JP5146882B2 - Guitar sound generator and sound generator recording device - Google Patents

Description

  In order to reproduce and listen to the sound of a guitar as an acoustically good tone, the present invention attaches a small cone speaker to a position on the inner side of the back plate which is substantially in front of the opening in the body of the guitar, while a small drive unit is mounted. The present invention relates to a sound source reproduction device characterized by being fixed to the back of a piece inside a front plate opening and inputting and reproducing a stereo signal of the sound source reproduction device to these sounding bodies. Furthermore, the sound source signal is recorded with a signal collected by a condenser microphone with a tapered resonance tube array with an opening that resonates at a frequency component that is almost an integral multiple, and a direct sound collected by another microphone. The present invention relates to a sound recording apparatus characterized in that the recorded signal is recorded on a two-channel recorder.

  In general, as shown in FIG. 1, a guitar has a guitar body 1 to which a top plate 1 a is bonded and an inner part of the guitar body 1, and a groove for connecting a neck 3 described later. A wood block 2 provided; a neck 3 in which an insertion portion 3a of a heel 3b is inserted and connected to a groove 2a of the block 2; and a finger plate 4 bonded to the upper surface of the neck; A bridge (piece) 5 installed on the upper surface of the front plate 1a of the guitar body 1, a brace bar 6 bonded to the lower surface of the front plate 1a, a head 7 provided at the tip of the neck 3, A guitar string 8 connected between the bridge 5 and the head 7 and a fingerboard adjusting iron core 9 which is installed in the longitudinal direction at the upper center of the neck 3 and adjusts the planar state of the fingerboard 4 are included. . In the guitar configured as described above, the performance sound is sustained for a long time when the front plate 1a reverberates during performance, and further, the guitar body radiates from the opening 10 after being resonated with the cavity of the guitar to generate a specific guitar sound.

  There is an attempt to reproduce the tone of a guitar by forming an enclosure with a body of a classic guitar, incorporating a speaker unit in the enclosure, and utilizing cavity resonance of the body (Patent Document 1).

  There has been proposed a guitar in which a vibrator is attached to the back of a guitar bridge and an additional sound is played through the vibrator (Patent Document 2). This is to pick up the sound with a pickup attached to the guitar, feed it back through the processor, and amplify the reverberation effect of the instrument. As it is possible to electronically change the sound emitted by the instrument itself Yes.

  [1] JP 2002-247676 A [2] Patent Publication 2002-539479

Here, the frequency band of the sound wave is assumed to be 500 Hz or less as a low frequency, 500 Hz to 2 kHz as a middle frequency, and 2 kHz to 8 kHz as a high frequency. When harmonic components or high-frequency sounds contained in sound waves are radiated into the air from sound sources such as sound sources or speakers, they are propagated while being reflected by reflectors and walls in the sound field space, and are absorbed and attenuated. Reach the ear. Therefore, in practice, a sound with less harmonics than the sound quality in the vicinity of the sound source or sounding body is heard. In particular, the impact sound and the noise component at the time of pronunciation are weakened, and the rise of the sound and the transient sound are difficult to be transmitted. As a result, you will hear a sound with an unclear sense of sound and a lack of spaciousness. Here, it becomes a problem to improve such problems in the sound field where sounds and music are heard. Even in the performance of a piano with the widest range, it is difficult for the listener to transmit high-frequency sounds. In general, not only the piano, but the sound of musical instruments contains a lot of harmonic components, which is almost an integer multiple of the fundamental frequency component. As it decays quickly, it is difficult to reach the listener.
An object of the present invention is how to faithfully reproduce a sound having such characteristics as a sound source when the sound is first collected and recorded as an acoustically good timbre, and reproduced and heard. Moreover, the question is how exactly the characteristics of temporal variation can be grasped. For this purpose, the following two problems to be solved are set.
(1) In order to reproduce and listen to the sound of a guitar as a good acoustic sound, a small cone speaker is attached to the inside of the back plate, which is almost in front of the opening in the body of the guitar, while a small drive unit is displayed. The present invention relates to a sound source reproduction device characterized by being fixed to the back of a piece inside a plate opening and inputting and reproducing a stereo signal of the sound source reproduction device to these sounding bodies.
(2) The sound source signal is recorded with a signal collected by a condenser microphone equipped with a tapered resonance tube array with an opening that resonates at an almost integral multiple of the frequency component and a direct sound with another microphone. The present invention relates to a sound recording apparatus that records a collected signal on a two-channel recorder.
By showing solutions to these problems, it is possible to modelly show the process in which sound waves generated by guitar playing propagate through the air, reach the ears, and are captured and enjoyed by the auditory sense.

As a means for solving the problem, the present invention provides a small cone in a position on the inner side of the back plate that is almost in front of the opening in the body of the guitar in order to reproduce and listen to the sound of the guitar as an acoustically good tone. A sound source reproduction apparatus characterized by attaching a speaker and fixing a small drive unit to the back of a piece inside a front plate opening and inputting a stereo signal of the sound source reproduction apparatus to these sound generators for reproduction. It is. Furthermore, the sound source signal is recorded with a signal collected by a condenser microphone with a tapered resonance tube array with an opening that resonates at a frequency component that is almost an integral multiple, and a direct sound collected by another microphone. A sound receiving system using a guitar is provided, which relates to a sound recording device characterized by recording a recorded signal on a two-channel recorder.
Fig. 1a shows an example of a sound collector. The sound collector is formed in a cap shape, and is attached to, for example, a small condenser microphone (not shown) as a microphone cap. The sound pickup device is composed of a tapered resonance tube array 53 having an opening 52 that resonates with a frequency component that is approximately an integral multiple. The resonance tubes constituting the array are connected to the resonance tube of the same shape with a straight line having a center of about 180 degrees, and are connected to the microphone end face by the cap portion 51. The length of the resonance tube is L / 2, the shortest is L / 2, and the space is divided into 6 to 12 and arranged radially around the entire circumference of the cap to form a resonance tube array.

  In order to reproduce and listen to the sound of a guitar as an acoustically good tone, the present invention attaches a small cone speaker to a position on the inner side of the back plate which is substantially in front of the opening in the body of the guitar, while a small drive unit is mounted. The present invention relates to a sound source reproduction device characterized by being fixed to the back of a piece inside a front plate opening and inputting and reproducing a stereo signal of the sound source reproduction device to these sounding bodies. The sound emitted from the corn speaker provides a mid-low sound effect that takes into account the characteristics of the guitar due to the cavity resonance effect of the trunk. In addition, the drive unit drives the area around the top plate to obtain a sound effect rich in higher harmonics. Therefore, when the reproduction is performed according to the method of the present invention, reproduction can be performed with richer timbres and sounds. Moreover, the acoustic characteristics of your guitar are taken into account. Furthermore, the sound source signal is recorded in the R channel with the signal collected by the condenser microphone equipped with a tapered resonance tube array with an opening that resonates at almost an integral multiple of the frequency component, and the direct sound is sent to another microphone. According to the sound recording device characterized by recording the signal collected in the L channel into the L channel, if the R channel is reproduced by a drive unit and the L channel is reproduced by a cone speaker, a richer sound effect can be obtained. .

  In order to reproduce and listen to the sound of a guitar as an acoustically good tone, the present invention attaches a small cone speaker to a position on the inner side of the back plate which is substantially in front of the opening in the body of the guitar, while a small drive unit is mounted. The present invention relates to a sound source reproduction device characterized by being fixed to the back of a piece inside a front plate opening and inputting and reproducing a stereo signal of the sound source reproduction device to these sounding bodies. Furthermore, the sound source signal is recorded with a signal collected by a condenser microphone with a tapered resonance tube array with an opening that resonates at a frequency component that is almost an integral multiple, and a direct sound collected by another microphone. A sound receiving system for a guitar is provided, which relates to a sound recording device characterized in that the recorded signal is recorded in a two-channel recorder. A sound collector used for recording a sound source of a guitar performance is formed in a cap shape, and is attached to a small condenser microphone as a microphone cap, for example. The sound pickup device is composed of a tapered resonance tube array having an opening that resonates with a frequency component that is approximately an integral multiple. The resonance tubes constituting the array are linear with a center of approximately 180 degrees and are connected to the resonance tubes of the same length, and are connected to the microphone end face at the cap portion. The length of the resonance tube is L / 2, and the shortest is L / 2. The resonance tube is divided into 12 portions and arranged radially around the entire cap to form a resonance tube array.

  When you want to enjoy karaoke with a guitar accompaniment, instead of singing while playing the accompaniment part yourself, the guitar sound is played as an acoustically good tone and you can sing along with it. Attach a small cone speaker to the inside of the back plate that hits the front of the unit, and attach a small drive unit to the back of the piece inside the front plate opening, and input the stereo signal of the sound source playback device to these sound generators The present invention relates to a sound source playback device (guitar SP) characterized by being played back. Furthermore, the sound source signal is recorded with a signal collected by a condenser microphone with a tapered resonance tube array with an opening that resonates at a frequency component that is almost an integral multiple, and a direct sound collected by another microphone. According to a sound recording device characterized in that the recorded signal is recorded in a two-channel recorder, a better timbre can be obtained. However, a sound source recorded under good conditions can be fully enjoyed without relying on the recording device. If you have an orchestra accompaniment, you can enjoy karaoke by playing guitar.

  When you want to learn how to play a guitar with the CD tutor system, you can play the model or accompaniment part as an acoustically good sound and play along with it. For playback, a small cone speaker is attached to the inside of the back plate, which is almost in front of the opening in the guitar body, while a small drive unit is fixed to the back of the piece inside the front plate opening. The sound source reproduction apparatus (guitar SP) is characterized in that the stereo signal of the sound source reproduction apparatus is input to the apparatus and reproduced. In addition, the sound source signal of the educational material is recorded with a signal collected by a condenser microphone with a tapered resonance tube array with an opening that resonates at an almost integral multiple of the frequency component, and a direct sound with another microphone. According to the sound recording device characterized by recording the collected signal in the two-channel recorder, a better timbre is obtained. Audio guidance can also be recorded and played back. If you have a guitar ensemble or orchestra accompaniment for advanced users, you can enjoy playing the guitar.

  When you want to play a guitar performance and enjoy it, you can play the guitar sound as an acoustically good tone on your guitar and listen to it. A sound source characterized by mounting a small cone speaker on the other hand, and fixing a small drive unit to the back of the piece inside the front plate opening, and inputting the stereo signal of the sound source playback device to these sound generators for playback According to the playback device (guitar SP). Furthermore, the sound source signal is recorded with a signal collected by a condenser microphone with a tapered resonance tube array with an opening that resonates at a frequency component that is almost an integral multiple, and a direct sound collected by another microphone. A better sound quality can be enjoyed by a sound recording device characterized by recording the recorded signal on a two-channel recorder.

Application to listening to music with a guitar at home is possible. In ordinary homes, it is customary to listen with a conventional speaker system or with headphones or earphones. The sound field support method has been proposed mainly as a method of controlling by adding reverberation, but it has not been established as a method to enrich the tone of the sound source, and the spread of equipment due to acoustic discomfort has not been established. Not shown. According to this patent, good music can be enjoyed by the effect of a simple sound collector.
When you want to enjoy karaoke with guitar accompaniment, you can apply it to the case where you play the accompaniment part by playing it as an acoustically good tone instead of singing while playing the accompaniment part yourself.
When you want to learn the guitar with the CD tutor system, when you play the accompaniment part, you can play the guitar sound as an acoustically good tone and play along with it.
When you want to play and enjoy the guitar performance, you can apply it to the case where you play and listen to the guitar sound as an acoustically good tone on your own guitar.

Cross-sectional view of a guitar with a cone speaker and a drive unit attached. [FIG. 1a] An example of sound collector; front view and plan view Guitar karaoke system configuration diagram of Embodiment 1 Guitar tutor system configuration diagram of Embodiment 2 Guitar performance appreciation system configuration diagram of Example 3

Explanation of symbols

1 Guitar body 1a Front plate 2 Block 3 Neck 3a Insertion part 3b Heel
4 Fingerboard 5 Bridge (piece)
6 Brace bar 7 Head 8 Guitar string 9 Fingerboard adjustment iron core 10 Trunk opening 11 Cone speaker 12 Driver unit 13 Hole 14 Lead wire 51 Cap part 52 Opening part 53 Tapered tube array

Claims (1)

Attach a small cone speaker to the inside of the back plate, which is almost in front of the opening in the body of the guitar, and attach a small drive unit to the back of the piece on the inside of the front plate opening to reproduce sound sources on these sound generators. In a guitar sound source playback device that inputs a stereo signal of the device, the sound source signal is collected by a condenser microphone equipped with a tapered resonance tube array having an opening that resonates with a frequency component that is approximately an integral multiple of the fundamental tone. A guitar sound recording / reproducing apparatus, which records a sound signal and a signal obtained by collecting direct sound with another microphone on a two-channel recorder.

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