JPH01277894A - Effective sound generating device - Google Patents

Abstract

PURPOSE:To improve auditory effect by outputting a delay reverberation sound between the final delay reverberation sound in a delay limit time before the delay reverberation sound and the delay limit time when the delay reverberation sound exceeds the specific delay limit time. CONSTITUTION:A delay time generation part 1 and an initial delay time addition part 3 sets a delay time and an initial delay time properly and then when the reverberation sound of, for example, the latest delay time is set exceeding the delay limit time, the total delay time of a comparison part 5, i.e., delay time of the latest reverberation sound is compared with the delay limit time. Then, when the delay reverberation sound exceeds the specific delay limit time, a setting part 7 sets the delay reverberation sound so that the delay reverberation sound is outputted between the final delay reverberation sound in the delay limit time before the delay reverberation sound and the delay limit time. Consequently, there is no discontinuous auditory variation and the auditory effect is improved sufficiently.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention is directed to artificially generating reverberant sound containing anti-04M so as to reproduce the reverberation effect of, for example, a four-note hall. The present invention relates to a sound effect generator.

(Prior art) This type of highly effective generating device, Rainbow, reproduces the reverberation effect caused by the reflected sound and reverberant sound generated when the direct sound generated directly from musical instruments and vocalists is reflected by the surrounding walls of concert halls, etc. In order to
(abbreviated as P) is used to generate reflected and reverberant sounds by performing complex sampling to reduce the volume level while delaying the direct sound by a desired amount of time.

Figures 5(a) and (b) show the sampled anti-O1l
This is a diagram showing multiple reverberant sounds including &, where time is plotted on the horizontal axis and sound level is plotted on the vertical axis. The delay time is gradually reduced. In FIG. 5(a), the delay time between each residual W sound is set to be relatively small, and this represents, for example, reverberant sound in a relatively small concert hall. On the other hand, FIG. 5(b) shows the reverberation sound in a large concert hall with a large delay time set between vestiges.

Further, FIGS. 6(a) and 6(b) are diagrams showing sampled reverberant sounds similar to FIG. 5.

In contrast to the residual VI sound shown in Figure 6(a), which is similar to Figure 5(a), Figure 6(b) shows the reverberation in which the initial delay time until the first residual 19g occurs is set to a large value. It shows the sound.

As shown in FIGS. 5 and 6, by using the DSP described above, the delay time and initial delay time between the generated residual wI sounds can be freely varied, making it easy to create a desired reverberation effect. Can be done.

(Problems to be Solved by the Invention) As mentioned above, the delay time of reverberant sound can be freely varied by using DSP, but since there is a limit to the variable range of the delay time, there is no limit to the range of variation of the delay time. If you try to vary it beyond this limit, for example, as shown in Figure 7, the slowest reverberation sound will exceed the delay limit time, and due to the wraparound of calculations in the DSP, the beginning of the reverberation sound will be delayed. This problem occurs as indicated by symbol A, resulting in unnatural reverberation that is undesirable to the auditory sense. It should be noted that, in an attempt to prevent such drawbacks, for example, reducing the circle height data or the 'f1 delay opening time variation width will eliminate the delay variable effect, which is also undesirable.

The present invention has been made in view of the above, and its purpose is to exceed the limit of the variable range of the delay time without changing the data or narrowing the variable range of the delay time. It is an object of the present invention to provide a sound effect generating device which is set so that the reverberation sound of a delay time has an auditory effect of -1-minute.

[Effects of the Invention] (Means for Solving the Problems) In order to achieve the above object, the sound effect generation vZi! of the present invention is provided.
I is a sound effect generating device that generates reverberant sound including reflected sound in order to reproduce the lingering effect of Song by sampling direct sound to reduce the sound field level while avoiding a desired time delay,
If the delayed reverberation sound exceeds a predetermined delay limit time, the delayed reverberation is set to be output between the last delayed reverberation sound within the delay limit time before the delayed reverberation sound and the delay limit time. The gist is to have the means.

(Function) In the sound effect generating device of the present invention, when the delayed residual VI & exceeds the predetermined delay limit time, the delayed reverberation sound is generated within the delay limit time before the delayed reverberation sound! 1! It is set to be output between the delayed reverberation sound of i and the delay limit time.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 is a block diagram showing the configuration of a sound effect generating device according to an embodiment of the present invention. The sound effect generating device shown in the figure is a device that generates reverberant sound to reproduce a reverberant effect using DSP, and includes a delay time generator 1 that generates delay time data of reverberant sound, and a delay time generator 1 that generates delay time data of reverberant sound, and An initial delay time addition section 3 that adds an initial delay time to the slowest delay time output from the generation section 1, and the sum of the initial delay time output from the initial delay time addition section 3 and the slowest delay time. A comparison unit 5 compares the total delay time with a predetermined delay limit time and determines whether the total delay time exceeds the predetermined delay limit time; a setting unit 7 that sets the reverberation sound having the latest delay time to be generated at the predetermined delay limit time;
and an output section 9 that outputs the delay limit time for the reverberant sound with the slowest delay time set by the setting section 7.

In the sound effect generating device configured as described above, as a result of appropriately setting the delay time and the initial I'I delay time in the delay time generating section 1 and the initial delay time adding section 3, for example, the above-mentioned sound effect shown in FIG. If the reverberation sound with the slowest delay time is set to exceed the delay limit time, conventionally the reverberation sound with the slowest delay time would appear discontinuously first, as shown by A in Figure 7. However, the total delay time in the comparing section 5, that is, the delay time of the slowest reverberant sound, is ′! l delay limit time is compared and the slowest delay 11'
Since it is determined whether or not the delay limit time has been exceeded, as in this example, if the delay limit time has been exceeded, the reverberation sound that is the latest that exceeds the delay limit time is generated at the delay limit time. Since the reverberation sound is set in the setting section 7 at J5, the latest reverberation sound is continuously generated at the delay limit time as shown by the symbol B in FIG. As a result, there is no discontinuous change in the audible sense, and the audible effect is sufficiently improved.

Note that the slowest reverberation sound that exceeds the delay limit time may occur at the delay limit time as described above, but the last delayed reverberation sound within the delay limit time before the late reverberation sound may also be generated. It may be made to occur between the delay limit time.

FIG. 3 is a block diagram of a sound effect generating device according to another embodiment of the present invention. The sound effect generating device shown in FIG. 1 has a separate setting section 70 instead of the setting section 7 in the device shown in FIG.
The point is that when the slowest reverberant sound that exceeds the delay limit time is generated, the volume level of the late reverberation sound is set to zero as shown by the dotted line in Fig. 4. They are only different. A similar effect can be achieved by setting the latest reverberation sound that exceeds the delay limit time to zero.

[Effect of the Invention 1] As explained above, according to the present invention, when a delayed reverberation sound exceeds a predetermined delay limit time, the delayed reverberation sound is transferred to the last delay within the delay limit time before the delayed reverberation sound. Since it is set to be output between the reverberation sound and the delay limit time, the delayed reverberation sound may change discontinuously or unintentionally, such as returning to the beginning, resulting in audible discomfort. This prevents the occurrence of noise, and the auditory effect can be sufficiently improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a sound effect generating device according to an embodiment of the present invention, FIG. 2 is a diagram showing changes in sampled reverberant sound showing the operation of the sound effect generating device of FIG. 1,
FIG. 3 is a block diagram of another embodiment of the present invention, FIG. 4 is a diagram showing changes in reverberant sound showing the operation of the sound effect generator of FIG. 3, and FIGS. 5 and 6 are diagrams showing changes in reverberant sound. FIG. 7, which is a diagram showing general changes, is a diagram showing reverberation sound to explain conventional problems. 1... Delay time generation section 3... Initial delay time addition section 5... Comparison section 7... Setting section 9... Output section 70... Setting section

Claims (1)

[Claims] A sound effect generating device that generates reverberant sound including reflected sound to reproduce a reverberation effect by sampling the direct sound to reduce the volume level while delaying the direct sound for a predetermined time, the delayed reverberant sound being sampled to reduce the volume level, An effect characterized by having a setting means for setting the delayed reverberation sound to be output between the last delayed reverberation sound within the delay limit time before the delayed reverberation sound and the delay limit time when the delayed reverberation sound exceeds the delay limit time. Sound generator.