JPS63100500A - Reproducer - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a playback device that can arbitrarily play back external sound waveform data recorded in an internal memory from a microphone or the like.

[Prior art] Recently, waveform data of external sounds such as natural sounds and musical instrument sounds is recorded from a microphone to an internal RAM (random access memory), and then the waveform data of external sounds such as natural sounds and musical instrument sounds is recorded from a microphone to an internal RAM (random access memory).
There are devices that read out the sound at a speed corresponding to the pitch of each operation key and emit a sound with a scale (for example, Japanese Patent Laid-Open No. 54
-161313 publication).

Also, turn the turntable with the record on it by hand,
Some sound effects are created by playing the sound recorded on a record slowly, quickly, or even backwards.

[Problems with the prior art] However, in the former prior art, the external sound recorded in the RAM is simply read out mechanically at a speed corresponding to the pitch of the keyboard, so it is not suitable for w1 board performance. Good, but
Humans cannot freely manipulate and reproduce external sounds,
It's lacking in fun.

Also, it is not possible to play external sounds in RAM in reverse.

Theoretically, it is possible, but since the readout control means is a keyboard, reverse playback is actually not possible.

Furthermore, it is not allowed to freely vary the playback speed.
The scale tones of each scale are simply read out at a constant readout speed, which is not very interesting.

On the other hand, in the latter conventional technology, the source of the sound is sweat recorded on a record, so the sound is always the same and has the problem of becoming boring.

[Purpose of the Invention] This invention has been made in view of these conventional problems, and it is possible to vary the playback speed of various external sounds, and also allows reverse playback, making it extremely easy for the operator. An object of the present invention is to provide a playback device that can freely generate sound effects that suit the user's intentions.

[Summary of the Invention] In order to achieve such an object, the present invention reads external sound waveform data stored in a storage means at a readout address determined based on the operation output fl accompanying the operation of a variable operation means such as a volume switch. The main point is that the signal is read out and reproduced from the external sound generating means.

[First Example] Hereinafter, the first example of the present invention will be explained with reference to FIG. 111 and FIG.
An example will be explained.

In Figure 1, l is a microphone, and external sounds such as natural sounds and musical instrument sounds taken in from this microphone l are filtered to the amplifier 2.
The data is input to the A/D converter 3 via the A/D converter 3 and becomes digital data. Then, it is given to the write circuit 4, and under its control,
RAM (random access memory) 5 as audio data
are written and recorded sequentially. Note that the address of the RAM 5 is now 00ooHNFFFFH in hexadecimal notation.

On the other hand, the bender 6 as a variable operation means is provided to make the readout address variable according to the output value when reproducing the external sound waveform data recorded in the RAM 5 as described above. The output value is converted into digital data by the A/D converter 7 and provided to the readout circuit 8. Then, the readout circuit 8 generates corresponding readout address data, addresses the RAM 5 with the readout address data, reads out external sound waveform data in the area corresponding to the address position t, and provides it to the D/A converter z9. . Therefore, the corresponding analog data is outputted and emitted as reproduced sound from a speaker (not shown) via the filter amplifier 10.

In this case, the relationship between the output voltage value of the bender 6 and the address of the RAM 5 is set to be a proportional relationship, as shown in FIG. 2, for example. That is, in this example, as the operation output value associated with the operation of the vendor 6 increases, the address data increases in proportion to it.

Next, the operation will be explained. First, external sound waveform data such as arbitrary natural sounds is recorded in advance from the microphone 1 into the RAM 5.
In this case, after setting the write mode, the external sound input from the microphone 1 is passed through the filter 1 amplifier 2 to the A/D converter 3.
is given to the address 00008 of the RAM 5 as digital external sound waveform data under the control of the write circuit 4.
~FFFFH are sequentially written.

Next, when reproducing the external sound waveform data written in this manner, after setting the read mode, the bender 6 is operated by manually moving it up and down. At this time, the output voltage value of the bender 6 is converted into digital data by the A/D converter 7 in real time, and is provided to the RAM 5 as address data by the readout circuit 8. Therefore, the external sound waveform data stored in the area corresponding to the address is read out, converted into analog data by the D/A converter 9, and further emitted as external sound via the filter amplifier 10 and the speaker.

In that case, the relationship between the output voltage value of the bender 6 and the address data of the RAM 5 is as shown in FIG.
Furthermore, if the address is larger, the external sound waveform data of the larger address is read out.

By moving the bender 6 up and down, the playback direction can be freely changed between the forward and reverse directions, and extremely effective external sound can be freely generated.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4. In this second embodiment, addressing of the RAM 5 is directly performed based on the operation output value of the operation of the digital volume 11. This digital volume 11 is a variable volume,
It plays the same role as the pentadata 6 of the first embodiment. Also, since it is a digital volume, the A/D converter 7 of the first embodiment. The readout circuit 8 is not required and the RAM 5 is directly addressed with its output value. Further, the relationship between the output value of the digital volume 11 and the address of the RAM 5 is as shown in FIG. That is, the relationship between the output value of the penter 6 and the address of the RAM 5 in the first embodiment is the same.

Since the operation is the same as in the first embodiment, its explanation will be omitted.

[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIG. As is clear from the drawings, in this third embodiment, the displacement amount or displacement speed accompanying the operation of the bender 6 is A/D converted, the digital data is converted into a displacement speed by a displacement speed calculation circuit 12, and the readout circuit 8.

Therefore, the RAM 5 will be addressed at a speed corresponding to the speed at which the bender 6 is moved up and down. In other words, the address is specified according to the displacement speed or displacement amount of the Pengu 6 output. In this case, if the displacement speed or displacement amount is large, for example, a large address position t
is specified, and if it is small, a smaller address position l is specified. Of course, the opposite may also be true.

A modulation wheel may be used instead of the bender in the operation of the third χ embodiment, or various other operating elements or members may be used.

[Effect of the invention] As explained above, this invention has the following advantages. Since the external sound waveform data such as natural sounds and musical notes stored in each row is read out and reproduced based on the operation output value associated with the operation of the variable operation means such as the volume switch, the variable operation means By freely manipulating the It has the advantage of being able to freely play sound effects.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a circuit diagram thereof, FIG. 2 is a diagram showing the relationship between the address of RAM 5 and the output value of vendor 6, and FIG. 4 shows the embodiment shown in FIG. 2, and FIG. 3 is its circuit configuration diagram,
Figure 4 shows the address of RAM5 and digital volume 1.
FIG. 5 is a circuit configuration diagram of the third embodiment. l...Microphone, 2.10...Filter amplifier, 3.7...A/D converter, 4. Old...
・Writing circuit, 5...RAM, 6...Pengu, 8-...Reading circuit, 9...D/
Af converter, 11. Old...Digital volume, 12.
...Displacement speed calculation circuit.

Claims (3)

[Claims] (1) A storage means for storing waveform data of external sound, a variable operation means capable of variable operation, and based on the operation output value accompanying the operation of this variable operation means,
generating a read address signal for the storage means;
a reading means for reading out external sound waveform data stored in the storage means based on the readout address signal; and an external sound generator for generating an external sound based on the external sound waveform data read from the reading means. A reproducing device comprising: means; (2) The readout means reads out the external sound waveform data stored in the storage means using a readout address signal determined based on the magnitude of the operation output accompanying the operation of the variable operation means. A reproduction device according to claim 1. (3) The above-mentioned reading means reads out the external sound waveform data stored in the above-mentioned storage means using a read-out address signal determined based on the operation displacement speed accompanying the operation of the variable operation means. The reproduction device according to scope 1.