JP2015100098A - Microphone for karaoke - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a microphone for karaoke capable of changing each normal singing position freely, in duet singing by single microphone.SOLUTION: Audio signals picked up by means of a unidirectional microphone element 21 and a bi-directional microphone element 22 are processed by audio signal processing means 23 to produce a first audio signal L and a second audio signal R. Control means 25 controls the normal position depending on the movable body position of an operator 24, where a movable body 15 is disposed on the housing 12 for the first audio signal and second audio signal, respectively, and mixing means 26 outputs the first audio signal and second audio signal while mixing at the normal position controlled by the control means 25.

Description

  The present invention relates to a karaoke microphone capable of stereo output used in a karaoke system.

  Conventionally, a karaoke microphone that outputs a monaural signal is usually used, and a single microphone is used to output a monaural signal regardless of whether one person sings or two persons sing. For example, when you sing duet with men and women, if you sing with two microphones, you can not enjoy the unique atmosphere of the duet singing. In this case, the sound field lacks power.

  On the other hand, various techniques related to so-called stereo microphones are known that collect sound in different directions with a single microphone and output a stereo signal. For example, in Patent Document 1, a unidirectional middle (M) microphone element and a bi-directional side (S) microphone element are arranged with their directional axes orthogonal, and outputs from these microphone elements. There is described a so-called MS stereo microphone that generates left and right signals by adding or subtracting signals to output a stereo signal. If such a microphone is used, it can be said that it is suitable for duet singing because stereo sound can be collected and output as a stereo signal by one microphone.

  On the other hand, an operator called a crossfader that switches between two audio signals as described in Patent Document 2 is known. When switching between two audio signals, this operator reverses the relationship between the fader operation position and the signal output level between the two audio signals, so that only one signal is transmitted at one operation end. In the central operation position, both signals are evenly mixed, and only the other signal is output at the other operation end.

JP 2011-166433 A Japanese Patent Laying-Open No. 2005-311258

  However, the stereo microphone as described in Patent Document 1 can obtain a sound field particularly suitable for a duet singing, but the localization of the two singing voice signals to be output is always fixed, so that the central localization and left / right alternation are performed. There is a problem that the localization cannot be changed instantaneously. Further, the crossfader described in Patent Document 2 simply switches the output while changing the mixing ratio of the two signals, and does not continuously change the localization of the two signals. Absent.

  Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a karaoke microphone that can freely change the position of each singing position during a duet singing with a single microphone.

  In order to solve the above-mentioned problems, the invention of claim 1 is a karaoke microphone used by a singer at the time of singing while reproducing karaoke music with a karaoke system. Each of the sound signal processing means for outputting the sound signal as a first sound signal and a second sound signal, an operator having a movable body disposed on the housing, and each of the first sound signal and the second sound signal On the other hand, the control means for controlling the localization according to the position of the movable body of the operating element, and the first audio signal and the second audio signal are mixed at the localization controlled by the control means and output as a stereo signal. And a mixing means.

  According to a second aspect of the present invention, when the movable body position of the operating element is at one end of the operation range, the control means localizes the first audio signal to the left and outputs the second audio signal most. If the position of the movable body of the operating element is substantially at the center of the operating range, control is performed so that both the first audio signal and the second audio signal are positioned in the center. When the movable body position is at the other end of the operation range, the first audio signal is localized to the right and the second audio signal is localized to the left.

  According to the present invention, the audio signals collected from the plurality of microphone elements are used as the first audio signal and the second audio signal, and the control means is provided on the housing for each of the first audio signal and the second audio signal. The control unit controls the localization according to the position of the movable body of the operation element on which the movable body is disposed. Specifically, when the position of the movable body of the operation element is at one end of the operation range, the first position is set. Control is performed so that the audio signal is localized to the left and the second audio signal is localized to the right, and when the movable body position of the operation element is substantially at the center of the operation range, the first audio signal and the second audio signal Both are controlled to be centered, and when the movable body position of the operating element is at the other end of the operation range, the first sound signal is localized to the right and the second sound signal is positioned to the left. Control to localize, the first audio signal and the first in the mixing means By adopting a configuration in which the audio signal is mixed at a position controlled by the control means and output as a stereo signal, the first audio signal and the second audio signal can be obtained by moving the movable body from the microphone side with a single microphone during a duet singing. The localization of each singing position as an audio signal can be freely changed, and as a result, the singing sound field according to the preference of the singer can be improved, and the satisfaction can be improved.

It is a block diagram of the microphone for karaoke which concerns on this invention. It is a block block diagram of the karaoke system in which the microphone for karaoke of the present invention is used. It is the circuit block diagram which showed an example of the microphone for karaoke of FIG. It is explanatory drawing of the localization control by the relationship between the operation element in a control means, and each audio | voice signal output state. It is a block diagram of another example of the microphone for karaoke according to the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of a karaoke microphone according to the present invention. FIG. 1A shows an external view of the karaoke microphone 11, and a plurality of microphone elements are arranged in a mesh-shaped outer covering portion 12 A on the upper side of the housing 12. In this embodiment, a bidirectional microphone element (ME-S) 21 and a unidirectional middle microphone element (ME-M) 22 as shown in FIG. It is assumed that the MS stereo microphone is provided orthogonally. Each microphone element is, for example, a capacitor type.

  Further, a power switch 13 is provided at a predetermined position of the gripping part 12B continuously to the mesh-shaped outer covering part 12A on the casing 12, and a long hole 14 is formed in the vicinity of the power switch 13 so that an operation scale is formed around the power switch 13. 14A is formed. The long hole 14 is formed as a length corresponding to a movable range of, for example, a fader (in this embodiment, a variable resistor) that constitutes a part of an operation element described later, and the movable body 15 connected to the fader thereby. Is arranged so as to be exposed. Then, two connection cords 16 and 17 for the audio signal L and the audio signal R are extended from the lowermost end of the housing 12. Note that although a wired microphone is used here, it can also be applied as a wireless microphone with a built-in transmission circuit.

  In the housing 12 of the karaoke microphone 11, as shown in FIG. 1B, a bidirectional microphone element 21 and a unidirectional middle microphone element 22 have directivity axes orthogonal to each other. The audio signals that are provided and collected by each are input to the audio signal processing means 23. The audio signal processing means 23 can employ, for example, a circuit configuration as described in FIG. 1 of Patent Document 1 described above, and the description thereof is omitted here. In this case, the audio signal L finally output in the circuit configuration of Patent Document 1 is the first audio signal L in FIG. 1 of the present invention, and the audio signal R is the second audio signal R in FIG. 1 of the present invention. is there.

  In addition to the audio signal processing means 23, an operator 24, a control means 25, and a mixing means 26 are incorporated in the housing 12 of the karaoke microphone 11. That is, the first audio signal L and the second audio signal R output from the audio signal processing means 23 are provided to the control means 25. The control means 25 will be described in detail with reference to FIG. 3 and FIG. 4 including the operation element 24 and the detailed circuit diagram and control operation. The localization according to the operation position of the body 15 is controlled. 3 and 4 to be described later show the control means 25 (operator 24) as an analog circuit, and FIG. 5 to be described later shows a digital configuration.

  The mixing means 26, as shown in detail in FIG. 3, mixes the first audio signal L and the second audio signal R in a localization controlled by the control means 25, and connects them as stereo signals from the connection cords 16 and 17. Output.

  Here, FIG. 2 shows a block diagram of a karaoke system in which the karaoke microphone of the present invention is used. In FIG. 2, a karaoke system 31 is externally connected to a karaoke main body 32 as a main device by wire or wirelessly. In addition to the karaoke microphone 11 of FIG. 1, a display unit 33 and a mixing amplifier 34 as display means. A speaker system 35 is provided, and a remote input / output terminal 36 is connected by wire or wirelessly. In addition, even if it is an element part which is not directly related to the summary of this invention about each said structure, in order to show that most can be applied also in the conventional karaoke system, the whole system is demonstrated.

  The display unit 33 displays a normal music selection display, a background image at the time of karaoke performance, and the like. For example, a liquid crystal display (LCD), a plasma display (PDP), and other various displays can be employed. The mixing amplifier 34 mixes and amplifies the audio signals L and R from the microphone 11 with the music performance data sent from the karaoke main body 32, and outputs them from the speaker system 35. The microphone 11 is connected by connection cords 16 and 17, but when the microphone 11 is a wireless system, a receiving unit is provided.

  The remote input / output terminal 36 transmits / receives data to / from the karaoke main body 32 using a wired system or a wireless system (IR system, Bluetooth (registered trademark) mechanism piconet connection system, etc.) by a terminal transmission / reception unit (not shown). Therefore, at least a song selection music registration means 37 is provided as appropriate. This music selection music registration means 37 is a program having a table for searching for music and selecting music, and the music selection is registered in a reservation queue (51) in the karaoke main body 32 to be described later.

  The karaoke main body 32 appropriately includes a bus 41, a central control unit 42, a ROM 43, a RAM 44, a storage unit 45, a video reproduction control unit 46 as a display control unit, a music performance control unit 47, and a transmission / reception unit 48. The RAM 44 has a storage area for the reservation queue 51, and the storage unit 45 stores a music DB 52 and a video DB 53.

  The central control unit 42 is a physical CPU that performs overall processing control of the system, and performs algorithm processing based on a program stored in the ROM 43. The RAM 44 serves as a work area for developing and executing the various programs in addition to forming a storage area for the reservation queue 51. The RAM 44 is composed of, for example, a semiconductor memory and is virtually a hard disk. It is a concept including the case where it is built on.

  The video reproduction control means 46 is a program or an electronic circuit that outputs the background video extracted from the video DB 53 to the display unit 33 during performance. The music performance control unit 47 is an electronic circuit that generates a musical sound based on the note data extracted from the music DB 52 using a music code, digitally outputs it, converts it into an analog signal, and outputs it to the mixing amplifier 34. The transmission / reception unit 48A is for exchanging data with the remote input / output terminal 36 using a wired system or a wireless system (such as an IR system or a Bluetooth (registered trademark) mechanism piconet connection system). Electronic circuit and program.

  The music DB 52 stored in the storage unit 45 stores note data and lyrics data for each music. Regarding performance, specifically, there is a music table in which a music ID, a music title, and an artist ID (artist name) are associated, and for each music, note data of a karaoke music in a predetermined data format managed by the music ID (for example, , MIDI (registered trademark) format note data) and other music data (files), each of which stores a music code as a file name.

  FIG. 3 is a circuit configuration diagram showing an example of the karaoke microphone of FIG. The circuit configuration in FIG. 3 is schematic and details are omitted. In FIG. 3, the control means 25 includes a first sound processing circuit 61 for the first sound signal L output from the sound signal processing means 23 and a second sound processing circuit 62 for the second sound signal R. The In the figure, since the circuit configuration of the control means 25 is related to the circuit configuration (variable resistor) of the operation element 24, the operation element 24 is also included.

  The first sound processing circuit 61 causes the control means 25 to input the first sound signal L to each non-inverting input terminal of the inverting amplification unit 63 and the inverting amplification unit 64, and the signal line of the first sound signal L This is a circuit configuration in which input is made to each inverting input terminal of the inverting amplification unit 63 and the inverting amplification unit 64 via a variable resistor of the operation element 24 connected in parallel. The output of the inverting amplifier 63 is input to one terminal of the adder 67 for L output of the mixing means 26 as the first audio signal L1 for L output, and the output of the inverting amplifier 64 is for R output. The first audio signal R1 is input to one terminal of the R output adder 68 of the mixing means 26.

  The second sound processing circuit 62 causes the control means 25 to input the second sound signal R to the non-inverting input terminals of the inverting amplifier 65 and the inverting amplifier 66, and the signal line of the second sound signal R. In this circuit configuration, the inverting amplifier 65 and the inverting amplifier 66 are input to the inverting input terminals via the variable resistors of the operation element 24 connected in parallel. The output of the inverting amplifier 65 is input to the other terminal of the adder 68 of the mixing means 26 as the second audio signal R2 for R output, and the output of the inverting amplifier 66 is the second audio for L output. The signal L2 is input to the other terminal of the adding unit 67 of the mixing unit 26.

  In the mixing unit 26, the adder 67 adds the first audio signal L 1 and the second audio signal L 2 and outputs the result as an audio signal L, so that the connection cord 16 supplies the first input terminal IN 1 of the mixing amplifier 34. Let them enter. In addition, the adder 68 adds the first audio signal R1 and the second audio signal R2 and outputs the result as an audio signal R, which is input from the connection cord 17 to the second input terminal IN2 of the mixing amplifier 34. is there.

  In the mixing amplifier 34, the audio signal L inputted to the first input terminal IN1 and the L music performance signal sent from the music performance control unit 47 are mixed and outputted to the speaker system 35 from the L output terminal LO. The audio signal R input to the second input terminal IN2 and the R music performance signal sent from the music performance control unit 47 are mixed and output to the speaker system 35 from the R output terminal RO. The sound is emitted from the speaker system 35.

  FIG. 4 is an explanatory diagram of localization control based on the relationship between the operation element in the control means and each audio signal output state. FIG. 4 shows an output state of the first audio signal and the second audio signal according to the position (referred to as the operation element position) when the movable body 15 of the operation element 24 in the karaoke microphone 11 is moved. is there.

  First, when the position of the movable body 15 (operator position) of the operation element 24 is at one end (leftmost end in FIG. 4) of the operation range, the first audio signal is localized to the left (L). And control to localize the second audio signal to the rightmost (R). That is, in the speaker system 35, sound is emitted in a state where only the first audio signal L is localized on the left side and only the second audio signal R is localized on the right side.

  Further, when the position of the movable body 15 (operator position) of the operation element 24 is in the approximate center of the operation range, both the first audio signal (C) and the second audio signal (C) are localized in the center. Control as much as possible. That is, at the center position of the speaker system 35, the sound is emitted in a localized state of the first sound signal C + the second sound signal C.

  When the position of the movable body 15 (operator position) of the operation element 24 is at the other end (the rightmost end in FIG. 4) of the operation range, the first audio signal is localized to the right (R). And control to localize the second audio signal to the leftmost (L). That is, in the speaker system 35, sound is emitted in a state where only the first audio signal R is localized on the right side and only the second audio signal L is localized on the left side.

  Since the movable body 15 of the operation element 24 is continuously movable, and the displacement of the operation element 24 is also continuous, the left side, the approximate center, and the right side also in the localization state of the first audio signal and the second audio signal. Is controlled continuously. The operation element 24 may be displaced in stages, for example, in three stages of the left end, the approximate center, and the right end, without being particularly continuous.

  Next, FIG. 5 shows a configuration block diagram of another example of the karaoke microphone according to the present invention. In FIG. 5, an audio signal processing means 23 and a mixing means 26 are the same as those shown in FIG. 1B as elements built in the housing 12 of the karaoke microphone 11, and a processor (DSP) for digitally processing the control means. The control means 72 and the operation element 71 include, for example, a potentiometer.

  That is, the operator 71 outputs the position signal of the movable body 15 to the control means 72, and the control means 72 controls the localization of the first sound signal and the second sound signal according to the position signal. . Note that the first audio signal L and the second audio signal R from the audio signal processing unit 23 are input to the control unit 72 via the A / D (analog / digital) converter 73 because the control unit 72 is a DSP. Then, the first audio signal and the second audio signal from the control unit 72 are input to the mixing unit 26 via the D / A converter 74, so that the first audio signal and the second audio signal shown in FIG. The localization can be controlled continuously or stepwise.

  In this way, by adopting a configuration in which the localization of the two audio signals is controlled by a single operator, the first audio signal and the first audio signal can be obtained by moving the movable body 15 from the microphone side with a single microphone during a duet singing. It is possible to freely change the localization of each singing position as two audio signals, and to improve the satisfaction by using a singing sound field according to the singer's preference.

  The karaoke microphone of the present invention can be used in microphone manufacturing industries and karaoke system manufacturing and use industries.

DESCRIPTION OF SYMBOLS 11 Microphone for karaoke 12 Microphone housing | casing 12A Mesh-like outer cover part 12B Gripping part 13 Switch 14 Slot 14A Operation scale 15 Movable body 21 Bidirectional side microphone element 22 Unidirectional middle microphone element 23 Audio signal processing means 24, 71 Manipulator 25, 72 Control means 26 Mixing means 31 Karaoke system 32 Karaoke main body 34 Mixing amplifier 35 Speaker system 47 Music performance control unit 61 First sound processing circuit 62 Second sound processing circuit 63-66 Inversion amplification unit 67, 68 Adder 73 A / D converter 74 D / A converter

Claims (2)

A microphone for karaoke that a singer uses to sing while playing karaoke music with a karaoke system,
Audio signal processing means comprising a plurality of microphone elements, and outputting audio signals collected from these microphone elements as a first audio signal and a second audio signal;
An operator having a movable body disposed on the housing;
Control means for controlling the localization of each of the first audio signal and the second audio signal in accordance with the position of the movable body of the operator;
Mixing means for mixing the first audio signal and the second audio signal at a position controlled by the control means and outputting as a stereo signal;
A microphone for karaoke, comprising: A microphone for karaoke according to claim 1,
The control means includes
When the movable body position of the operating element is at one end of the operating range, the first audio signal is localized to the left and the second audio signal is localized to the right.
When the movable body position of the operating element is in the approximate center of the operation range, control is performed to localize both the first audio signal and the second audio signal in the center,
Control is performed so that the first audio signal is localized to the right and the second audio signal is localized to the left when the movable body position of the operation element is at the other end of the operation range. Karaoke microphone.

Images