CN205726356U - Digital audio processing system for stringed musical instrument - Google Patents
Digital audio processing system for stringed musical instrument Download PDFInfo
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- CN205726356U CN205726356U CN201620407635.8U CN201620407635U CN205726356U CN 205726356 U CN205726356 U CN 205726356U CN 201620407635 U CN201620407635 U CN 201620407635U CN 205726356 U CN205726356 U CN 205726356U
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Abstract
This utility model is for the digital audio processing system of stringed musical instrument, include power circuit and signal processor, this signal processor is provided with audio input end and audio output, described signal processor includes audio digital signal processor DSP, central processing unit CPU and preamplifier, described audio digital signal processor DSP receives after the simulated audio signal of sound played by the stringed musical instrument that audio input end picks up and is converted into digital signal, go back to the most again deliver to preamplifier for simulated audio signal, sound is played by what audio output was output as stringed musical instrument after signal amplifies；Described central processing unit CPU is for storing the frequency response curve combination of all kinds style, audio digital signal processor DSP converts a signal into analogue signal by audio digital signal processor DSP after several inputs being combined, preamplifier amplify output volume.This utility model has preferably control and tone color adjusts, and motility is higher, and former sound reduction effect is more preferable.
Description
Technical field
This utility model relates to the electroacoustic of a kind of primary sound stringed musical instrument and amplifies and the frequency response equalization application system of primary sound stringed musical instrument.
Background technology
The forties in 20th century, people created " electric guitar ".Purpose is to allow guitar performance cover more audiences, exceedes the scope that the volume of acoustic guitar can cover.
The band favored by people at that time is typically made up of airduct musical instrument and drum, because the primary sound of these musical instruments (amplifying without electroacoustic) is the loudest, more people can be allowed to hear in the occasion of such as dancing party etc.
Electroacoustic amplified also in the starting stage at that time.It is referred to as " big band epoch " this period.
The body (or resonator) of acoustic guitar is used for amplifying the vibration of string, does not has electroacoustic to amplify.But, the sound pressure level that guitar resonator produces comes insignificant compared with airduct musical instrument.
Electric guitar sounds and is not as acoustic guitar.
20 century 70s, due to the progress of electronic technology, acoustic guitar pickup system and pre-amplifier system occur in that.Its objective is, while keeping " traditional acoustic guitar " tone color, to amplify the performance volume of acoustic guitar so that it is larger range of audience can be covered, because the tone color of the tone color of tradition acoustic guitar and electric guitar or title " solid " guitar is as different as light from darkness.
Major technique defect is: owing to the body of guitar is a resonator, when guitar volume is exaggerated, sound after amplification makes cavity vibrate, the simultaneously sensor in guitar " pickup " again being amplified the most again, then reproduced again by amplifier system, form a loop, or claim " feedback " (performance personnel are normally referred to as " uttering long and high-pitched sounds ").This loop generally sounds like a kind of lasting buzz, even " screams ".This buzz is to be produced by guitar qin body " resonant frequency ".More than one main frequency wherein may be had easily to produce feedback, and this feedback is the major obstacle successfully amplified primary sound stringed musical instrument.
Since the 1970's, the most frequently used sensing technology is to press a set of piezoquartz under guitar Os Equi, has been used for amplifying.Os Equi is the terminal of string at guitar body, and the position of Os Equi determines the length of guitar string, or claims " effectual chord length ".Owing to being positioned at the end of string, it seem can suitable or effective pickup string vibration because string is exactly the resonator shaking guitar from here.Piezoquartz is used and is because compared with mike, and the produced feedback of piezoquartz wants much less, and piezoquartz is the most relatively inexpensive.But, guitar or the sound of any " primary sound stringed musical instrument ", imply that musical instrument is via the sound after the original amplification of resonator, as a example by violin or violoncello, different positions or plate face from musical instrument, thus a lot of people thinks that the sound of the piezoeletric quartz sensor (hereinafter referred to as piezoquartz or sensor) only picking up the string sound at Os Equi is untrue or tonequality is not good enough, the not faithful reappearance (reproduction of the most former tonequality) to instrument tamber.
Have the amplifier system of multiple sensor combinations recently, export after the input of more than one sensor is mixed；Then being amplified, it is therefore an objective to form one the most real primary sound stringed musical instrument tone color, the tone color of stringed musical instrument to be contrasted is the truest or accurate, more typically to liking the performance of record in sound recording studio.
The environment of recording studio aims at recording effect optimization and designs, and generally includes:
1, all kinds of high-quality expensive mikes；
2, sound console, accessible multiple mikes or other input or sound source, be mixed into the output of same electroacoustic；
3, the equipment being used for modifying sound is commonly called " effect device ": particularly tone balanced unit, can be used to modify or improve the output of mike, to improve recording quality.Described tone balanced unit, also referred to as " graphic equalization ", " parametrization equilibrium " unit.They are advanced tone regulation and control unit.Graphic equalizer used by recording studio generally comprises 31 tone decay devices, to modify 31 frequency ranges.
The technology of above-mentioned recording studio allows sound(-control) engineer that texture and the tone of sound are had sizable control leeway.When recording the stringed musical instrument comprising acoustic guitar, generally use the high-quality mike of two or more costlinesses, through equilibrium or frequency response correction, be mixed into an output, obtain " play and reproduce " being suitable for record and resetting.Owing to the cost of a mike is up to several thousand dollars, and tone control or the sound equalization unit same price are high, and total system engineering takes up room greatly, and the sound quality that primary sound stringed musical instrument is played live cannot be equal to " recording studio performance ".It is also noteworthy that there is no multitude of spectators in recording studio, there is no the necessity significantly amplified.
Knowable to the electroacoustic amplifying technique of above-mentioned acoustic instrument develops produced impact, its technological improvement is relative complex, and, also can affect its electroacoustic amplification effect due to following factor.
1, acoustic guitar is of a great variety, and quality is uneven.
2, the type of music is the abundantest, and these types include but not limited to: western villages, popular, rock and roll, folk rhyme, Blues, jazz, put gram, Latin America, thrum style, allusion, Fu Lamenge；
3, different acoustic guitars often is produced out to adapt to a certain certain types of music.Rural area and western style, jewellery (Jumbo, note: a kind of lyrate of build more chubbiness), allusion and Fu Lamenge guitar are certain some example therein；
4, ground, the performance of music also branch and environment.In such as bar, nightclub, auditorium, family, party, outdoor red-letter day and other rallies etc.；
5, music is played out by various public broadcastings (PA) system (a series of electroacoustic amplifiers and speaker), by little " amplifying " power amplifier and sound system, is amplified simultaneously also by " special string music amplifier ".This special primary sound string music amplifier includes signal input, amplifier and speaker, in order to adapt to the amplification of primary sound stringed musical instrument volume, the performance adapting to little scope spectators for other, the design of this special string music amplifier is to make up existing sound amplification function and sound system；
6, singer or composer would generally play the music of various style by the mode of oneself: to show oneself " artistry " or " original ".
Utility model content
The purpose of this utility model is, the frequency response of electroacoustic amplification and primary sound stringed musical instrument in order to solve existing primary sound stringed musical instrument exists above-mentioned technical problem, it is provided that a kind of digital audio processing system for stringed musical instrument.
Digital audio processing system for stringed musical instrument, include power circuit and signal processor, this signal processor is provided with audio input end and audio output, and described signal processor includes audio digital signal processor DSP, central processing unit CPU and preamplifier.Described audio digital signal processor DSP receives after the simulated audio signal of sound played by the stringed musical instrument that audio input end picks up and is converted into digital signal, go back to the most again deliver to preamplifier for simulated audio signal, after signal amplifies, played sound by what audio output was output as stringed musical instrument；Described central processing unit CPU is for storing the frequency response curve combination of all kinds style, central processing unit CPU has storage program, startup system, the download function of management program, audio digital signal processor DSP converts a signal into analogue signal by audio digital signal processor DSP after several inputs being combined, preamplifier amplify output volume.
The purpose of this utility model can also be realized by below scheme:
Further, described audio input end is provided with one or more；Described audio output is single output port.
Further, described audio digital signal processor DSP is provided with a connection external computer and uses the frequency response curve that each frequency range is edited in corresponding software operation and the creation access interface mutually equalized thereof, and a program write port.While playing stringed musical instrument, by described creation access interface, frequency response curve combination is carried out real time modifying or editor, the frequency response curve combination formulated out is stored in CPU as program by program write port after process writes code, calls for user is on-demand.
Further, described audio input end be piezoelectric transducer, mike or/and the input of one or more sensors of magnetic cartridge etc., described piezoelectric transducer, mike is or/and the audio signal of magnetic cartridge pickup is sent to audio digital signal processor DSP by audio input end.
Further, the output port of described audio output is connected to power amplifier and microphone.
Further, described signal processor connects a controller, this controller includes three sections or two sections of EQ regulating keys of industry standard, for regulating the volume of high, medium and low frequency, having program switching push button, for selecting DSP to be loaded into carry out the program that processes and total volume control button for controlling the output volume of preamplifier in CPU, three sections or the volume control of two-stage nitration EQ regulating key, this controller uses analog form or digital form output to be external to amplifier, receive power amplifier again, then receive speaker.
Further, described power circuit connects a storage battery, storage battery be powered.
The beneficial effects of the utility model:
1, the performance primary sound of stringed musical instrument is processed by this utility model by audio digital signal processor DSP, the analogue signal of the stringed musical instrument performance primary sound of induction apparatus/sound pick up equipment pickup is converted to digital signal process, go back to again after process deliver to preamplifier for simulated audio signal, exported by audio output after signal amplifies.Use the software on external computer to carry out real-time edition and modification to playing tone color by creation access interface, and the frequency response of good results after editor is combined after writing code, program write port be stored in CPU, call for user is on-demand.During use, button switches to the program needed, and program is downloaded to DSP process in CPU, is then amplified by preamplifier.Having and preferably control and tone color adjustment, motility is higher, and former sound reduction effect is more preferable.
2, audio digital signal processor DSP of the present utility model and central processing unit CPU are divided into two pieces of circuit chips, are thus effectively reduced power consumption of the present utility model, improve the enduring quality that storage battery uses, and in order to go out, performance provides more preferable condition.
3, signal processor of the present utility model also has frequency response curve combination and the edition function storing all kinds style, and practicality is higher.
4, signal processor of the present utility model includes audio digital signal processor DSP and central processing unit CPU combines, and it is simultaneously provided with controller and preamplifier, thus can effectively optimize overall structure of the present utility model, effectively reduce the overall volume of audio frequency conversion outut device, and be greatly reduced production cost.
5, the various sensor of this utility model is mixed into a single circuit output, audio input end or different types of sensor are placed on the fixed position of guitar inside or around, comparing recording studio inner height and rely on the playback environ-ment being difficult to replicate of mike elaborate position, this is great advantage.Thereby, it is possible to more easily each sensor is implemented trickle high-quality tone or the amendment of sound frequency or " equilibrium ", simple in construction, easily operating, serviceability is more preferable.
6, audio input end of the present utility model be piezoelectric transducer, mike or/and the input of one or more sensors of magnetic cartridge, described piezoelectric transducer, mike is or/and the audio signal of magnetic cartridge pickup is sent to audio digital signal processor DSP by audio input end input.User can to the quantity of each sensor or audio amplitude, and the tone color of each sensor and sound frequency equilibrium carry out slight modulation.To this end, this utility model can better adapt to environmental change and the needs of electroacoustic amplification, and the more preferable complicated tone color requirement that must meet the style of guitar, the playing style of artist/client and primary sound stringed musical instrument.
7, this utility model allows client to have multiple Mixed design, such as: the most from two kinds to six kinds.Modified parameter by creating access interface by the software on external computer, available more " soundscape ", thus can make the taste of more multiple coincidence user and the tone color of requirement.And also unlimited interactive motility can be provided with user, singer or composer or client, it is achieved the debugging of more COMPLEX MIXED audio frequency or selection can be client or are customized together with client, have potential user's interactive performance.Further, this utility model can be also the selection that client provides more high-quality or personalization, i.e. client can buy " mixed audio ", attach it in its system, only need online reprogramming, or buy " electronic cards ", electronic cards can easily insert in this utility model system, can download to more adapt to the soundscape of their playing style, equipment or musical instrument.
8, this utility model not only can provide high-quality concrete Balance route, additionally it is possible to reduces the impact (reducing bothersome frequency) of feedback, thus substantially increases effect when using mike.In other words, if the control of height can not be carried out when this utility model avoids prior art because of use mike, easily cause feedback, affect acoustical quality, cause product to rely primarily on the situation that the piezoelectric inductor at bridge is originated as pickup.When piezoelectric inductor is the induction apparatus uniquely used, tonequality can be made to become inferior, more precisely, the piezoquartz below Os Equi can not accurately reproduce the complicated tone color of acoustic guitar when being used alone.
9, signal processor of the present utility model connects a controller, and this controller includes three sections or two ends EQ of industry internal standard, for regulating the volume of high, medium and low frequency；Program switching/selection key and volume control key.The outfan of controller is connected to amplifier, is subsequently connected to power amplifier, then receives speaker.User can switch multi-frequency response curve combinator or more " soundscape " by the needs of oneself and taste, simple to operate, convenient.
Accompanying drawing explanation
Fig. 1 is functional-block diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
With reference to the digital audio processing system for stringed musical instrument shown in Fig. 1, include power circuit 1 and signal processor, this signal processor is provided with audio input end 2 and audio output 3, described signal processor includes audio digital signal processor DSP4, central processing unit CPU 5 and preamplifier 6, described audio digital signal processor DSP4 receive audio input end 2 pickup to stringed musical instrument play the simulated audio signal of sound after be converted into digital signal, go back to the most again deliver to preamplifier 6 for simulated audio signal, sound is played by what audio output 3 was output as stringed musical instrument after signal amplifies；Described central processing unit CPU 5 is for storing the frequency response curve combination of all kinds style, central processing unit CPU 5 has storage program, startup system, the download function of management program, audio digital signal processor DSP4 converts a signal into analogue signal by audio digital signal processor DSP4 after several inputs being combined, preamplifier 6 amplify output volume.
In embodiment, described audio input end 2 is provided with one or more；Described audio output 3 is single output port.Described audio digital signal processor DSP4 and central processing unit CPU 5 are divided into two pieces of circuit chips, its function allocation is different, particularly as follows: described audio digital signal processor DSP4 and central processing unit CPU 5 be respective separate connection on power circuit 1, i.e. audio digital signal processor DSP4 and central processing unit CPU 5 use and are connected in parallel on power circuit 1.
By described creation access interface 41, frequency response curve combination is carried out real time modifying or editor, be stored in CPU after the program formulated out, call for user is on-demand.Described audio digital signal processor DSP4 is provided with a connection external computer and uses software to operate the creation access interface 41 programmed.This creation interface enter end 41 can be accessed by computer use software kit work out as required induction coils input hybrid frequency response curve composite type, initiative meets the taste of user and the tone color of requirement, unlimited motility is provided for user, singer or composer or client, realize debugging or the selection of more COMPLEX MIXED tone color frequency curve composite type, can be client or be customized together with client that there is potential user's interactive performance.
It is provided with a program write port 51 at central processing unit CPU 5, by described program write port 51, DSP4 is being stored to central processing unit CPU 5 with the form of program by the frequency response curve combination of all kinds style of the software initiative on external computer after writing code.Further, described central processing unit CPU 5 has storage, startup system and the function of management download program.When calling required program by program switching push button, tone color program is i.e. loaded onto audio digital signal processor DSP4 process from CPU CPU5, then being exported by preamplifier 6, through amplifier and speaker, be output as musical instrument plays sound in real time.
During application, program is that the program initiative external computer of access interface 41 on audio digital signal processor DSP4 is edited by corresponding software, is written as code, is stored in central processing unit CPU 5 through program write port 51 after editor.By program switching push button 312, from CPU CPU5, call the program of needs, download to audio digital signal processor DSP4 processes, then export from preamplifier 6, it is connected to power amplifier, is connected to microphone 7 (speaker) place.Described central processing unit CPU 5 play when, when with program switching push button 312 caller in addition to, all in resting state.User is playing when, program switching push button 312 is utilized to be switched to the tone color oneself liked, the program (being exactly the code write) of this tone color will download to audio digital signal processor DSP4 from the central processing unit CPU 5 of storage, this tone color program is processed by audio digital signal processor DSP4 again, and allowing the performance tone color of user eject is the effect of this frequency response curve that he selects.
Described audio input end 2 be piezoelectric transducer, mike or/and the input of one or more sensors of magnetic cartridge, these one or more sensors are fixed on guitar inside or around.Described piezoelectric transducer, mike is or/and the simulated audio signal of magnetic cartridge is sent to audio digital signal processor DSP4 by audio input end 2 input.During use, the mixing of multiple identical or different sensor can be used, i.e. combine the tuning amplitude of one or more various sensors and the tone color of each sensor and sound frequency equilibrium, make it better adapt to environmental change and the needs of electroacoustic amplification, and adapt to the complicated tone color requirement of the style of various guitar, the playing style of artist/user and primary sound stringed musical instrument.Select kind and the quantity mixing of sensor, as selected multiple piezoelectric transducer, multiple mike or/and the sensor of a magnetic cartridge mixes, the most each sensor can realize trickle high-quality tone or the amendment of sound frequency or " equilibrium ", it is consequently formed multiple or/and by single circuit output after forming the tone color style that user likes after multiple sensors mixing, the output port of described audio output 3 is connected to power amplifier and microphone.Described frequency response curve combination (program) selecting to mix multiple sensor/sound pick up equipments is as tone color program, this tone color program is user uses when, plug sound system to play, select tone color program that the tone color played in real time is processed simultaneously, propagated from by sound system.
Described signal processor connects a controller 31, and the outfan of this controller 31 is connected to microphone, for controlling to export total volume and the audio types proportion of audio frequency, and switching tone color program.Controller 31 includes volume fine setting key 311 and total volume control button 313 of high, medium and low frequency, and tone color program switch key 312.Concrete described controller 31 includes three sections of industry standard or two-stage nitration EQ regulating key 311 for regulating and controlling high, medium and low frequency respective volume proportion, there is program switching push button 312 for selecting DSP to be loaded into carry out the program processed in CPU, and always volume control button 313 is used for controlling the output volume of preamplifier 6, three sections or the volume control of two-stage nitration EQ regulating key 311, this controller 31 uses analog form or digital form output to be external to amplifier, receive power amplifier again, then receive speaker.During use, select/switch tone color program by selection key 312, i.e. by button or switch, the program of audio digital signal processor DSP4 to be loaded into is selected in central processing unit CPU 5, to carry out " tone color process ", the style allowing client or singer or composer like according to oneself selects different hybrid sensor frequency response combinations, plays out the distinctive acoustic guitar tone color of tool.
Described preamplifier 6 signal incoming end is connected to audio digital signal processor DSP4 signal output part, and preamplifier 6 signal output part is connected to described one or more microphones.Described power circuit 1 connects a storage battery 7, storage battery 7 be powered, and the power supply of the digital audio processing system for stringed musical instrument the most of the present utility model is powered by 9 volts of square batteries or the similar battery of industry standard.
The foregoing is only preferred embodiment of the present utility model; not this utility model is made any pro forma restriction; any those skilled in the art; in the range of without departing from technical solutions of the utility model; the structure and the technology contents that utilize the disclosure above are made the equivalent of the changes such as variation, amendment and are implemented, and belong to protection domain of the present utility model.
Claims (7)
1., for the digital audio processing system of stringed musical instrument, include power circuit (1) and signal processor, this letter
Number processor is provided with audio input end (2) and audio output (3), it is characterized in that: at described signal
Reason device includes audio digital signal processor DSP (4), central processing unit CPU (5) and preamplifier
(6),
Described audio digital signal processor DSP (4) receives audio input end (2) and picks up the string music arrived
Device is converted into digital signal after playing the simulated audio signal of sound, goes back to send for simulated audio signal the most again
To preamplifier (6), after signal amplifies, played sound by what audio output (3) was output as stringed musical instrument；
Described central processing unit CPU (5) combines for the frequency response curve storing all kinds style,
Central processing unit CPU (5) has storage program, startup system, the download function of management program, audio frequency
Digital signal processor DSP (4) passes through audio digital signal processor DSP (4) after several inputs being combined
Convert a signal into analogue signal, preamplifier (6) amplify output volume.
Digital audio processing system for stringed musical instrument the most according to claim 1, is characterized in that: described
Audio input end (2) is provided with one or more；Described audio output (3) is single output port.
Digital audio processing system for stringed musical instrument the most according to claim 1, is characterized in that: described
Audio digital signal processor DSP (4) is provided with a connection external computer, operates the wound programmed with software
Make access interface (41) and program write port (51), by described creation access interface (41)
Frequency response curve combination is carried out real time modifying or editor, and the frequency response curve combination formulated out is through compiling
It is stored in central processing unit CPU (5) as program by program write port (51) after writing code,
Call for user is on-demand.
Digital audio processing system for stringed musical instrument the most according to claim 1, is characterized in that: described
Audio input end (2) is that piezoelectric transducer, mike are or/and one or more sensors of magnetic cartridge
Input, described piezoelectric transducer, mike is or/and the audio signal of magnetic cartridge pickup passes through audio frequency
Input (2) is sent to audio digital signal processor DSP (4).
Digital audio processing system for stringed musical instrument the most according to claim 1, is characterized in that: described
The output port of audio output (3) is connected to power amplifier and microphone.
Digital audio processing system for stringed musical instrument the most according to claim 1, is characterized in that: described letter
Number processor connects three sections or the two-stage nitration having a controller (31), this controller (31) to include industry standard
EQ regulating key (311) is used for regulating and controlling high, medium and low frequency respective volume proportion, has program switching push button (312)
For selecting DSP to be loaded into carry out the program processed, and total volume control button (313) in CPU
For controlling the output volume of preamplifier (6), three sections or the volume of two-stage nitration EQ regulating key (311)
Controlling, this controller (31) uses analog form or digital form output to be external to amplifier, then receives power
Amplifier, then receive speaker.
Digital audio processing system for stringed musical instrument the most according to claim 1, is characterized in that: described
Power circuit (1) connects a storage battery (7), storage battery (7) be powered.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744443A (en) * | 2016-05-05 | 2016-07-06 | 广州博创乐器有限公司 | Digital audio processing method for string instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105744443A (en) * | 2016-05-05 | 2016-07-06 | 广州博创乐器有限公司 | Digital audio processing method for string instrument |
| CN105744443B (en) * | 2016-05-05 | 2019-07-09 | 广州博创乐器有限公司 | Digital audio processing system for stringed musical instrument |
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