CN1171142C - Programmable tone quality control circuit on mainboard - Google Patents
Programmable tone quality control circuit on mainboard Download PDFInfo
- Publication number
- CN1171142C CN1171142C CNB991243129A CN99124312A CN1171142C CN 1171142 C CN1171142 C CN 1171142C CN B991243129 A CNB991243129 A CN B991243129A CN 99124312 A CN99124312 A CN 99124312A CN 1171142 C CN1171142 C CN 1171142C
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- control chip
- tonequality
- control
- pin
- signal
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Abstract
The present invention relates to a programmable tone control circuit on a mainboard. A tone control chip is coupled between a codec and an amplifier on the mainboard and is used for receiving the tone source signal of the codec, and a clock signal and a data signal generated by a game port are utilized for controlling the tone control chip so as to enable the tone control chip to generate an output signal which is received and amplified by the amplifier. Subsequently, a loudspeaker outputs high tone quality sound.
Description
The present invention relates to a kind of tone control circuit, the tone control circuit able to programme on particularly a kind of motherboard.
Please refer to Fig. 1, it is the source of sound generation circuit on the known motherboard.Couple a codec (CODEC) 20 on south bridge control chip 10, it can produce sound source signal, and sound source signal is sent to amplifier 30 sound source signal is amplified, and produces audio frequency output via output line (LINE-OUT) 40.
Yet the source of sound on the known motherboard produces circuit can be amplified the sound source signal that codec 20 produces via amplifier 30, and the function of amplifier 30 is merely able to the sound of sound source signal be amplified or reduce, and does not have the function of control sound source signal sound tonequality.That is the source of sound on the known motherboard produces the control function that circuit does not have stereoeffect (Stereo), bass effect (Bass), high pitch effect (Treble), L channel effect (Left Volume) and R channel effect (Right Volume).If will reach above-mentioned functions, be merely able to utilize software to control, can increase the load of CPU like this, and reduce the treatment effeciency of CPU.
Therefore the invention provides the tone control circuit able to programme on a kind of motherboard, the tonequality control chip is coupled between the codec and amplifier on the motherboard,, reach the control of various effects in order to change various audio frequencies.
The invention provides the tone control circuit able to programme on a kind of motherboard, utilize the tonequality control chip to change various audio frequencies, reach the control of various effects, and reduce the load of CPU, improve the treatment effeciency of CPU.
The invention provides the tone control circuit able to programme on a kind of motherboard, comprising:
Codec, it can produce sound source signal; The tonequality control chip is coupled to codec, in order to receiving sound source signal, and controls tonequality via clock signal and data-signal, the generation output signal; Amplifier is coupled to the tonequality control chip, in order to the reception output signal, and amplifies output signal; Control port is coupled to the tonequality control chip, in order to produce the clock signal and the data-signal of control tonequality.
The invention provides the tone control circuit able to programme on a kind of motherboard, comprising:
Control chip group comprises controller and control port; Codec is coupled to the controller of control chip group, in order to produce sound source signal; The tonequality control chip is coupled to codec, is used for receiving sound source signal, and the tonequality control chip is coupled to the control port of control chip group, and clocking and data-signal control the tonequality of sound source signal, produces output signal; Amplifier is coupled to the tonequality control chip, is used for receiving output signal, and amplifies output signal.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
The simple declaration of accompanying drawing:
Fig. 1 is that the source of sound on the known motherboard produces circuit diagram;
Fig. 2 is the control pin of tonequality control chip;
Fig. 3 is the connection diagram of tonequality control chip on motherboard;
Fig. 4 is the tone control circuit synoptic diagram able to programme on the motherboard of the present invention; And
Fig. 5 a, 5b, 5c and 5d are the pin figure of actual pin on the motherboard of preferred embodiment of the present invention.
The invention is characterized in the tonequality control chip is in the layout of on the motherboard of PC or portable computer, to improve the tonequality of computer institute output sound.
According to present embodiment, this tonequality control chip can use the model of being produced as the National Semiconductor company tonequality control chip as LMC1982.The control pin of this tonequality control chip as shown in Figure 2.The signal of this tonequality control chip 70 can be by the input (LEFT INPUT1) and 25th pin input (RIGHT INPUT1) as right sound source signal of its 4th pin as left sound source signal.And via the input of the clock (CLK) of the 1st pin and data (DATA) the signal input of the 28th pin control left and right sides sound source signal and be converted to have stereoeffect, the output signal of bass effect, high pitch effect, L channel effect and R channel effect.Produce L channel output (LOUT) via the 13rd pin more at last, and produce R channel output (ROUT) via the 16th pin.
Data-signal input and clock are input as two input ends of major control tonequality and audio.The data-signal input is the serial signal that is produced by controller outside, and its length is 16, and preceding 8 is address signal, in order to the selection function project, 8 of backs are data, in order to change the setting value of selected functional item, reach the purpose of tonequality and sound effect control.And the data transmission rate (data rate) of this data-signal input is 1MHz to the maximum.And this data-signal input must be imported coupling mutually with clock signal, and data-signal just belongs to effectively when the rising edge (rising clock edge) of clock sequence.And following table 1 is for to utilize data-signal input to select every function of tonequality control chip:
| The address (A7～A0) | Functional item | Data | The functional item setting value |
| 01000000 | Input is selected | xxxxxx00 xxxxxx01 | INPUT1 INPUT2 |
| 01000001 | Big volume, strengthen stereoeffect (Loudness, Enhanced Stereo) | xxxxxx00 ? xxxxxx01 ? xxxxxx10 ? xxxxxx11 | Big volume is closed, strengthen stereoeffect and close big volume unlatching, the enhancing stereoeffect is closed big volume and is closed, increase stereoeffect and open big volume unlatching, strengthen stereoeffect and open |
| 01000010 | Bass effect (Bass) | xxxx0000 xxxx0011 xxxx0110 xxxx1001 xxxx11xx | -12dB -6dB FLAT +6dB +12dB |
| 01000011 | High pitch effect (Treble) | xxxx0000 xxxx0011 xxxx0110 xxxx1001 xxxx11xx | -12dB -6dB FLAT +6dB +12dB |
| 01000100 | Left side volume (Left Volume) | xx000000 xx010100 xx101xxx xx11xxxx | 0dB -40dB -80dB -80dB |
| 01000101 | Right volume (Right Volume) | xx000000 xx010100 xx101xxx xx11xxxx | 0dB -40dB -80dB -80dB |
| 01000110 | Model selection (Mode Select) | xxxxx100 xxxxx101 xxxxx11x | The right single-tone (Mono) of left side single-tone (Mono) stereoeffect |
Table 1
Please refer to Fig. 3, it is the connection diagram of tonequality control chip on motherboard.This tonequality control chip 70 can input to the sound source signal that codec is exported the input end of tonequality control chip 70 on motherboard 45, as pin 4 and 25, and according to the signal that clock CLK pin 1 and data DATA pin 28 are received sound source signal is converted to have stereoeffect, the high tone quality voice signal of bass effect, high pitch effect, L channel effect and R channel effect, export again this signal to the loudspeaker of outside to play out sound with high tone quality.
The control of above-mentioned effect can produce the clock CLK pin 1 and data DATA pin 28 that data-signals (MDATA) and clock signal (MCLK) input to tonequality control chip 70 by control port 110, uses the tonequality of the sound source signal that the control codec exports.
Please refer to Fig. 4, it is the tone control circuit synoptic diagram able to programme on the motherboard of the present invention.Motherboard 45 ' on be coupled to codec 60 by the AC97 controller 52 in the south bridge control chip 50, it can receive the control signal of AC97 controller 52, to produce sound source signal.Sound source signal is sent to the input end of the tonequality control chip 70 of Fig. 2, as pin 4 and 25, use sound source signal is converted to have stereoeffect, the output signal of bass effect, high pitch effect, L channel effect and R channel effect, and by the output terminal output of tonequality control chip 70, as pin 13 and 16.
Fig. 5 a, 5b, 5c and 5d are the pin figure of preferred embodiment of the present invention actual pin on motherboard.The W10 pin (SDD0/BITCLK) of south bridge control chip 50, V17 pin (SDD1/SDIN), V16 pin (SDD3/SYNC), Y16 pin (SDD4/SDOUT) and Y15 pin (SDD5/-ACRST) are coupled to the 6th pin (BIT_CLK), the 8th pin (SDATA_IN), the 10th pin (SYNC), the 5th pin (SDATA_OUT) and the 11st pin (RESET) of codec 60.
The 36th pin (LINE_OUT_R) of codec 60 and the 35th pin (LINE_OUT_L) are coupled to the 25th pin (LINEOUTR) and the 4th pin (LINEOUTL) of tonequality control chip 70.
The Y18 pin (SDD14/MS0) of game port, Y19 pin (SDD15/MS1) and T14 pin (GP10A/GP10B) are coupled to the 1st pin (MS0), the 28th pin (MS1) and the 27th pin (GP10A) of tonequality control chip 70 on the south bridge control chip 50.
At last, the 13rd pin (LOUT) of tonequality control chip 70 and the 16th pin (ROUT) are coupled to the 2nd pin (LOUT) and the 6th pin (ROUT) of amplifier (TPA122/LM4880M) 80.The 1st pin (OUTA) of amplifier 80 and the 7th pin (OUTB) are the sound source wire of output.
Therefore, advantage of the present invention is the tone control circuit able to programme that proposes on a kind of motherboard, and the tonequality control chip is coupled between the codec and amplifier on the motherboard, in order to change various audio frequencies, reaches the control of various effects.
But another advantage of the present invention provides the journey tone control circuit on a kind of motherboard, utilizes the tonequality control chip to change the control that various audio frequencies are reached various effects, and reduces the load of CPU, improves the treatment effeciency of CPU.
In sum; though the present invention with preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when can doing various changes and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (6)
1. the tone control circuit able to programme on the motherboard comprises:
One coder is in order to produce a plurality of sound source signals;
One tonequality control chip is coupled to this coder, in order to receiving those sound source signals, and via a clock signal and data-signal control tonequality, produces a plurality of output signals;
One amplifier is coupled to this tonequality control chip, in order to receiving those output signals, and amplifies those output signals; And
One control port is coupled to this tonequality control chip, in order to produce this clock signal and this data-signal of control tonequality.
2. tone control circuit able to programme as claimed in claim 1, wherein this control port is a game port.
3. tone control circuit able to programme as claimed in claim 1, wherein this tonequality control chip is a LMC1982 chip.
4. tone control circuit able to programme as claimed in claim 1 also comprises:
One control chip, this control chip comprise a controller and a control port that couples this coder.
5. tone control circuit able to programme as claimed in claim 4, wherein this control chip is a south bridge control chip.
6. tone control circuit able to programme as claimed in claim 4, wherein this controller is an AC97 controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991243129A CN1171142C (en) | 1999-11-15 | 1999-11-15 | Programmable tone quality control circuit on mainboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB991243129A CN1171142C (en) | 1999-11-15 | 1999-11-15 | Programmable tone quality control circuit on mainboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1296216A CN1296216A (en) | 2001-05-23 |
| CN1171142C true CN1171142C (en) | 2004-10-13 |
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ID=5283385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991243129A Expired - Lifetime CN1171142C (en) | 1999-11-15 | 1999-11-15 | Programmable tone quality control circuit on mainboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1171142C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7337026B2 (en) * | 2004-03-19 | 2008-02-26 | Via Technologies Inc. | Digital audio volume control |
| CN1304939C (en) * | 2004-06-09 | 2007-03-14 | 十速科技股份有限公司 | Full-digital speech outputtig device |
| US20060062407A1 (en) * | 2004-09-22 | 2006-03-23 | Kahan Joseph M | Sound card having feedback calibration loop |
| CN1320443C (en) * | 2004-10-20 | 2007-06-06 | 宇力电子股份有限公司 | Sound effect processing circuit |
-
1999
- 1999-11-15 CN CNB991243129A patent/CN1171142C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1296216A (en) | 2001-05-23 |
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Granted publication date: 20041013 |