, it is possible to select between performing two-stage amplification in the auxiliary amplifier device or amplifying only the sound device without performing amplification in the auxiliary amplifier device.

Therefore, according to the present invention, only on / off control of whether or not to perform two-stage amplification in accordance with the type of sound source to be reproduced is performed. Obtainable.

As a result, it is possible to provide an audio signal control method for an information processing apparatus capable of adjusting the amplification factor between various sound sources with an easy and simple configuration and increasing the amplification factor.

According to another aspect of the present invention, there is provided a computer-readable recording medium storing a program to be executed by a computer, wherein at least two of the above-described information processing apparatus audio signal control methods are implemented. The process consists of a process of amplifying and outputting an audio signal input to a sound device in order to reproduce different types of sound sources, and a process of further amplifying the audio output from the sound device in accordance with the type of the sound source to be reproduced. .

According to another aspect of the present invention, there is provided a computer-readable recording medium having recorded thereon a program to be executed by a computer according to the present invention.
A process of amplifying and outputting an audio signal input to a sound device to reproduce at least two types of sound sources;
A process of further amplifying the audio output from the sound device by an auxiliary amplifier having an amplification factor corresponding to any one type of a sound source to be reproduced; and The processing is turned on and off in response to the request.

Thus, the computer-readable recording of a control program in an audio signal control method of an information processing apparatus capable of adjusting the amplification factor between various sound sources with an easy and simple configuration and capable of increasing the amplification factor. A recording medium can be provided.

[0046]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a personal computer as an information processing apparatus according to the present embodiment
A magnetic storage device 1 for storing a sound source file such as a WAVE, an optical disk device 2 for reading out a signal recorded on an optical disk such as a music CD, a video CD, a DVD video disk, and two audio inputs and one system A sound device 3 having a function of setting an amplification factor of a signal for each input / output system and a function of amplifying and synthesizing a signal of each input system and outputting the signal;
And a sound control unit 4 for setting the amplification factor of each input / output signal, and an amplifying device having a pair of audio input / output systems.
Auxiliary amplifier device 6 for amplifying the audio output of
And the auxiliary amplifier device 6 is controlled.
An auxiliary amplifier control unit 7 for controlling an amplification factor when amplifying an audio signal, a speaker 5 for converting an audio output from the sound device 3 into sound, and at least two types of sound sources can be reproduced. Each device 1 described above
A player device 10 that controls 2.3 and the control units 4 and 7 to reproduce various sound sources. The auxiliary amplifier device 6 and the auxiliary amplifier control section 7 function as auxiliary amplifier means of the present invention.
Further, the auxiliary amplifier control section 7 further functions as an auxiliary amplifier device control means of the present invention.

The above magnetic storage device 1, optical disk device 2,
And one of the input systems of the sound device 3 is connected to the player device 10 via the data bus 11,
As a result, the player device 10
Is configured to be able to input and output data to and from the magnetic storage device 1, the optical disk device 2, and the sound device 3 via the.

The other input system of the sound device 3 is connected to an external input 12 generally provided in a personal computer, such as a line input and a microphone input.

The audio output of the sound device 3, the auxiliary amplifier device 6, and the speaker 5 are connected by analog signal lines 13 and 14.

The player device 10 controls each of the devices 1, 2, and 3 and each of the control units 4, 7 with a control signal 15. Also, the player device 10
Sound sources from each magnetic storage device 1, optical disk device 2, and external input 12 are MIDI, WAVE, music CD, video C
It has a function of determining which of various sound sources such as D or DVD video disk.

That is, the personal computer of the present embodiment has a configuration in which an auxiliary amplifier device 6 and an auxiliary amplifier control unit 7 are added as compared with the conventional personal computer shown in FIG. In the present embodiment, the audio device 3 has two audio inputs and one audio output, but this does not lose generality. That is, a general personal computer sound device 3 has two audio inputs and one audio output, and is no different from a general personal computer having the sound device 3.

In FIG. 1, input devices such as a keyboard and a pointing device, display devices such as a CRT and an LCD, arithmetic devices, interrupt control devices, and other information processing devices such as personal computers are generally provided. Various devices and means not directly related to are omitted.

The basic control flow of the player device 10 in the personal computer having the above configuration will be described with reference to the flowchart shown in FIG. Note that the player device 10 can be realized as a plurality of single-function player devices capable of reproducing only individual sound sources, but here, the player device 10 is capable of reproducing all sound sources, and The control for increasing the audio level during reproduction of a DVD video disc will be described. That is,
Video CD, DVD video disk, WAVE, MID
In various sound sources such as I and the like, for example, audio signals of three or more channels are recorded as in a DVD video disc, and when this is downmixed and reproduced, the reproduction volume tends to be low. This is because, in the case of the reproduction of, the size may be increased as compared with the reproduction by another sound source.

As shown in FIG. 2, first, when the operator reproduces the sound source file of the magnetic storage device 1 or the optical disk of the optical disk device 2, the player device 10 determines whether the type of the sound source to be reproduced is a video CD or a DVD video disk. , WAV
It is determined which of the various sound sources such as E or MIDI is (S1).

When reproducing a DVD video disk, the auxiliary amplifier control unit 7 is used to turn on the auxiliary amplifier device 6 (S2). As a result, since the amplification factor of the auxiliary amplifier device 6 is set to n (n> 1), the output of the sound device 3 is amplified n times. Note that n is a predetermined fixed value. In other words, strictly speaking, the audio level at the time of reproduction of each DVD video disk is different, but the audio level at the time of reproduction of the DVD video disk is different from other video CDs and WAVs.
It differs greatly from the audio level at the time of reproduction of various sound sources such as E and MIDI. Therefore, in setting the fixed value of the amplification factor n, it is preferable to set, for example, an average amplification factor n as the audio level at the time of reproduction on the DVD video disk.

Next, the data of the sound source to be reproduced is read out (S3). If there is sound source data to be read out (S4), the audio data is sent to the sound device 3 according to the control data included in the read out sound source data (S5). As a result, the audio data input to the sound device 3 is converted into an analog signal and output, and is converted into sound by the speaker 5 via the auxiliary amplifier device 6.
As a result, when playing a DVD video disc,
An output obtained by amplifying the output of the sound device 3 by n times can be extracted from the speaker 5.

In step S1, if the sound source is other than a DVD video disk, the flow shifts to step S3 to read out the sound source data.

On the other hand, if there is no sound source data to be read in S4, the sound source that has been reproduced so far is determined (S4).
6) If the sound source is a DVD video disk, the auxiliary amplifier control unit 7 is used to turn off the auxiliary amplifier device 6 to set the volume level output from the sound device 3, ie, the amplification factor, to 1. (S7), and the reproduction ends. Thus, the initial value of the auxiliary amplifier device 6 always changes the volume level output from the sound device 3 to the speaker 5.
Will be output to

If it is determined in step S6 that the sound source is not a DVD video disk from the beginning, the auxiliary amplifier device 6 has been turned off from the beginning, and the reproduction is terminated as it is.

As a result, in the present embodiment, when a DVD video disc is reproduced, the output waveform of the sound device 3 shown in FIG. ), Which is further amplified.

On the other hand, when a WAVE file other than a DVD video disc is reproduced, for example, the output waveform of the sound device 3 shown in FIG. 4A is passed through the auxiliary amplifier device 6 as shown in FIG. Then, the same output waveform is obtained.

Therefore, in the present embodiment, when reproducing a sound source other than a DVD video disc, FIG.
As shown in (a) and (b), while the same output as the input is obtained, when reproducing a DVD video disc,
As shown in FIGS. 3A and 3B, the signal is amplified by the auxiliary amplifier device 6, and an output having a higher level than the input is obtained.

As described above, in the personal computer and the audio signal control method for the personal computer according to the present embodiment, the player device 10
To play back at least two types of sound sources. Then, the sound device 3 amplifies and outputs the input audio signal.

Here, in the present embodiment, the auxiliary amplifier device 6 further amplifies the audio output from the sound device 3. For this reason, amplification is performed by two-stage processing of the sound device 3 and the auxiliary amplifier device 6. Therefore, the amplification factor is limited in the amplification of the sound device 3 alone, but in the two-stage amplification of the sound device 3 and the auxiliary amplifier device 6, the signal output from the auxiliary amplifier device 6 is input to the sound device 3. On the other hand, a high level output can be obtained.

The amplification in the auxiliary amplifier device 6 is performed according to the type of the sound source to be reproduced. For this reason, two-stage amplification can be performed according to the type of the sound source to be reproduced. If the type of the desired sound source is specified, the output of the sound source can be easily increased.

Therefore, it is possible to provide a personal computer and an audio signal control method for a personal computer that can easily adjust the amplification factor between various sound sources and can increase the amplification factor.

In the personal computer and the audio signal control method for the personal computer according to the present embodiment, the auxiliary amplifier device 6 amplifies the audio output from the sound device 3 in accordance with any one of the types of sound sources to be reproduced. Further amplify at a rate. Then, the auxiliary amplifier control unit 7 controls on / off of the auxiliary amplifier device 6 according to the type of the sound source to be reproduced.

That is, the amplification factor in the auxiliary amplifier device 6 is fixed corresponding to any one type of the sound source to be reproduced. Then, the auxiliary amplifier control section 7 controls the auxiliary amplifier device 6 on / off according to the type of the sound source to be reproduced, thereby performing two-stage amplification in the auxiliary amplifier device 6 according to the type of the reproduced sound source. It is possible to select whether to amplify only the sound device 3 without amplifying the auxiliary amplifier device 6.

For example, a DVD video disk tends to have a lower playback volume than other sound sources such as WAVE, MIDI, and music CD. Therefore, for example, in the auxiliary amplifier device 6, an amplification factor for reproducing a DVD video disk is set as a fixed value. When the sound source to be reproduced is a DVD video disk, the auxiliary amplifier control unit 7 turns on the auxiliary amplifier device 6 to perform two-stage amplification. The control unit 7 turns off the auxiliary amplifier device 6 and performs only amplification by the sound device 3. This makes it possible to obtain an appropriate output for various sound sources.

Therefore, in this embodiment, instead of controlling the audio level using the audio level detection circuit, the output switching circuit, and the audio preset circuit, whether to perform two-stage amplification in accordance with the type of the sound source to be reproduced is determined. Since only on / off control is performed, appropriate outputs for various sound sources can be obtained with easy control and a simple configuration.

As a result, it is possible to provide a personal computer and an audio signal control method for a personal computer that can easily and easily adjust the amplification factor between various sound sources and can increase the amplification factor.

In this embodiment, the audio signal input to the sound device 3 is amplified and output to reproduce at least two types of sound sources in order to execute the above-described audio signal control method for a personal computer. Processing and audio output from the sound device 3
It is possible to record a program to be executed by a computer including a process of further amplifying according to the type of a sound source to be reproduced on a computer-readable recording medium.

Further, in this embodiment, in order to execute the above-described audio signal control method for a personal computer, to reproduce at least two types of sound sources, amplify and output an audio signal input to a sound device. A process of further amplifying the audio output from the sound device by an auxiliary amplifier having an amplification factor according to any one type of a sound source to be reproduced; and It is possible to record on a computer-readable recording medium a program to be executed by a computer, which comprises a process of turning on and off according to the type.

Thus, the computer readable recording which records the control program in the audio signal control method of the personal computer which can easily and easily adjust the amplification factor between various sound sources and can increase the amplification factor. A medium can be provided.

In the description of the present embodiment, it is assumed that the player device 10 controls the sound device 3 via the sound control unit 4, that is, controls the amplification factor. I have. However, this does not prohibit control by the sound device 3.

That is, the description will be made by applying the configuration of an actual personal computer. The sound device 3 is a sound chip (hardware), and the sound control unit 4
Corresponds to a service provided by a sound driver or an operating system for controlling the sound chip, and the player device 10 corresponds to an application (software).

Here, when the player device 10 adjusts the amplification factor, it is possible to directly control the sound chip, and it is also possible to control and adjust the sound driver and the like. Is also possible.
However, an application program such as the player device 10 does not usually adjust the volume, and all are controlled by software. Therefore, in the present invention, it is assumed that all the player devices 10 control the sound device 3 via the sound control unit 4.

[0079]

As described above, the information processing apparatus of the present invention is provided with auxiliary amplifier means for further amplifying the audio output from the sound device in accordance with the type of the sound source to be reproduced.

Therefore, amplification is performed by two-stage processing of the sound device and the auxiliary amplifier means. Therefore,
The amplification factor is limited in the amplification of the sound device alone, but in the two-stage amplification of the sound device and the auxiliary amplifier, the signal output from the auxiliary amplifier has a high level output with respect to the input to the sound device. can get.

The amplification by the auxiliary amplifier means is performed according to the type of the sound source to be reproduced. For this reason, two-stage amplification can be performed according to the type of the sound source to be reproduced. If the type of the desired sound source is specified, the output of the sound source can be easily increased.

Therefore, there is an effect that it is possible to easily adjust the amplification factor between various sound sources and to provide an information processing apparatus capable of increasing the amplification factor.

As described above, the information processing apparatus of the present invention
In the information processing apparatus described above, the auxiliary amplifier means may include:
An auxiliary amplifier device that further amplifies the audio output from the sound device at an amplification factor corresponding to any one type of sound source to be reproduced, and an auxiliary device that controls on / off of the auxiliary amplifier device according to the type of the sound source to be reproduced. It comprises amplifier device control means.

Therefore, by controlling on / off of the auxiliary amplifier device according to the type of the sound source to be reproduced, the two-stage operation of the auxiliary amplifier device is controlled according to the type of the reproduced sound source.
It is possible to select whether to perform the step amplification or the amplification of only the sound device without performing the amplification of the auxiliary amplifier device.

Therefore, in the present invention, only on / off control of whether or not to perform two-stage amplification according to the type of sound source to be reproduced is performed. Obtainable.

As a result, it is possible to provide an information processing apparatus capable of adjusting the amplification factor between various sound sources with an easy and simple configuration and having a large amplification factor.

As described above, the audio signal control method of the information processing apparatus of the present invention is a method of further amplifying the audio output from the sound device according to the type of the sound source to be reproduced.

Therefore, since amplification is performed by two-stage processing with the sound device, the amplification factor is limited in amplification with only the sound device, but is finally output in two-stage amplification with the sound device. The signal has a high level output with respect to the input to the sound device.

The second-stage amplification is performed according to the type of the sound source to be reproduced. For this reason, two-stage amplification can be performed according to the type of the sound source to be reproduced. If the type of the desired sound source is specified, the output of the sound source can be easily increased.

Therefore, there is an effect that it is possible to easily adjust the amplification factor between various sound sources and to provide an audio signal control method for an information processing apparatus capable of increasing the amplification factor.

As described above, according to the audio signal control method for an information processing apparatus of the present invention, in the audio signal control method for an information processing apparatus described above, an audio output from a sound device is output from one of sound sources to be reproduced. This is a method of providing an auxiliary amplifier device for further amplifying at an amplification factor according to the type, and performing on / off control of the auxiliary amplifier device according to the type of a sound source to be reproduced.

Therefore, by controlling on / off of the auxiliary amplifier device according to the type of the sound source to be reproduced, the auxiliary amplifier device is controlled according to the type of the sound source to be reproduced.
It is possible to select whether to perform the step amplification or the amplification of only the sound device without performing the amplification of the auxiliary amplifier device.

Therefore, according to the present invention, only on / off control of whether or not to perform two-stage amplification in accordance with the type of sound source to be reproduced is performed. Obtainable.

As a result, it is possible to provide an audio signal control method for an information processing apparatus capable of adjusting the amplification factor between various sound sources with an easy and simple configuration and increasing the amplification factor. .

A computer-readable recording medium in which a program to be executed by a computer according to the present invention is recorded has at least two types of sound sources for executing the above-described audio signal control method for an information processing apparatus. And a process for amplifying and outputting the audio signal input to the sound device in order to reproduce the audio signal, and a process for further amplifying the audio output from the sound device in accordance with the type of the sound source to be reproduced. .

As described above, at least two types of computer-readable recording media storing a program to be executed by a computer according to the present invention are provided in order to execute the above-described audio signal control method for an information processing apparatus. Processing for amplifying and outputting an audio signal input to a sound device in order to reproduce a sound source, and an auxiliary amplifier having an amplification factor according to any one type of a sound source for reproducing the audio output from the sound device. The process includes a process of further amplifying by the device and a process of turning on and off the amplification of the auxiliary amplifier device according to the type of the sound source to be reproduced.

Therefore, a computer-readable recording of a control program in an audio signal control method of an information processing apparatus capable of adjusting the amplification factor among various sound sources with an easy and simple configuration and capable of increasing the amplification factor is possible. There is an effect that a recording medium can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment of a personal computer according to the present invention.

FIG. 2 is a flowchart showing an audio signal control method of the personal computer.

3A is a waveform diagram showing an output waveform of a sound device when a DVD video disk is reproduced in the personal computer, and FIG. 3B is a diagram showing an output waveform of an auxiliary amplifier device when a DVD video disk is reproduced. It is a waveform diagram shown.

FIG. 4A is a waveform diagram showing an output waveform of a sound device when a WAVE file other than a DVD video disc is reproduced in the personal computer, and FIG. 4B is a waveform diagram showing an output waveform of the auxiliary amplifier device; FIG.

FIG. 5 is a block diagram showing a conventional personal computer.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 magnetic storage device 2 optical disk device 3 sound device 4 sound control unit 5 speaker 6 auxiliary amplifier device (auxiliary amplifier device) 7 auxiliary amplifier control unit (auxiliary amplifier device, auxiliary amplifier device control unit) 10 player device

Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat II (reference) H03F 3/72 H03F 3/72 F term (reference) 5D020 AC01 5D044 AB05 BC04 CC04 FG30 5D080 BA01 DA06 FA05 FA54 JA08 5J069 AA02 AA41 AA51 CA32 CA35 FA15 SA05 TA01 5J092 AA02 AA41 AA51 CA32 CA35 FA15 SA05 TA01 VL03

Claims (6)

[Claims] An information processing apparatus comprising: a sound device for amplifying and outputting an input audio signal; and a player device for controlling the sound device to reproduce at least two types of sound sources. An information processing apparatus comprising an auxiliary amplifier for further amplifying an audio output in accordance with a type of a sound source to be reproduced. 2. An auxiliary amplifier means for further amplifying an audio output from a sound device at an amplification factor corresponding to any one type of a sound source to be reproduced, and reproducing the auxiliary amplifier device. 2. The information processing apparatus according to claim 1, further comprising an auxiliary amplifier device control unit that performs on / off control according to a type of a sound source. 3. An audio signal control method for an information processing apparatus comprising: a sound device for amplifying and outputting an input audio signal; and a player device for controlling said sound device to reproduce at least two types of sound sources. An audio signal control method for an information processing device, further comprising amplifying an audio output from the sound device according to a type of a sound source to be reproduced. 4. An auxiliary amplifier for further amplifying an audio output from a sound device with an amplification factor according to any one type of a sound source to be reproduced, and a type of a sound source for reproducing the auxiliary amplifier device 4. The audio signal control method for an information processing apparatus according to claim 3, wherein the on / off control is performed in accordance with the following. 5. A process for amplifying and outputting an audio signal input to a sound device to reproduce at least two types of sound sources in order to execute the audio signal control method for an information processing device according to claim 3. A computer-readable storage medium storing a program for causing a computer to execute a process of further amplifying an audio output from a sound device in accordance with a type of a sound source to be reproduced. 6. A process for amplifying and outputting an audio signal input to a sound device to reproduce at least two types of sound sources in order to execute the audio signal control method for an information processing device according to claim 4. A process of further amplifying the audio output from the sound device by an auxiliary amplifier device having an amplification factor corresponding to any one type of a sound source to be reproduced; and And a computer-readable recording medium for recording a program for causing a computer to execute a process of turning on and off.