CN1275496C - Automatic loudspeaker frequency response equating regulation system and method - Google Patents
Automatic loudspeaker frequency response equating regulation system and method Download PDFInfo
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- CN1275496C CN1275496C CN 01116194 CN01116194A CN1275496C CN 1275496 C CN1275496 C CN 1275496C CN 01116194 CN01116194 CN 01116194 CN 01116194 A CN01116194 A CN 01116194A CN 1275496 C CN1275496 C CN 1275496C
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Abstract
The present invention discloses a system and a method for automatically equalizing and regulating a frequency response for a loudspeaker. The system comprises a loudspeaker, a central processing unit, a sound effect control circuit, a digital equalizer and a microphone, wherein the central processing unit generates a standard sound source signal through the sound effect control circuit, and thus, after receiving the standard sound source signal, the digital equalizer can output the standard sound source signal through the loudspeaker; after the loudspeaker receives the standard sound source signal, the standard sound source signal is transmitted back to the central processing unit through the sound effect control circuit; the frequency response of the received sound signal and the frequency response of the set ideal frequency response data are compared, and a group of equalization regulating yield values are worked out and stored in the digital equalizer; thus, the frequency response of the loudspeaker is automatically regulated to cause the outputted sound signal to maintain in am optimal state of frequency response.
Description
Technical field
The present invention relates to the adjustment of horn frequency response, refer to a kind of system and method that loudspeaker is carried out automatically the frequency-response equalization adjustment especially; In the time of in loudspeaker are mounted to an electronic installation, a set CPU in this electronic installation, can calculate change yield value (equalizing gain) such as a group immediately and it is stored in the digital eqalizing cricuit, make this eqalizing cricuit can comply with these yield values in the future, automatically these loudspeaker are carried out the adjustment of frequency response.
Background technology
Nearly recent decades, because the fast development of scientific and technological industry, the step of people's life and work is accelerated with competitive current market condition, convenient means of transportation efficiently also make the zone of industrial and commercial development enlarge gradually, people are in every day busy stroke, for promoting operating efficiency, and the quality of making the life better, degree to electronic dictionary, electronic notebook, personal digital aid (PDA) (personal digital assistance) and mobile phone electronic installations such as (mobile phone) rely on grows with each passing day.At present, these electronic installations have not only become people works and goes up indispensable instrument, and in some people's daily life, these devices also become the some of life.Therefore, guarantee that these devices have good audio quality, promptly become general user or Communications service dealer the common basic demand of paying close attention to.
In recent years, because electronic installations such as various electronic dictionary, electronic notebook, personal digital aid (PDA) and mobile phone, can be people some necessary information in routine work and the life are provided, no matter these electronic installations belong to electronic dictionary, electronic notebook, personal digital aid (PDA) or mobile phone, the voice messaging of its output, all it is played back by loudspeaker of being installed in these electronic installations, so user for frequent these devices of use, the quality of these electronic installation audio output qualities promptly becomes general user's basic demand.
In view of this, at present, the design of these electronic installations and manufacturer, after in these electronic installations, loudspeaker being installed, all can be at frequency response that these loudspeaker produced and the best audio of expecting generation, carry out the comparison of frequency response, and by adjusting resistance and the capacitance on the change circuit (equalizer) of waiting connected, to make these loudspeaker obtain suitable yield value (gain), effectively proofread and correct the frequency response of this loudspeaker output, make its can be in the frequency range of common people's sense of hearing (20Hz～20KHz), produce best audio.
Because traditionally, the loudspeaker of being installed on to these electronic installations, when carrying out the adjustment such as gradeization (equalization tuning) in each frequency range, generally all the output audio in each sampling frequency scope is tested by tester, utilize manual type again, adjust resistance and capacitance on the circuit such as gradeization that is connected repeatedly, can produce optimal output frequency response to make these loudspeaker.Yet, this adjustment mode, not only operation redundant and complicated, time and effort consuming, and when on these electronic installations, changing loudspeaker again, need carry out tediously long adjustment operation again again, it is tired very easily to make staff's heart begin to detest, and performs a task perfunctorily, and causes the quality of adjustment operation to vary with each individual, can't maintain certain QC level, make the design of these electronic installations and manufacturer rather perplex.
In recent years, the dealer develops a kind of circuit such as digital gradeization (digital equalizer) at this problem though have partly, effectively solves this problem in the hope of utilizing these change circuit such as digital.But, the loudspeaker that these dealers are installed on to these electronic installations, when carrying out the adjustment such as gradeization (equalization tuning) in each frequency range, still the output audio in each sampling frequency scope is tested by tester, again the yield value of should adjusting that is calculated is imported this numeral etc. and changed in the circuit, make change circuit such as this numeral can make these loudspeaker produce optimal output frequency response, this practice, and the tediously long test program of improvement not yet in effect, and when these electronic installations are changed loudspeaker again, also still need carry out the test program of repetition again, cause manpower and time to go up meaningless waste.
Summary of the invention
When loudspeaker are installed on the electronic installation that overcomes prior art, carry out in each frequency range etc. the problems that taken place during change adjustment (equalization tuning), the special proposition of the present invention is a kind of carries out the system and method that frequency-response equalization is adjusted automatically to loudspeaker, main purpose of the present invention, but be Auto-Sensing and calculate in sense of hearing frequency range scope etc. change the adjustment yield value, make this eqalizing cricuit can comply with these yield values, automatically these loudspeaker are carried out the adjustment of frequency response.
The system that loudspeaker are carried out the frequency-response equalization adjustment automatically of the present invention comprises: loudspeaker, a CPU (CPU), a sound effect control circuit, a digital eqalizing cricuit, and a microphone.
After the method that loudspeaker are carried out the frequency-response equalization adjustment automatically of the present invention is achieved in that and in an electronic installation loudspeaker is installed, utilize a CPU (CPU) set on it by (audio controller) in the sound effect control circuit, the standard pronunciation source signal of the suitable frequency range scope of generation, make a digital eqalizing cricuit (digital equalizer) set in it after receiving this standard pronunciation source signal, can comply with its initial yield value (gain) earlier, by these loudspeaker this sound source signal is exported, and by after the microphone reception set in this electronic installation, be transmitted back to this CPU via this sound effect control circuit again, make this CPU that acoustic signal that is received and the ideal frequency response data that set are carried out frequency response (frequency response) comparison, calculate in this frequency range scope one group etc. and change adjustment yield value (equalization tuning gain), and this adjusted value inputed in this numeral eqalizing cricuit store, make in the future this eqalizing cricuit can comply with these adjusted values, these loudspeaker are carried out automatically the adjustment of frequency response, the acoustic signal that order is exported can remain on best frequency response state.
Use of the present invention loudspeaker are carried out system and method that frequency-response equalization adjusts automatically after, after the installation of finishing these loudspeaker, the operating personnel need not by tester fully to the output audio in each sampling frequency scope, carry out the test program of redundant and complicated again, or adjust resistance and capacitance repeatedly, can make the output acoustic signal of these loudspeaker, remain on best frequency response state.
Description of drawings
Below be description of drawings of the present invention:
Shown in Figure 1 is circuit structure block schematic diagram of the present invention;
Shown in Figure 2 is work flow schematic diagram of the present invention;
Shown in Figure 3 is ideal frequency response data frequency response schematic diagram among the present invention;
Shown in Figure 4 is the frequency response schematic diagram of the standard pronunciation source data among the present invention;
Loudspeaker do not carry out the frequency response schematic diagram of a digital audio-frequency data measured before the frequency response compensation among the present invention of being shown in Figure 5.
Main element parameter declaration among the figure:
Loudspeaker 10 CPU 20 sound effect control circuit 30
Numeral eqalizing cricuit 40 microphones 50
Embodiment
Below in conjunction with accompanying drawing the present invention is done detailed description:
At first referring to Fig. 1, mainly be after in an electronic installation, loudspeaker 10 being installed, utilize a set CPU 20 in this electronic installation, simulation also produces a sense of hearing frequency range (the standard source of sound archives in the scope of 20Hz～20KHz), and these source of sound archives are sent to a sound effect control circuit 30, by the data of this sound effect control circuit 30 according to these source of sound archives, produce the standard pronunciation source signal of a corresponding frequency range scope, and this sound source signal is sent to a set digital eqalizing cricuit 40 in this electronic installation, this numeral eqalizing cricuit 40 is after receiving this sound source signal, earlier according to a default initial yield value in it, this sound source signal is carried out initial compensation, by these loudspeaker 10 this sound source signal is exported again, after waiting a set microphone 50 in this electronic installation to receive this sound source signal that these loudspeaker 10 are exported, will be by this sound effect control circuit 30, this received sound source signal is transmitted back to this CPU 20, make this CPU 20 can carry out the comparison of frequency response at sound source signal that is received and the ideal frequency response that sets data, and calculate in this frequency range scope, tackling these loudspeaker 10 carries out one group of frequency response compensation etc. and changes the adjustment yield value, and this adjusted value of being tried to achieve inputed in this numeral eqalizing cricuit 40 store, make in the future this eqalizing cricuit 40 can comply with these adjusted values, these loudspeaker are carried out automatically the adjustment of frequency response, the acoustic signal that order is exported can remain on best frequency response state.
In the present invention, when this CPU 20 is complied with a designed software in it, when the loudspeaker of being installed in this electronic installation 10 are carried out the frequency response compensation, consult shown in Figure 2, the essential loudspeaker of installing at institute's desire earlier 10 in this electronic installation, according to its specification, design in sense of hearing frequency range (the ideal frequency response data in the scope of 20Hz～20KHz), consult and Figure 3 shows that this ideal frequency response data frequency response diagram, and with these data storing in this electronic installation in the set memory, in this memory and store one group at sense of hearing frequency range (the standard pronunciation source data in the scope of 20Hz～20KHz) is consulted the frequency response chart that Figure 4 shows that this standard pronunciation source data.
After these loudspeaker 10 are mounted to this electronic installation, start the power supply of this electronic installation, see shown in Fig. 2 again, this CPU 20 promptly reads this standard pronunciation source data in this memory, and be sent to this sound effect control circuit 30, make it comply with this standard pronunciation source data and produce a standard pronunciation source signal, and pass through this numeral eqalizing cricuit 40 according to a default initial yield value in it, it is compensated, by these loudspeaker 10 this sound source signal is exported again, after waiting this microphone 50 to receive this sound source signal, will be converted to digital audio-frequency data via this sound effect control circuit 30; Consult the frequency response chart that Figure 5 shows that this digital audio-frequency data, and this voice data is transmitted back to this CPU 20.
At this moment, this CPU 20 will be at this voice data that is received and this ideal frequency response data, according to sampling frequency, carry out the comparison of frequency response one by one, again as shown in Figure 2, calculating in each sampling frequency scope these loudspeaker 10 of reply carries out one group of the frequency response compensation etc. and changes the adjustment yield value, and with this yield value of being tried to achieve, input in this numeral eqalizing cricuit 40 and store, make in the future this eqalizing cricuit 40 can comply with these yield values, these loudspeaker are carried out automatically the adjustment of frequency response, the acoustic signal that order is exported, can (in the scope of 20Hz～20KHz), all can meet ideal frequency response value shown in Figure 3, and remain on best frequency response state at sense of hearing frequency range.
So, after these loudspeaker 10 are mounted to this electronic installation smoothly, only need start the power supply of this electronic installation, can be by aforementioned techniques of the present invention, Auto-Sensing and calculate in sense of hearing frequency range scope etc. change the adjustment yield value, make this eqalizing cricuit can comply with these adjusted values, automatically these loudspeaker are carried out the adjustment of frequency response, so utilize these electronic installations of the present invention, after the installation of finishing loudspeaker, need not the operating personnel fully and pass through tester, to the output audio in each sampling frequency scope, carry out the test program of redundant and complicated, or adjust to wait resistance and capacitance on the change circuit repeatedly, can make the output acoustic signal of these loudspeaker, be adjusted to best frequency response state.
Though more than with embodiment the present invention is described, therefore do not limit scope of the present invention, only otherwise break away from main idea of the present invention, can carry out various forms of changes.
Claims (7)
1, a kind of system that loudspeaker are carried out the frequency-response equalization adjustment automatically, it is installed in the electronic installation, it is characterized in that: this system comprises:
Standard source of sound archives are simulated and produced to one CPU, adorns one in it and can compare and the software of changing the adjustment yield value such as calculate the voice data that is received and the ideal frequency response data of adorning in it;
One sound effect control circuit connects described CPU, produces a standard pronunciation source signal according to the data of aforementioned source of sound archives;
One digital eqalizing cricuit connects described sound effect control circuit and described CPU, an interior default initial yield value, and can store change adjustment yield value such as aforementioned and then carry out the frequency response adjustment automatically;
One loudspeaker connect described digital eqalizing cricuit, are used to export a sound source signal;
One microphone connects described loudspeaker and described sound effect control circuit, in order to receiving the sound source signal of loudspeaker output, and with it by described sound effect control circuit, pass CPU back.
2, a kind of method of loudspeaker being carried out automatically the frequency-response equalization adjustment, it is characterized in that: loudspeaker are installed by this system in an electronic installation after, utilize a CPU set on it, by a sound effect control circuit, produce the standard pronunciation source signal of a suitable frequency range, make a digital eqalizing cricuit set in it after receiving this standard pronunciation source signal, can be by these loudspeaker with this sound source signal output, and by after the microphone reception set in this electronic installation, be transmitted back to this CPU via this sound effect control circuit again, make this CPU that acoustic signal that is received and the ideal frequency response data that set are carried out the frequency response comparison, calculate in this frequency range scope one group etc. and change the adjustment yield value, and these yield values are inputed in this numeral eqalizing cricuit store, make this eqalizing cricuit can comply with these adjusted values, these loudspeaker are carried out the adjustment of frequency response automatically, and the acoustic signal that order is exported can remain on best frequency response state.
3, method of loudspeaker being carried out automatically the frequency-response equalization adjustment as claimed in claim 2, it is characterized in that: wherein this electronic installation domestic demand elder generation is at the loudspeaker of institute's desire installation, according to its specification, design the ideal frequency response data in suitable frequency range scope, and with these data storing in this electronic installation in the set memory, make this CPU according to a default software in it, when this electronic installation is activated, can in this memory, read these data, by this sound effect control circuit, produce the standard pronunciation source signal of a suitable frequency range again.
4, method of loudspeaker being carried out automatically the frequency-response equalization adjustment as claimed in claim 2, it is characterized in that: wherein should receive the sound source signal that this sound effect control circuit transmits by the numeral eqalizing cricuit, will be according to a default initial yield value in it, it is compensated, by these loudspeaker this sound source signal is exported again.
5, method of loudspeaker being carried out automatically the frequency-response equalization adjustment as claimed in claim 2, it is characterized in that: wherein this sound effect control circuit is after receiving this sound source signal that this microphone transmits, be converted into digital audio-frequency data, and it is transmitted back to this CPU.
6, method of loudspeaker being carried out automatically the frequency-response equalization adjustment as claimed in claim 2, it is characterized in that: wherein this CPU is according to sampling frequency, this standard pronunciation source data at this voice data that is received and former output, carry out the comparison of frequency response one by one, and calculate in each sampling frequency scope, these loudspeaker should carry out change adjustment yield values such as a group of frequency response compensation, and with this yield value of being tried to achieve, input to storage in this numeral eqalizing cricuit.
7, as claim 2,3,4, the 5 or 6 described methods that loudspeaker are carried out the frequency-response equalization adjustment automatically, it is characterized in that: wherein the standard pronunciation source signal of this suitable frequency range can be the standard source of sound archives in the sense of hearing frequency range 20Hz-20KHz scope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01116194 CN1275496C (en) | 2001-05-30 | 2001-05-30 | Automatic loudspeaker frequency response equating regulation system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01116194 CN1275496C (en) | 2001-05-30 | 2001-05-30 | Automatic loudspeaker frequency response equating regulation system and method |
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| CN1388726A CN1388726A (en) | 2003-01-01 |
| CN1275496C true CN1275496C (en) | 2006-09-13 |
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| CN 01116194 Expired - Fee Related CN1275496C (en) | 2001-05-30 | 2001-05-30 | Automatic loudspeaker frequency response equating regulation system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102780797A (en) * | 2012-06-12 | 2012-11-14 | 苏州佳世达电通有限公司 | Mobile telephone and correction method of internal electroacoustic component thereof |
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| CN102104822A (en) * | 2009-12-18 | 2011-06-22 | 新唐科技股份有限公司 | Audio frequency adjusting system and method |
| CN102810056B (en) * | 2011-06-03 | 2015-04-22 | 宏碁股份有限公司 | Voice signal processing method and touch panel mobile phone using same |
| CN103188585B (en) * | 2011-12-31 | 2016-01-27 | 冠捷投资有限公司 | Audio frequency adjusting device and method of adjustment thereof |
| CN103327427B (en) * | 2012-03-19 | 2016-05-11 | 环旭电子股份有限公司 | For pre-treating method such as gradeization and the system thereof of radio system |
| CN105554629A (en) * | 2015-12-17 | 2016-05-04 | 歌尔声学股份有限公司 | Method and system for audio fidelity of loudspeaker |
| JP6461064B2 (en) * | 2016-09-28 | 2019-01-30 | 本田技研工業株式会社 | Acoustic characteristics calibration method |
| CN108111956A (en) * | 2017-12-26 | 2018-06-01 | 广州励丰文化科技股份有限公司 | A kind of sound equipment adjustment method and device based on amplitude-frequency response |
| CN109774629B (en) * | 2018-09-30 | 2022-02-01 | 长城汽车股份有限公司 | Vehicle sound effect automatic adjustment method and system and vehicle |
| CN110505554B (en) * | 2019-08-22 | 2022-06-17 | 广州番禺巨大汽车音响设备有限公司 | Method and system based on sound box with DSP (digital signal processor) enhanced function |
| CN112652327B (en) * | 2019-10-10 | 2023-04-25 | 北京新能源汽车股份有限公司 | Audio channel adaptation effect testing method and device and automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780797A (en) * | 2012-06-12 | 2012-11-14 | 苏州佳世达电通有限公司 | Mobile telephone and correction method of internal electroacoustic component thereof |
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Inventor after: Wu Yanhong Inventor after: Wang Jihui Inventor after: Liu Lu Inventor before: Cai Guoliang |
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Effective date of registration: 20170914 Address after: No. 6, No. 38, a village, Li Jia town, Cheng Jia County, Cheng County, Hebei, Langfang Co-patentee after: Wang Jihui Patentee after: Wu Yanhong Co-patentee after: Liu Lu Address before: Taipei City, Taiwan, China Patentee before: Inventec Corporation |
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