CN101184348B - Method for improving audio frequency of television loudspeaker using EQ function - Google Patents
Method for improving audio frequency of television loudspeaker using EQ function Download PDFInfo
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- CN101184348B CN101184348B CN 200710074558 CN200710074558A CN101184348B CN 101184348 B CN101184348 B CN 101184348B CN 200710074558 CN200710074558 CN 200710074558 CN 200710074558 A CN200710074558 A CN 200710074558A CN 101184348 B CN101184348 B CN 101184348B
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Abstract
The invention discloses a method for improving the audio-frequency response of TV loudspeaker by utilizing EQ function, which is as follow: firstly, the frequency response curve of the loudspeaker is measured; the frequency points for compensation and attenuation are confirmed based on the frequency response curve, and the gain of a plurality of dB that is necessary to be increased or decreased is determined, and then which is adjusted by the EQ; the value of a register of an audio-frequency processing chip is changed by utilizing a software, thereby the compensation for the frequency response curve of the loudspeaker is completed. By utilizing the multi-segment EQ function of the audio-frequency processing chip, the adjustment for the gain of the frequency point can be implemented, so as to compensate the curve of the loudspeaker, so that the audio-frequency response can reach an ideal state, and the problem on the audio-frequency response can be improved effectively, thereby a better sound effect can be realized under the condition of low cost.
Description
[technical field]
This creation relates to the technology of utilizing the some frequency response that audio frequency sound is compensated, and particularly a kind of EQ of utilization function is improved the method that audio frequency of television loudspeaker rings.
[background technology]
Now increasing television audio process chip can realize by the gain that changes each frequency different sound effects all with the function of multistage EQ.And along with the pressure of product cost, the loud speaker cost that television set adopts can not be too high, loud speaker cheaply since be subjected to material the impact of technique etc., its frequency response curve is all not too level and smooth, rises and falls in Hz-KHz a lot, so the sound-reducing poor quality.Frequency response curve is rough, and namely loud speaker is different in each frequency gain when going back original sound, therefore when signal is reduced into sound, the sound of some frequencies is exaggerated, the sound of some frequencies is reduced, thereby causes the sound and the primary sound difference that restore larger, and sense of hearing is very poor.So most television sets are the television set of low and middle-end especially, the frequency response curve of its loud speaker is not ideal.
[summary of the invention]
For addressing the above problem, main purpose of the present invention is to provide a kind of EQ of utilization function to improve the method that audio frequency of television loudspeaker rings.
For achieving the above object, the technical scheme of this creation is: a kind of EQ of utilization function is improved the method that audio frequency of television loudspeaker rings, at first measure the frequency response curve of loud speaker, determine the frequency that needs compensate or decay according to frequency response curve, need to increase or reduce the gain of what dB, then adjust by EQ, utilize the value of software change audio processing chip register, thereby the frequency response curve of finishing loud speaker compensates.
Further, can record the loud speaker frequency response curve by the AP audio test system;
Further, according to the frequency response curve that records, excessive crest needs to reduce, and trough then needs to increase, thus definite frequency that need to compensate or decay.
Compared to prior art, the present invention is by utilizing the multistage EQ function of audio processing chip, the adjusting that frequency is gained, come the curve of loud speaker is compensated, make the audio frequency sound of system reach a desirable state, effectively improve the problem that audio frequency rings, obtaining good sound effect in the situation cheaply to reach.
[description of drawings]
Fig. 1 is that the ventional loudspeakers audio frequency rings curve chart;
Fig. 2 is that the audio frequency after adjusting by the inventive method rings curve chart;
Fig. 3 is the curve chart that improves by machine shake after the inventive method adjustment.
[embodiment]
A kind of EQ of utilization function of the present invention is improved the method that audio frequency of television loudspeaker rings, by utilizing the multistage EQ function of audio processing chip, and the adjusting that frequency is arbitrarily gained.At first measure the frequency response curve of loud speaker, the frequency response curve of described loud speaker, loud speaker producer generally can provide, and can certainly record with the AP audio test system, determine the frequency that needs compensate or decay according to this frequency response curve, the gain of which frequency need to increase or reduce.Specifically be exactly according to the frequency response curve that records, excessive crest needs to reduce, and trough then needs to increase, and then passes through the value of the register of software change audio processing chip.According to the curve that records, determine that what frequency will increase or reduce the gain of what dB, and the value of each frequency and gain has a value corresponding with it at the audio processing chip internal register, therefore this value is write into the audio processing chip register by CPU to be got final product, thereby the frequency response curve of finishing loud speaker compensates, and makes the audio frequency sound of system reach a desirable state.
Please refer to shown in Figure 1, the audio frequency of loud speaker rings curve has two peak dots at 1KHz and two frequencies of 3KHz, utilize the EQ function of audio processing chip, at 1KHz and two frequencies of 3KHz it is carried out an amount of decay, the yield value that reduces as required, this value is write into the register of audio processing chip by CPU, thereby so that the audio frequency of whole system sound curve is more straight, realized reasonable sound effect.
Please refer to shown in Figure 2ly, to ring curve mainly be to be difficult to touch the mark at high band to the audio frequency of loud speaker generally speaking.For example therefore audio frequency sound can utilize EQ to adjust than low tens dB of Mid Frequency when frequency is higher than 5kHz, arranges as follows:
Filter type Filter Type=High Shelf
Frequency Freq=5kHz
Gain G ain=10dB
Bandwidth BW/Q=1
Thereby the frequency response that is higher than 5kHz has been raised 10dB, the audio frequency sound of the high band of loud speaker is compensated after acting on loud speaker.
Certainly, also can utilize EQ to improve the machine shake of television set, its principle is consistent with the principle of improving frequency response.At first utilize the method for frequency sweep to find the frequency that causes the TV set shake, then this frequency is carried out suitable decay, the method for decay is consistent with the method for improving frequency response, therefore repeat no more.As shown in Figure 3, when speaker volume is larger, sound frequency will the generator shake during near the resonance frequency point of television set.At this moment, can improve by the adjustment that utilizes EQ, the frequency when shaking such as machine is 150Hz, then arranges as follows by EQ:
Filter type Filter Type=Notch
Frequency Freq=150Hz
Bandwidth BW/Q=0.2
Thereby so that the significantly decay that 150Hz and near frequency response thereof obtain, act on loud speaker after, also just be not easy to make the shake of television set generator.
Most preferred embodiment described above only is that the present invention is set forth and illustrates, but is not limited to disclosed any concrete form, and it is possible carrying out many modifications and variations.
Claims (3)
1. one kind is utilized the EQ function to improve the method that audio frequency of television loudspeaker rings, it is characterized in that: the frequency response curve of at first measuring loud speaker, determine the frequency that needs compensate or decay according to frequency response curve, need to increase or reduce the gain of what dB, then adjust by EQ, write in the audio processing chip register by the yield value that CPU will need to increase or reduce, in the audio processing chip register memory storage value corresponding with the value of each frequency and gain, utilize software change audio processing chip register value, thereby the frequency response curve of finishing loud speaker compensates.
2. the EQ of utilization function as claimed in claim 1 is improved the method that audio frequency of television loudspeaker rings, and it is characterized in that: can record the loud speaker frequency response curve by the AP audio test system.
3. the EQ of utilization function as claimed in claim 2 is improved the method that audio frequency of television loudspeaker rings, it is characterized in that: according to the frequency response curve that records, excessive crest needs to reduce, and trough then needs to increase, thus definite frequency that need to compensate or decay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710074558 CN101184348B (en) | 2007-05-23 | 2007-05-23 | Method for improving audio frequency of television loudspeaker using EQ function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710074558 CN101184348B (en) | 2007-05-23 | 2007-05-23 | Method for improving audio frequency of television loudspeaker using EQ function |
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| Publication Number | Publication Date |
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| CN101184348A CN101184348A (en) | 2008-05-21 |
| CN101184348B true CN101184348B (en) | 2013-01-09 |
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| CN 200710074558 Expired - Fee Related CN101184348B (en) | 2007-05-23 | 2007-05-23 | Method for improving audio frequency of television loudspeaker using EQ function |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246537A (en) * | 2008-12-09 | 2011-11-16 | 皇家飞利浦电子股份有限公司 | Method of adjusting an acoustic output from a display device |
| CN102421006B (en) * | 2011-11-24 | 2014-01-15 | 厦门华侨电子股份有限公司 | Method for improving mechanical vibration of flat television set and apparatus thereof |
| CN104954948B (en) * | 2015-06-16 | 2018-07-13 | 深圳市冠旭电子股份有限公司 | A kind of method and apparatus of the automatic adjusument balanced device based on earphone |
| CN106878642A (en) * | 2017-02-13 | 2017-06-20 | 微鲸科技有限公司 | Audio automatic equalization system and method |
| CN107071680B (en) * | 2017-04-19 | 2019-09-13 | 歌尔科技有限公司 | A kind of tuning method and apparatus of acoustic product |
| CN110913325A (en) * | 2019-11-26 | 2020-03-24 | 科大讯飞股份有限公司 | Automatic tuning method, related device and readable storage medium |
| CN111787479B (en) * | 2020-08-03 | 2022-04-05 | 重庆百瑞互联电子技术有限公司 | Method and system for correcting listening sensation of TWS earphone |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2465434Y (en) * | 1999-08-02 | 2001-12-12 | 广东爱浪数字技术有限公司 | Frequency equalizing automatic regulator |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2465434Y (en) * | 1999-08-02 | 2001-12-12 | 广东爱浪数字技术有限公司 | Frequency equalizing automatic regulator |
Non-Patent Citations (3)
| Title |
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| 刘荣彬.AV功放原理与维修讲座(7)――第七讲 频谱均衡控制及显示.《电子世界》.2000,(第08期), |
| 刘荣彬.AV功放原理与维修讲座(7)――第七讲 频谱均衡控制及显示.《电子世界》.2000,(第08期), * |
| 宫雪等.集成化多频段图示均衡器及其应用.《集成电路应用》.1995,(第01期), * |
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