JP2014191253A - Audio reproduction apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an audio reproduction apparatus capable of eliminating a problem that, when audio input signals get smaller instantaneously, only acoustic effect sounds such as sound reverberation are heard.SOLUTION: The audio reproduction apparatus includes; an acoustic effect generation unit 101 that generates acoustic effect sounds from audio input signals; an adder 102 that adds audio input signals and acoustic effect sounds; and an acoustic effect controller 103 that controls the acoustic effect sounds from the audio input signals. With this, a period in which only the acoustic effect sounds such as sound reverberation are heard is appropriately detected from the audio input signals and the acoustic effect sounds are muted. Thus, a discomfort that only acoustic effect sounds such as sound reverberation are heard is eliminated.

Description

  The present invention relates to an audio reproducing apparatus having a sound effect adding function.

  2. Description of the Related Art As an audio apparatus having a conventional sound effect addition function, an audio signal reproduction apparatus having a configuration in which a control unit performs sound effect addition control and muting control in conjunction with reproduction side control is known (for example, Patent Document 1). reference).

Japanese Patent No. 4003050

  However, the conventional audio device having the sound effect addition function has a problem that the control for muting the sound effect addition function is delayed because the control of the sound effect addition is linked with the control on the reproduction side. It was.

  The present invention has been made to solve the conventional problems, and it is an object of the present invention to provide an audio device having an acoustic effect adding function capable of controlling an acoustic effect at an appropriate timing without delay by analyzing an audio input signal. And

  To achieve the above object, the present invention controls an acoustic effect generator that generates an acoustic effect, an adder that adds an acoustic input signal generated from the acoustic effect generator and an audio input signal, and the acoustic effect generator. The sound effect controller is configured.

  According to the present invention, since the addition of the sound effect signal is controlled at an appropriate timing from the audio signal analysis result, there is an effect of preventing an uncomfortable sound that only the sound effect added sound can be heard.

The block diagram of the audio reproducing apparatus which has the sound effect addition function in embodiment of this invention

  Hereinafter, an audio reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram of an audio playback apparatus according to an embodiment of the present invention.

  In FIG. 1, an audio playback device 100 is configured to input from an audio signal sent from a CD playback deck circuit or the like and output it to an audio speaker device.

The audio playback device 100 adds a sound effect generator 101 that generates a sound effect from an audio input signal input from a CD playback deck circuit, and the sound effect signal generated by the audio input signal and the sound effect generator 101. An adder 102 and an acoustic effect controller 103 that controls the acoustic effect generator 101 are configured.

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

  First, an audio input signal input from a CD playback deck circuit or the like is input to the sound effect generator 101.

  The sound effect generator 101 generates a sound effect signal such as a reverberation effect from the audio input signal.

  The sound effect signal generated from the sound effect generator 101 and the audio input signal are input to the adder 102.

  The adder 102 adds the sound effect signal and the audio input signal, and outputs a signal with the sound effect added as an audio output signal.

  In this way, by adding an acoustic effect such as reverberation, a sense of reality can be improved.

  However, in the case of processing in which an acoustic effect such as reverberation lasts for a certain period of time, if the input signal suddenly becomes a small signal, the acoustic effect signal such as reverberation may become larger.

  In such a case, it is considered that only a sound effect signal such as reverberation can be heard, giving a sense of incongruity to the user.

  Further, in order to surely prevent a sense of incongruity, it is necessary to analyze the audio input signal without interlocking with the reproduction control.

  For this purpose, an acoustic effect controller 103 is provided. An audio input signal is input to the sound effect controller 103.

  The sound effect controller 103 performs mute control on the sound effect generator 101 when the audio input signal falls below a certain threshold.

  The mute control is to initialize the internal memory of the sound effect generator 101 and mute the output signal of the sound effect generator 101.

  In addition to the audio input signal, control may be performed to mute the sound effect generator 101 when the ratio of the audio input signal and the sound effect signal falls below a threshold value.

  When the sound effect generator 101 is subjected to mute control by the sound effect controller 103, the audio input signal is output as it is without adding the sound effect.

As described above, according to the present embodiment, the sound effect generator that generates sound effect sound from the audio input signal, the adder that adds the audio input signal and sound effect sound, and the sound effect sound from the audio input signal. By providing a sound effect controller to control, the period when only sound effects such as reverberation can be heard is properly detected from the audio input signal, and the sound effects are muted, so only the sound effects such as reverberation can be heard. Can be prevented.

  The audio playback device of the present invention, when adding a sound effect such as reverberation to the audio input signal, appropriately mute the sound effect sound during a period in which only the sound effect sound such as reverberation is heard from the audio input signal. It is useful as an audio reproducing apparatus having an effect of preventing only the sound effect sound from being heard and having an additional function of the sound effect.

DESCRIPTION OF SYMBOLS 100 Audio reproduction apparatus 101 Sound effect generator 102 Adder 103 Sound effect controller

Claims (2)

  An audio effect generator that generates an audio effect signal from an audio input signal, an adder that adds the audio input signal and the audio effect signal generated from the audio effect generator, and the audio effect generator as the audio input signal An audio reproduction device comprising a sound effect controller that performs mute control based on the above.   The sound effect controller mutes the sound effect generator when a ratio between the audio input signal or the audio input signal and the sound effect signal becomes a predetermined threshold value or less. Item 2. The audio playback device according to Item 1.

Images