JPH03168800A - Microphone device and loudspeaking device - Google Patents

Abstract

PURPOSE:To enjoy music even by an orchestral accompaniment device which does not have a means for giving a variation to a voice by providing a 1st output means which outputs a voice signal not through an interval converting circuit and a 2nd output means which outputs the signal through the interval converting circuit supplying the voice signal to the 1st output means or the 2nd output means in an alternative way. CONSTITUTION:A 1st interval converting circuit H1 converts the interval of the voice signal to a high pitch side by one octave and a 2nd interval converting circuit L1 converts the interval to a low pitch side by one octave. Then when the voice is reinforced and outputted from a speaker 7 as it is, a slide switch SW 2 is connected to the side of a contact A and the device is put in operation while a push-button switch is in a nonconduction state. When the interval of the voice is converted to the high-pitch side, a channel changeover switch SW 3 is connected to the side of a contact B and when the voice is converted to the low pitch side, the channel changeover switch SW 3 is connected to the side of a contact A. Consequently, the speaker's voice can be varied in interval to the high and low pitch side freely and the operator satisfies his or her playing taste sufficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a microphone device equipped with a pitch conversion circuit and a public address system equipped with the microphone device. (B) Prior Art A conventionally known microphone device consists of a microphone and a cord or wireless transmitter connected to the microphone, and is not equipped with a means for selectively converting pitch. Therefore, the voice emitted into the microphone is
The microphone converts the signal into an audio signal and outputs it, and the audio and the audio signal are associated with each other in a certain relationship. On the other hand, in audio equipment called karaoke equipment, the equipment itself is equipped with a means for applying changes such as echo to the audio, which satisfies the operator's sense of fun to a certain extent. However, there are many karaoke machines that are not equipped with such means. (c) Problems to be Solved by the Invention As mentioned above, in the conventional technology, the device itself is equipped with a means for changing the sound, and the microphone is not equipped with such a means. If the karaoke machine was not equipped with a The present invention has been made in view of the drawbacks of the conventional technology, and by providing a pitch conversion circuit on the microphone device side, it is possible to use a karaoke device that is not equipped with a means for changing the sound. The aim is to realize a microphone device that can be fully enjoyed. (2) Means for Solving the Problems The first main invention is a microphone device equipped with a microphone and a pitch conversion circuit that converts the pitch of an audio signal output from the microphone. a first output means for outputting the signal as it is; a second output means for outputting the audio signal from the microphone via the pitch conversion circuit; and a selection of the audio signal from the microphone for the first output means and the second output means. The device is characterized in that it is equipped with means for switching audio signals that are supplied uniformly. The second main invention is a microphone, a pitch conversion circuit that converts the pitch of an audio signal output from the microphone, and a first pitch conversion circuit that outputs the audio signal from the microphone as it is.
a second output means for outputting the audio signal from the output means and the microphone via the pitch conversion circuit; and an audio signal switch for selectively supplying the audio signal from the microphone to the first output means and the second output means. With the means. There is a public address system equipped with an amplifier circuit for amplifying output signals from the first output means and the second output means, and a speaker to which the output signals from the amplifier circuit are input. (E) In the first main invention, the first output means outputs the audio signal from the microphone as it is, the second output means outputs it via the pitch conversion circuit, and the audio signal from the microphone is outputted from the first output means. Since it is equipped with an audio signal switching means that selectively supplies the audio signal to the output means and the second output means, when outputting the audio as it is, the first output means is executed and the pitch of the audio is converted. In the case of outputting, the second output means may be executed.In the second main invention, the first main invention includes an amplifier circuit and a speaker to which the output signal from the amplifier circuit is input. Since it is added, the sound can be amplified by itself or after pitch conversion without preparing other speakers etc. The figure is a plan view of the main part, Fig. 2 is a perspective view showing the state of use, and Fig. 3 is a circuit diagram. ). 4 is a microphone switch. The pitch converter 2 is connected to a jack 6 via another cord 5 (see FIG. 1).The pitch converter 2 is connected to a jack 6 via another cord 5. A slide switch SW2, which is a two-contact switch for changing pitch, and a pushbutton switch SWI, which is a one-contact switch, are connected in parallel.The pushbutton switch SW1 has a normally open contact C, and the slide switch SW2 has a normally open contact C. is configured to selectively switch between contact A and contact B. Contact B of the slide switch SW2 is connected to one input terminal of the first exclusive OR gate ORI, and contact A is connected to the second exclusive OR gate ORI. The normally open contact C of the pushbutton switch sw1 is connected to the other input terminal of the first exclusive OR gate ○R1 and the second exclusive OR gate OR2. The output terminal of the first exclusive OR gate oR1 is connected to the channel selection switch SW3.
The channel changeover switch SW3 is constituted by a two-contact slide switch, and the contact B of the channel changeover switch SW3 is connected to the first pitch conversion circuit H1, and the contact A is connected to the second pitch conversion circuit L1. ing.
The first pitch conversion circuit H1 is configured to pitch-convert the audio signal by one octave to the treble side in real time, and the second pitch conversion circuit L1 is configured to pitch-convert the audio signal by one octave to the bass side in real time. It is structured as follows. Both the first pitch conversion circuit Hl and the second pitch conversion circuit Ll are, for example, pitch conversion LS I manufactured by Oki Electric Co., Ltd.
rMsM6322” is suitable. This LSI converts the pitch of an audio signal in real time within a range of one octave above and below, and changes the pitch in 17 steps using two manual switches, and selects one of 16 steps using four binary inputs. Two types of pitch control methods can be alternatively adopted. The output terminal of the second exclusive OR game }OR2 is connected to one input terminal of the AND game }ANDI. The output terminal (cord 3) from the microphone 1 is connected to the first pitch conversion circuit H1, the second pitch conversion circuit L1 and the AND game}AN.
Connected to the other input terminal of D1. Further, the first pitch conversion circuit Hl and the second pitch conversion circuit L
1 and the output terminals of the AND gate AND1 are respectively connected to a speaker 7 via an amplifier circuit AMP1.
Note that you may connect headphones or earphones instead of the speaker 7. An audio device 8 such as a so-called karaoke device is connected to the amplifier circuit AMP 1. Therefore, when outputting the sound as it is from the speaker 7, the state shown in FIG. 3, that is, the slide switch SW2 is
It is sufficient to operate the device with the contact A being electrically connected and the pushbutton switch SWI being non-conducting (non-pressed state). Then, since no signal is input to both input terminals of the first exclusive OR gate ○R1, no signal is output from the first exclusive OR gate ORI, and only one input terminal of the second exclusive OR gate OR2 is output. Since a signal is input to , a signal is output from the second exclusive OR gate ○R2. In this way, a signal is input to one input terminal of the AND gate AND1, and the audio signal from the microphone 1 passes through the AND gate AND1 and is input to the amplifier circuit AMP1.
is input to speaker 7 via. Therefore, the sound is directly amplified from the speaker 7. Next, we will explain the case of converting the pitch of audio to a higher pitch. First, when the channel selection switch SW3 is made conductive to the B contact side and the push button switch SWl is made conductive, (
), the second exclusive or game}O
Since signals are input to both input terminals of R2, the second
EXCLUSIVE OR GATE}While no signal is output from OR2, the first exclusive OR gate oR
1, the signal is input only to the other terminal, so the signal is output only from the first exclusive or game ORI, and only the first pitch conversion circuit H1 operates, and the sound is shifted one octave to the higher pitch side. This will be converted and amplified from speaker 7. That is, when the pushbutton switch SW1 is pressed while the sound is being amplified and output from the speaker 7 as described above, the pitch of the output sound is changed to the high pitch side only while the pushbutton switch SW1 is pressed. The sound will be amplified from Ka7. In this case, it is also possible to convert male voices to female voices, or convert one's own voice to the voice of a specific singer or actor. In addition, if the contact of the slide switch SW2 is made conductive to the B side and the device is operated with the pushbutton switch SWI in a non-conductive state (non-pressed state), a signal will be output from both input terminals of the second exclusive OR game OR2. Since it is not entered,
No signal is output from the second exclusive OR game OR2, and the signal is input to only one input terminal of the first exclusive OR game ORI.
EXCLUSIVE OR GAME} A signal is output from ORI. In this way, only the first pitch conversion circuit Hl operates, and the voice is converted to one octave higher pitch and input to the speaker 7. Therefore, the output sound is always converted to the high pitch side and amplified from the speaker 7. In this state, when the pushbutton switch SWI is pressed to make it conductive, the first exclusive or game
Since signals are input to both input terminals of RI, the first
Exclusive or Game} No signal is output from ORI. On the other hand, the second exclusive or game
Since a signal is input only to the other terminal of R2, the signal is output only from the second exclusive OR gate OR2, and the audio signal from the microphone 1 passes through the AND gate ANDI and is transmitted through the amplifier circuit AMPI. is input to speaker 7. Therefore, the sound is directly amplified from the speaker 7. That is, if the pushbutton switch SWI is pressed while the output sound is pitch-converted to the high-pitched side and amplified output is being outputted from the speaker 7 as described above, the output sound will be pitch-converted only while the pushbutton switch SWI is pressed. Instead, the sound will be amplified from speaker 7. Next, if the pitch of the audio is to be changed to the bass side, the channel changeover switch SW3 may be electrically connected to the A contact side. Then, the second pitch conversion circuit L1 selectively operates, and the output voice whose pitch has been converted to one octave lower and the output voice which has not been pitch-converted, are output as follows.
The sound will be selectively amplified from speaker 7. In this case, push button switch SWI and slide switch SW
The second operation mode is the same as described above. In this case, it is also possible to convert female voices to male voices. (G) Effects of the Invention In the present invention, since the microphone device is equipped with a pitch conversion circuit, even when using a karaoke device that is not equipped with a means for changing the voice, the own voice can be converted in various ways at any time. You can enjoy it to the fullest. The above effect is particularly noticeable for those who prepare their own microphones and use the karaoke equipment in various locations. The present invention also includes: a pitch conversion circuit that converts the pitch of an audio signal output from the microphone; a first output means that outputs the audio signal from the microphone as it is; and a pitch conversion circuit that converts the pitch of the audio signal output from the microphone. and an audio signal switching means for selectively supplying the audio signal from the microphone to the first outputting means and the second outputting means. This makes it possible to freely change the pitch to low or low tones, fully satisfying the operator's sense of fun.

[Brief explanation of the drawing]

The drawings all show one embodiment of the present invention, and FIG. 1 is a plan view of the main parts, FIG. 2 is a perspective view showing the state of use, and FIG. 3 is a circuit diagram.

Claims (11)

[Claims] 1. In a microphone device equipped with a microphone and a pitch conversion circuit that converts the pitch of an audio signal output from the microphone, a first output means that outputs the audio signal from the microphone without going through the pitch conversion circuit. a second output means for outputting the audio signal from the microphone via the pitch conversion circuit; and an audio signal switching means for selectively supplying the audio signal from the microphone to the first output means and the second output means. A microphone device comprising: 2. 2. The microphone device according to claim 1, wherein the pitch conversion circuit is configured to convert the pitch of the audio signal to a high pitch. 3. Claim 1 or Claim 2, wherein the pitch conversion circuit is configured to pitch-convert a male voice to a female voice.
Microphone device as described. 4. 2. The microphone device according to claim 1, wherein the pitch conversion circuit is configured to convert the pitch of the audio signal into a bass pitch. 5. Claim 1 or Claim 4, wherein the pitch conversion circuit is configured to pitch-convert a female voice to a male voice.
Microphone device as described. 6. a first pitch conversion circuit configured to convert the pitch of an audio signal to a high pitch; a second pitch conversion circuit configured to convert a pitch of the audio signal to a low pitch; 2. The microphone device according to claim 1, further comprising channel switching means for switching between the first pitch conversion circuit and the second pitch conversion circuit. 7. 7. The microphone device according to claim 1, wherein the audio signal switching means comprises at least two switches, one of which is a two-contact switch and the other switch is a one-contact switch. 8. 8. The microphone device according to claim 1, wherein the microphone and the pitch conversion circuit are detachably connected. 9. 9. The microphone device according to claim 1, wherein the pitch conversion circuit and the audio signal switching means are provided at a position separated from the microphone via a cord. 10. a microphone; a pitch conversion circuit that converts the pitch of an audio signal output from the microphone; and a first pitch conversion circuit that outputs the audio signal from the microphone as it is.
an output means, a second output means for outputting an audio signal from the microphone via the pitch conversion circuit, and an audio signal for selectively supplying the audio signal from the microphone to the first output means and the second output means. A public address system comprising: a switching means; an amplifier circuit for amplifying output signals from the first output means and the second output means; and a speaker to which the output signals from the amplifier circuit are input. 11. The public address system according to claim 10, which is connected to audio equipment.