JPH1188997A - Sound reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a surround signal from a headphone use output terminal while obtaining a usual front signal of a sound output means by outputting a sound different from a sound of an output of the sound output means from the headphone use output terminal. SOLUTION: In the case of outputting a control signal to select a front signal of a contact (a) from an output control means 37 to an output selection means 30, a control signal to select a contact (c) of an output of an amplifier means 32 is outputted to a changeover means 33. Then a front speaker sound signal is outputted from a sound output terminal 40 and a surround sound signal is outputted from a headphone use output terminal 34. Thus, the sound effect is set in two-dimension in matching with the sound of the front speaker by connecting a rear speaker amplifier and the speaker to the headphone use output terminal 34. If the rear speaker system is not in use, the connection of the headphone use output terminal 34 is simply removed without revamping the wire of the device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing apparatus for reproducing a plurality of audio signals.

[0002]

2. Description of the Related Art In recent years, among devices for reproducing video signals and audio signals, devices capable of reproducing an audio signal having a plurality of channels have increased. For example, an LD (laser disc) player or a DVD (digital farthair disc) player can reproduce multi-channels including a surround effect such as a movie, and has a realistic sound like a movie theater. We can provide space.

The configuration of such a conventional audio reproducing apparatus will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration of a conventional audio reproducing apparatus, wherein 1 is a disk on which video and audio are recorded, 2 is a motor for rotating the disk 1, 3 is a pickup for reading a signal recorded from the disk 1, Reference numeral 4 denotes reproduction control means for controlling the motor 2 and the pickup 3 so as to perform appropriate signal reading, 5 a decoder for demodulating a video signal and an audio signal from the read RF signal, and 6 a TV monitor for demodulating the demodulated video signal. A video signal output terminal for outputting a video signal; 8, an audio signal processing device for separating a plurality of channels from a demodulated audio signal; Adding means for adding the output signal, a front audio output terminal for outputting a front speaker component of the audio output from the audio signal processing means 8, and 11 A surround output terminal for outputting a surround signal such as a rear speaker output from the voice signal processing means 8, an addition audio output terminal 12 for outputting a signal added by the addition means 9, and a headphone 13 for outputting the output of the addition means 9. Amplifying means 14 for making a signal suitable for the above, etc., is a headphone output terminal for outputting the output of the amplifying means 13 to headphones (not shown).

The operation of a conventional audio reproducing apparatus having such a configuration will be described. First, the disc 1 is rotated by a reproduction control means 4 and a motor 2 in a manner suitable for a track to be reproduced. A pickup 3 reads a signal recorded from the track with a laser beam or the like and outputs it as an RF signal. 5 is input. The decoder 5 demodulates a video signal and an audio signal from the input RF signal. The demodulated video signal is converted by the video signal processing means 6 into a signal suitable for a television monitor, and output from the video output terminal 7 to a monitor (not shown).

On the other hand, the audio signal demodulated by the decoder 5 is separated by a sound signal processing means 8 into a front signal for a front speaker and a surround signal for a rear speaker and output. In addition to these, a DVD or the like originally includes a signal for a center speaker and an audio signal for a low frequency band, but here, a front signal and a surround signal are used for simplification of description.

The front signal (x in FIG. 2) output from the audio signal processing means 8 is output to an amplifier or the like from a front speaker signal output terminal 7 disposed on the back of the apparatus. The surround signal (y in FIG. 2) output from the audio signal processing means 8 is also output to an amplifier or the like from a surround signal output terminal 10 arranged on the back of the device.

[0007] By amplifying such two sets of signals and outputting the amplified signals to a speaker (not shown), a sound field having a sense of realism is provided, and a movie or the like can be effectively enjoyed.

[0008] Further, the front signal and the surround signal output from the audio signal processing means 8 are added by the adding means 9 and synthesized. The output of the addition means 9 is output from an addition output terminal 12, amplified, and then output to a speaker or the like. In this case, reproduction is performed by one set of speakers.

Further, the output of the adding means 9 is supplied to the amplifying means 1
After being amplified at 3, the signal is output to the headphone from a headphone output terminal 14 arranged on the front of the device. Thereby, the reproduced sound can be enjoyed without using the speaker.

[0010]

However, in the conventional method, when a plurality of sounds are to be enjoyed, a connection between an output terminal located on the back of the apparatus and an amplifier is made, and a preset surround speaker is used. And it is not suitable for removing or adding surround speakers.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide an audio reproducing apparatus which can easily attach and detach a surround speaker system and reproduce multi-channel audio. I do.

[0012]

In order to achieve this object, an audio reproducing apparatus according to the present invention comprises: reproducing means for reproducing a plurality of sounds; output means for headphones to which headphones can be attached; Audio output means for outputting the sound of the reproduction means located in the, from the headphone output means,
It has a configuration for outputting an audio signal different from the audio output from the audio output means.

With this configuration, it is possible to obtain an audio reproducing apparatus that can use a surround signal from a headphone output terminal located on the front of the apparatus while obtaining a front signal from a normal output.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention according to claim 1 of the present invention provides a reproducing means capable of reproducing a plurality of sounds, an output means for headphones to which headphones can be mounted, and a reproducing means located on the back of the reproducing apparatus. Sound output means for outputting the sound of the headphone, and from the headphone output means, a sound signal different from the sound output from the sound output means is output, and the equipped headphone output terminal is provided. Can output a surround sound signal at any time, and can easily set and eliminate the surround system without troublesome wiring.

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. (Embodiment 1) FIG. 1 is a block diagram showing a configuration of an audio reproducing apparatus according to Embodiment 1 of the present invention. As in the description of the related art, the form of a plurality of reproduced audio signals is simplified to audio signals for front speakers and surround for the sake of description.

In FIG. 1, 1 is a disk on which video and audio are recorded, 2 is a motor for rotating the disk 1, 3 is a pickup for reading a signal recorded from the disk 1, and 4 is an appropriate signal reader. A reproduction control means for controlling the motor 2 and the pickup 3; a decoder 5 for demodulating a video signal and an audio signal from the read RF signal;
6 is a video signal processing means for outputting a demodulated video signal to a television monitor or the like, 7 is a video output terminal for outputting a video signal, and 8 is an audio signal processing means for separating a plurality of channels from the demodulated audio signal. It is. In the above, the same numbers as those of the conventional example are assigned, and the same operation is performed.

An output selection means 30 selects a signal obtained by adding a plurality of sounds and a front speaker signal among the plurality of signals. An output selection means 40 is located on the back of the reproducing apparatus and outputs the output of the output selection means 30. An audio output terminal for output, 31 is a delay unit for delaying the surround signal output from the audio signal processing unit 8, 32 is an amplification unit for amplifying the output of the delay unit 31, and 33 is an output of the amplification unit 32 and output selection. A switching means 34 for switching between the added signal output from the means 30 and the output of the switching means 33, a headphone output terminal located on the front of the reproducing apparatus, and a headphone output terminal 35 having a jack. Headphone jack detection means for detecting insertion, 36 is a manually operable switch, 39 is for determining whether reproduced sound can be output as a plurality of sounds. That voice channel detector, 37,
Output of headphone jack detection means 35 and switch 36
And the output of the audio channel detecting means 39 are input,
Output control means for controlling the switching means 33 and the output selection means 30 by the signal.

The operation of the audio reproducing apparatus configured as described above will be described with reference to FIG.

First, a signal recorded on a track is output as an RF signal from the disk 1 by a rotation control suitable for a track to be reproduced, and input to the decoder 5 as in the conventional example. In the decoder 5, from the input RF signal,
Demodulate video and audio signals. The demodulated video signal is converted by the video signal processing means 6 into a signal suitable for a television monitor, and output from the video output terminal 7 to a television monitor (not shown).

The audio signal demodulated by the decoder 5 is converted by an audio signal processing means 8 into a front signal (x) for a front speaker and a surround signal (y) for a rear speaker.
Are output separately. As described above, in addition to these, there are cases where a signal for a center speaker, a sound signal for a low frequency band, and the like are included, but the front signal and the surround signal are limited for explanation.

The front signal and the surround signal output from the audio signal processing means 8 are input to the output selection means 30. In the output selection means 30, the two signals are added by an internal addition circuit. This addition signal is output to the switching means 33.

A control signal from the output control means 37 is input to the output selection means 30, and either the added signal or the front signal is selected and output from the audio output terminal 40 to an amplifier or the like. You.

On the other hand, the surround signal output from the audio signal processing means 8 is input to the delay means 31 to delay the signal. This is to generate a time difference from the signal for the front speaker, and it is sufficient if it is several tens of msec.
This has the effect that the crosstalk component with the front speaker is aurally attenuated. The output of the delay means 31 is input to the amplification means 32.

In the amplifying means 32, the surround signal is amplified to an amplitude suitable for output. In addition, it is necessary to make a difference in output capability between when outputting to headphones and when outputting directly to speakers, and a switching circuit may be provided for that purpose.

Next, the output of the amplifying means 32 is input to the switching means 33 together with the addition signal output from the output selecting means 30. The control signal is also input to the switching means 33 from the output control means 37, and the switching output is selected. With this control signal, either the surround signal or the added signal is selected. The selected signal is output from the headphone output terminal 34 to the outside.

With such a configuration, sound is output to the sound output terminal located on the back of the device and the headphone output terminal provided on the front of the device, and the user can enjoy the reproduced sound.

Here, the control signal output from the output control means 37 will be described in more detail.

Now, when a signal is output from the output control means 37 to the output selection means 30 so as to output the front signal (a), the switching means 33 is simultaneously sent to the switching means 33.
The control signal is output so as to select the output (c).
As a result, an audio signal for a front speaker is output from the normal audio output terminal 40, and an audio signal for surround is output from the headphone output terminal 34. Therefore, if an amplifier for a rear speaker or a direct speaker is connected to the headphone output terminal 34, an effective sound field space can be set together with the sound of the front speaker, and the sound effect can be enjoyed two-dimensionally. it can. In this case, if the user wants to clear the rear speaker system without using the rear speaker system, the connection to the headphone output terminal 34 on the front can be easily performed without changing the rear surface of the device.

In this case, if a wireless transmitting means such as infrared rays is connected to the headphone output terminal, and the signal is received by the rear speaker system, the setting can be further easily performed.

Further, a detection signal can be input to the output control means 37 from the headphone jack detection means 35. According to this, when a headphone jack is inserted, a front signal is output from the audio output terminal 40 and a surround signal is output from the headphone output terminal 34. The audio output is switched at the beginning.

In this case, when no jack is inserted, the front signal and the surround signal are synthesized and output from the front speaker as a normal output, so that the reproduced sound can be enjoyed without any problem.

Further, although a wiring jack for connecting a surround speaker has been inserted into the headphone output terminal 34, normal headphones may be used in some cases. Therefore, the output control means 3
The output of the switch 36 is input to 7. That is, when the headphones are attached to the headphone output terminal 34, the switch 36 is manually operated, and the selection of the switching means 33 is switched from the output control means 37 to the addition signal (d). Can listen to the added signal.

Further, the output of the audio channel detecting means 39 may be input to the output control means 37.

The audio channel detecting means 39 detects that a reproduced audio signal does not include a surround signal. For example, audio channel detecting means 3
No. 9 outputs a detection signal because only one set of signals is recorded when the reproducing device reproduces a CD. Alternatively, even if it is a DVD or the like, if there is no surround signal, a detection signal is output. In addition, even if it is one set of signals, if the audio signal processing unit 8 can separate the signals into different signals, no detection signal is output. When such a detection signal is input to the output control means 37 and a single signal is reproduced, if a control signal is generated so that the addition output (d) is selected by the switching means 33, a CD or the like can be obtained. Is reproduced, no signal is output to the headphone output terminal 34, and the headphone can be operated as a normal headphone output.

As described above, according to the present embodiment, a surround sound signal can be output from the equipped headphone output terminal at any time, so that the surround system can be set without troublesome wiring. -It has the effect that exclusion can be easily implemented. further,
If nothing is connected to the headphone output terminal,
There is also an advantage that an environment in which ordinary synthesized speech can be viewed can be provided.

In the above-described embodiment, it is apparent that the same effect can be obtained even when the headphone output terminal is arranged not only on the front surface but also on the side surface / top surface near the front surface.

Further, as an apparatus capable of reproducing a plurality of audio signals, an apparatus in which a recording medium reproduces an optical disk such as an LD or a DVD has been exemplified. However, the present invention is not limited to this. It may be a recording / reproducing device (for example, a video tape recorder) or a tuner device (for example, a digital satellite broadcast receiving tuner) for detecting and reproducing a broadcast wave carrying a plurality of audio signals. In addition, an apparatus for reproducing a video signal has been described as an example, but it is needless to say that the present invention is not limited to this.

[0038]

As described above, the present invention has a reproducing means capable of reproducing a plurality of sounds, an output means for headphones to which headphones can be attached, and an audio output means located on the back of the reproducing apparatus. Since the headphone output means is configured to output a sound signal different from the sound output from the sound output means, a surround sound signal can be output from the equipped headphone output terminal at any time. It is possible to easily set and remove the surround system without bothering.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an audio playback device according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional audio reproducing apparatus.

[Explanation of symbols]

 Reference Signs List 1 disc 8 audio signal processing means 30 output selection means 31 delay means 32 amplification means 33 switching means 34 headphone output terminal 35 headphone jack detection means 36 switch 37 output control means 39 audio channel detection means 40 audio output terminal

Claims (2)

[Claims] 1. An audio reproducing apparatus capable of reproducing a plurality of different audio signals, comprising: reproducing means for reproducing the plurality of audio signals; headphone output means to which headphones can be connected; Audio output means for outputting one of the audio signals reproduced by the reproduction means, and outputting an audio signal different from the audio signal output from the audio output means from the headphone output means. An audio reproduction device characterized by the above-mentioned. 2. An audio reproducing apparatus capable of reproducing a plurality of different audio signals, comprising: a reproducing unit capable of reproducing the plurality of audio signals; a headphone output unit to which headphones can be connected; Headphone detecting means, an adding means for adding a plurality of audio outputs reproduced by the reproducing apparatus, a selecting means for selecting an output of the adding means and at least one of a plurality of different sounds, Audio output means for outputting the output of the selection means to the outside, which is located on the back, and when the headphone detection means detects headphones, the audio output by the audio output means from the headphone output means When a different audio signal is output, and the headphone detection unit does not detect a headphone, the audio output unit includes:
An audio playback device that outputs an addition output.