JP3240618B2 - Playback device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a reproducing apparatus.

[Summary of the Invention]

According to the present invention, in a reproducing apparatus having an effect function, an effect circuit is provided to an effect circuit based on a switching position of a switch means for selecting one audio signal from a plurality of audio signals and identification information indicating a type of the selected audio signal. By setting control data, an optimal effect can be obtained automatically.

[Conventional technology]

Sources of audio equipment include television broadcast tuners, video disc players, CD players, FM tuners, cassette decks, and the like, but the output levels of these sources vary, especially when the manufacturers are different.

Further, even if the output level is set to a constant value, the dynamic range and the S / N vary depending on the source, so that the level on the audibility differs.

Furthermore, some software programs make sounds for a specific playback device, for example, a popular device, and this may be an obstacle for a playback device that is not targeted.

Therefore, the audio device is provided with an effect circuit such as a graphic equalizer or a surround processor, so that the sound output from the speaker can be freely changed according to the type of the source, the preference of the listener, and the like.

[Problems to be solved by the invention]

However, the conventional effect circuit has a preset function, but it is necessary to change the preset data every time the source is switched.

However, this is inconvenient, and therefore, the conventional effect circuit has been difficult to use.

The present invention is intended to solve such a problem.

[Means for solving the problem]

For this reason, according to the present invention, in the reproducing apparatus having the effect function, based on the switching position of the switch means for selecting one audio signal from the plurality of audio signals and the identification information indicating the type of the selected audio signal. , Control data is set in the effect circuit.

[Action]

When the switch means is switched to select an audio signal, the control data is set in the effect circuit based on the switching position of the switch means and the identification information indicating the type of the selected audio signal. The optimal effect is obtained.

〔Example〕

In FIG. 1, the audio signal system is shown for only one stereo channel for simplicity, but the other channel is similarly configured.

(1) to (5) show various sources. In this example, (1) is a satellite broadcast tuner, (2) is a player of a video disc, (3) is a CD player, and (4)
Is an FM tuner, and (5) is a tape deck.

Then, audio signals from these sources (1) to (5) are supplied to an input switch circuit (11) to select one of the audio signals, and the selected audio signal is supplied to an attenuator (for volume adjustment). The signal is supplied to the effect circuit (14) through the signal line of (12) and the preamplifier (13).

The effect circuit (14) includes an A / D converter (41) for A / D converting the input audio signal, and a DSP (digital converter) for performing an effect process on the output signal.
A signal processor) (42) and D / A converters (43) and (44) for D / A converting the output signal. The DSP (42) controls (signal processing) items such as a level (graphic equalizer) for each band, a surround effect, a dynamic range, and an auxiliary level of a signal. Also,
From the DSP (42), a signal subjected to signal processing such as a surround effect is extracted through a D / A converter (44).

And the audio signal from the converter (43)
The audio signal from the converter (44) is supplied to the rear speaker (18) through the power amplifier (17), while being supplied to the front speaker (16) through the power amplifier (15).

Reference numeral (20) denotes a microcomputer. The microcomputer (20) has a signal indicating the mode from the sources (1) to (5), for example, a mode A if the signal is from the satellite broadcast tuner (1). , Or a mode B signal.

The microcomputer (20) has an input selector switch Ss
And preset data write switch Sw and DSP (4
With a switch S ₁ to Sn are connected for each control item 2), non-volatile memory for preset data memory (2
1) is connected.

In this case, the memory (21), for example, as shown in models manner in Figure 2, the preset data D ₁₁ to D ₅ n of each control item in the DSP (42) is, for each source (1) to (5) It has been written.

Then, the control signal is supplied from the microcomputer (20) to the switch circuit (11), and the control data is supplied to the DSP (42).

In such a configuration, when the switch Ss is switched, this is determined by the microcomputer (20), and the switch circuit (11) is switched according to the determination result, and the switch Ss among the sources (1) to (5) is switched.
Is supplied to the attenuator (12).

Therefore, the listener can select and listen to the sources (1) to (5) by the switch Ss.

Further, at this time, corresponding preset data Di _{1 to} Din are read from the memory (21) according to the switching position of the switch Ss and the mode of the source selected by the switch circuit (11). For example, if when the switch Ss is selecting satellite tuner (1), data D ₁₁ to D ₁ n are read from the memory (21).

Then, the read data Di ₁ through Din is set is supplied from the microcomputer (20) to the DSP (42). Therefore, at this time, the audio signal supplied to the speakers (16) (and (18)) is
The effect is given according to the data Di _{1 to} Din.

That is, the selection of the sources (1) to (5), the reading of the data Di _{1 to} Din from the memory (21), and the setting to the DSP (42) are performed according to the switching position of the switch Ss. Optimal effects for each of the sources (1) to (5) can be obtained automatically.

When the switches S _{1 to} Sn are operated while an arbitrary source is being selected for listening, the DSP (4
Since the data Di ₁ through Din supplied to the 2) is changed, this effect in real time is changed by.

Moreover, pressing the switch Sw, this time DSP (42) to supply the displayed data Di ₁ through Din is written into the corresponding location in the memory (21) (address).

Therefore, any effect can be preset for any source.

Thus, according to the present invention, the data D _{11 of the} DSP (42)
To D ₅ n the stores for each source (1) to (5), of these data D ₁₁ to D ₅ n, the source is selected (1) -
Since the data corresponding to (5) is set in the DSP (42), even if the sources (1) to (5) are switched, an effect optimal for that source can be obtained.

In the above description, the switch circuit (11) may be a mechanical switch, and the switch Ss may be linked to this switch.

〔The invention's effect〕

According to the present invention, the control data is set in the effect circuit based on the switching position of the switch means for selecting one audio signal from the plurality of audio signals and the identification information indicating the type of the selected audio signal. , You can automatically get the best effect.

[Brief description of the drawings]

FIG. 1 is a system diagram of an example of the present invention, and FIG. 2 is a diagram for explaining the system. (1) to (5) are sources, (11) is an input switch circuit,
(14) is an effect circuit, (41) is an A / D converter, (4)
2) DSP, (43), (44) D / A converter, (16),
(18) is a speaker, (20) is a microcomputer,
(21) is a memory for preset data, Ss is an input selector switch, Sw is a preset data write switch,
S _{1 to} Sn are switches.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H03G 5/00-11/08 G11B 20/00

Claims (1)

(57) [Claims] A switching means for selecting one of the audio signals from a plurality of audio signals; an effect circuit to which the audio signal selected by the switching means is supplied; and control data set in the effect circuit. A circuit, and the control data, a switching position of the switch means,
A memory which is supplied together with the audio signal selected by the switch means and stores the audio signal in association with identification information indicating the type of the audio signal; and from the memory, the switching position of the switch means and the switch means A playback device that reads out the control data based on the identification information of the selected audio signal and sets the read out control data in the effect circuit.