CN114205714A - Noise-shaping type volume adjustment system and method - Google Patents
Noise-shaping type volume adjustment system and method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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Abstract
The application provides a noise-shaping volume adjustment system, which comprises a gain control device, a noise-shaping volume adjustment device and a sound output device. The gain control device outputs a volume adjustment signal according to user operation. The noise-shaping volume adjusting device is arranged at the output end of the gain control device and receives the volume adjusting signal, wherein the noise-shaping volume adjusting device comprises a noise-shaping module, a mapping module arranged at the output end of the noise-shaping module and a volume adjusting module arranged at the output end of the mapping module. The noise shaping type volume adjusting device outputs the gain sound source signal to the original sound source signal according to the gain value. And the sound output device receives the gain volume signal and converts the gain volume signal into a sound signal to be output.
Description
Technical Field
The present application provides a volume adjustment system and method, and more particularly, to a noise-shaping volume adjustment system and method.
Background
Audio electronics (Audio electronics) refers broadly to a device that uses electronic circuit design to perform interconversion between Audio and electronic signals, but Audio is generally a generic term referring to all devices used to play or record Audio signals.
With the development of technology, people have higher and higher requirements for entertainment quality, for example, people seek clearer sound quality, so that improvement on sound is not only limited, but also the people need to be comfortable in the process of adjusting the volume.
In the conventional volume adjustment system, the volume adjustment is adjusted according to the gain according to the adjusted rate, but in the conventional volume adjustment method, discontinuous noise is generated in the user's ear according to the rate (for example, the rate is 0.2ms/6dB), which makes the user's ear uncomfortable during the volume adjustment.
Disclosure of Invention
The application provides a noise-adjusting volume adjusting system, which comprises a gain control device, a noise-adjusting volume adjusting device and a sound output device. The gain control device outputs a volume adjustment signal according to user operation. The noise-adjusting volume adjusting device is arranged at the output end of the gain control device and receives the volume adjusting signal, wherein the noise shaping type volume adjusting device comprises a noise shaping module, a mapping module arranged at the output end of the noise shaping module and a volume adjusting module arranged at the output end of the mapping module, the noise shaping module switches to output an ascending step wave signal when the received volume adjusting signal is an ascending section signal or switches to output a descending step wave signal when the received volume adjusting signal is a descending section signal, the mapping module is used for sequentially mapping and outputting a plurality of volume adjusting signals according to the ascending step wave signal or the descending step wave signal, the volume adjusting module adjusts the gain value of the original sound source signal according to the volume adjusting signal and outputs a gain sound source signal. And the sound output device receives the gain volume signal and converts the gain volume signal into a sound signal to be output.
The present application further provides a noise-shaping type volume adjustment method, comprising: the user operates the gain control device to make the gain control device output a volume adjusting signal to the noise-shaping volume adjusting device; the noise shaping module of the noise shaping volume adjusting device converts and outputs an ascending step wave signal when the received volume adjusting signal is an ascending section signal or converts and outputs a descending step wave signal to the mapping module when the received volume adjusting signal is a descending section signal; the mapping module is used for mapping and outputting a plurality of volume adjusting signals to the volume adjusting module according to the received ascending step wave signal or the descending step wave signal in sequence; the volume adjusting signal adjusts the gain value of the original sound source signal and outputs a gain sound source signal to the sound output device; and the sound output device receives the gain volume signal and converts the gain volume signal into a sound signal to be output.
Therefore, compared with the hardware in the prior art, the method and the device are more flexible, and the quality of event detection can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a block diagram of a noise-shaping volume adjustment system according to an embodiment of the present disclosure.
Fig. 2 is a block diagram of a noise-shaping volume adjustment device according to an embodiment of the present disclosure.
Fig. 3 is a block diagram of a noise shaping module according to an embodiment of the present disclosure.
Fig. 4 is a flowchart illustrating a noise shaping type volume adjustment method according to an embodiment of the present disclosure.
100: a noise-shaping volume adjustment system; 10: a gain control device; 20: a noise-shaping volume adjustment device; 30: a sound output device; OV: an original source signal.
Detailed Description
The detailed description and technical contents of the present application will now be described with reference to the drawings. Further, the drawings in the present application are not necessarily drawn to scale for illustrative convenience, and the drawings and the scale are not intended to limit the scope of the present application and will be described in advance.
Referring to fig. 1 to 3, a block diagram of a noise-shaping volume adjustment system, a noise-shaping volume adjustment device, and a noise-shaping module according to the present invention is shown in the following, wherein:
the combination of devices, modules or units and their corresponding functions performed in the noise-shaping volume adjustment system 100 of the present application can be cooperatively performed by a single chip or a combination of multiple chips, and the number of the chip configurations is not limited in the scope of the present application. The chip may be, but is not limited to, a Processor (Processor), a Central Processing Unit (CPU), a Microprocessor (Microprocessor), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or other similar devices or combinations thereof that can process, convert, or otherwise perform a particular function on information or signals, and is not limited in this Application.
The noise-shaping volume adjustment system 100 of the present application mainly includes a gain control device 10, a noise-shaping volume adjustment device 20, and an audio output device 30.
The gain control device 10 outputs a volume adjustment Signal according to a user operation, and the gain control device 10 may (but is not limited to) be a device capable of generating signals, such as a Digital Signal Processor (DSP), a function Signal generator (function generator), an Arbitrary Waveform Generator (AWG), and a Signal generator (Signal generator), and is not limited in this application.
The noise-shaping volume adjustment device 20 is disposed at the output end of the gain control device 10 for receiving the volume adjustment signal and the original audio source signal OV provided by a microphone or a storage device. In the present embodiment, referring to fig. 2, the aforementioned noise-shaping volume adjustment apparatus 20 includes a noise-shaping module 22, a mapping module 24 disposed at an output end of the noise-shaping module 22, and a volume adjustment module 26 disposed at an output end of the mapping module 24.
The noise shaping module 22 converts and outputs an ascending step signal when the volume adjusting signal is an ascending section signal or converts and outputs a descending step signal when the volume adjusting signal is a descending section signal. Referring to fig. 3, the noise shaping module 22 includes a delay unit 222 having an input terminal connected to the gain control device 10 and a multi-level quantizer 224 having an input terminal connected to the delay unit 20, wherein the delay unit 222 includes a first adder 2222 having an input terminal connected to the gain control device 10, a second adder 2224 having an input terminal connected to the first adder 222 and the multi-level quantizer 224, and a delay 2226 having an input terminal connected to the second adder 2224, and an output terminal of the delay 2226 is connected to the first adder 2222.
The first Adder 2222 and the second Adder 2224 may be, but are not limited to, adders (adders), Half adders (Half adders), Full adders (Full adders), ripple carry adders, carry look ahead Adder implementations, or other digital circuits, logic gates, or combinations thereof for performing addition operations, and are not limited in this application.
The delay 2226 may be, but is not limited to, an Integrator (Integrator), a Counter (Counter), and other circuits or combinations thereof that can be used for signal delay or integration, and is not limited in this application.
Referring to fig. 1, the sound output device 30 receives the gain volume signal and converts the gain volume signal into a sound signal for outputting. The audio output device 30 may be, but is not limited to, a speaker, an electrodynamic speaker, a piezoelectric speaker, an electrode speaker, a plasma speaker, etc. which can convert the current frequency into audio, and is not limited in the present application.
In the above description, the working procedure of the present application will be further described below with reference to fig. 4, which is a schematic flow chart of the noise shaping type volume adjustment method of the present application:
first, the user operates the gain control device 10 and causes the gain control device 10 to output a volume adjustment signal to the noise-shaped volume adjustment device 20 (step S201).
In this embodiment, the volume adjustment signal is a rising signal or a falling signal, the rising signal may be a rising interval from 0 (minimum) to 1 (maximum) in one embodiment, and the falling signal may be a falling interval from 1 (maximum) to 0 (minimum) in one embodiment.
In other embodiments, the peak values and waveforms of the up-stage signal and the down-stage signal can be adjusted according to the actual content, and are not limited in this application.
Further, the noise shaping module 22 of the noise shaping type volume adjustment device 20 converts the received volume adjustment signal into an up step signal according to the received volume adjustment signal or converts the received volume adjustment signal into a down step signal according to the received volume adjustment signal to the mapping module 24 (step S202).
In this embodiment, the noise shaping module 22 outputs the rising step signal or the falling step signal according to the following relation:
A[N]＝X[N]+Y[N-1]-A[N-1]；
wherein, X [ N ] is a volume adjustment signal inputted to the delay unit 222 at the nth stage, Y [ N ] is the rising step wave signal or the falling step wave signal outputted at the nth stage, Y [ N-1] is the rising step wave signal or the falling step wave signal outputted at the N-1 th stage, a [ N ] is an output signal outputted by the delay unit 222 to the multi-level quantizer 224 at the nth stage, a [ N-1] is an output signal outputted by the delay unit 222 to the multi-level quantizer 224 at the N-1 th stage, M is a level value preset by the multi-level quantizer 224, and floor () is a floor function. Wherein M is a positive integer.
Further, the mapping module 24 sequentially maps and outputs a plurality of volume adjusting signals to the volume adjusting module 26 according to the received rising step signal or falling step signal (step S203).
In this embodiment, the mapping module 24 outputs the volume adjustment signal according to the following relationship:
if Y [ N ]]≤2(Z-1)Then, then
If Y [ N ]]>2(Z-1)Then, then
Wherein, Y [ N ] is the rising step wave signal or the falling step wave signal inputted to the mapping module 24 at the Nth stage, D [ N ] is the volume adjusting signal outputted by the Nth stage, Z is a positive integer, and α is the default volume gain unit (dB).
Further, the volume adjustment module 26 adjusts the gain value of the original audio source signal OV and outputs the gain audio source signal to the audio output device 30 (step S204).
The volume adjustment module 26 outputs the gain sound source signal according to the following relation:
wherein, D [ N ] is the volume adjustment signal input to the volume adjustment module 26 at the nth stage of the mapping module 24, M [ N ] is the original sound source signal OV input to the volume adjustment module 26 at the nth stage, and V [ N ] is the gain sound source signal output by the volume adjustment module 26 at the nth stage.
Finally, the sound output device 30 receives the gain volume signal and converts the gain volume signal into a sound signal to be output and heard by the user (step S205).
In summary, compared with the prior art, the instant effect of adjusting the volume is less obvious, and the user can feel more comfortable when adjusting the volume.
The above detailed description is only for the preferred embodiment of the present application, and the scope of the present application shall not be limited thereby, and all equivalent changes and modifications made by the present application shall still fall within the scope of the present application.
Claims (10)
1. A noise-shaped volume adjustment system, comprising:
a gain control device for outputting a volume control signal according to a user operation;
a noise-shaping volume adjusting device disposed at the output end of the gain control device and receiving the volume adjusting signal, wherein the noise shaping type volume adjusting device comprises a noise shaping module, a mapping module arranged at the output end of the noise shaping module and a volume adjusting module arranged at the output end of the mapping module, the noise shaping module switches to output an ascending step wave signal when the received volume adjusting signal is an ascending section signal or switches to output a descending step wave signal when the received volume adjusting signal is a descending section signal, the mapping module is used for sequentially mapping and outputting a plurality of volume adjusting signals according to the ascending step wave signal or the descending step wave signal, the volume adjusting module adjusts the gain value of the original sound source signal according to the volume adjusting signal and outputs a gain sound source signal; and
and the sound output device receives the gain volume signal and converts the gain volume signal into a sound signal to be output.
2. The noise-shaping volume adjustment system of claim 1, wherein the noise-shaping module comprises a delay cell having an input connected to the gain control device and a multi-level quantizer having an input connected to the delay cell, the delay cell comprising a first adder having an input connected to the gain control device, a second adder having an input connected to the first adder and the multi-level quantizer, and a delay having an input connected to the second adder, an output of the delay being connected to the first adder.
3. The noise-shaped volume adjustment system of claim 2, wherein the noise-shaping module outputs the up-step signal or the down-step signal according to the following relationship:
A[N]＝X[N]+Y[N-1]-A[N-1]；
wherein, X [ N ] is the N stage input to delay element the volume control signal, Y [ N ] is the N stage output rise step wave signal or fall step wave signal, Y [ N-1] is the N-1 stage output rise step wave signal or fall step wave signal, A [ N ] is delay element output to the output signal of multi-step quantizer when N stage, A [ N-1] is the N-1 stage output delay element output to the output signal of multi-step quantizer, M is the preset step value of multi-step quantizer, floor () is floor function.
4. The noise-shaping volume adjustment system of claim 1, wherein the mapping module maps the volume adjustment signal according to the following relationship:
if Y [ N ]]≤2(Z-1)Then, then
If Y [ N ]]>2(Z-1)Then, then
Y [ N ] is the Nth stage input to the mapping module the ascending step wave signal or the descending step wave signal, D [ N ] is the Nth stage mapping output the volume adjustment signal, Z is a positive integer, and alpha is a default volume gain unit.
5. The noise-shaping volume adjustment system of claim 4, wherein the volume adjustment module outputs the gain audio signal according to the following relationship:
wherein, D [ N ] is the volume adjusting signal inputted to the volume adjusting module at the Nth stage of the mapping module, M [ N ] is the original sound source signal inputted to the volume adjusting module at the Nth stage, and V [ N ] is the gain sound source signal outputted by the volume adjusting module at the Nth stage.
6. A noise-shaping volume adjustment method, comprising:
the user operates the gain control device to enable the gain control device to output a volume control signal to the noise shaping type volume adjusting device;
the noise shaping module of the noise shaping volume adjusting device converts and outputs an ascending step wave signal when the received volume adjusting signal is an ascending section signal or converts and outputs a descending step wave signal to the mapping module when the received volume adjusting signal is a descending section signal;
the mapping module is used for mapping and outputting a plurality of volume adjusting signals to the volume adjusting module according to the received ascending step wave signal or the descending step wave signal in sequence;
the volume adjusting module adjusts the gain value of the original sound source signal and outputs the gain sound source signal to the sound output device; and
and the sound output device receives the gain volume signal and converts the gain volume signal into a sound signal to be output.
7. The method of claim 6, wherein the noise shaping module comprises a delay unit having an input connected to the gain control device and an input connected to the delay unit, the delay unit comprising a first adder having an input connected to the gain control device, a second adder having an input connected to the first adder and the multi-order quantizer, and a delay having an input connected to the second adder, an output of the delay connected to the first adder.
8. The noise-shaping volume adjustment method of claim 7, wherein the noise-shaping module outputs the up-step signal or the down-step signal according to the following relation:
A[N]＝X[N]+Y[N-1]-A[N-1]；
wherein, X [ N ] is the N stage input to delay element the volume control signal, Y [ N ] is the N stage output rise step wave signal or fall step wave signal, Y [ N-1] is the N-1 stage output rise step wave signal or fall step wave signal, A [ N ] is delay element output to the output signal of multi-step quantizer when N stage, A [ N-1] is the N-1 stage output delay element output to the output signal of multi-step quantizer, M is the preset step value of multi-step quantizer, floor () is floor function.
9. The method of claim 6, wherein the mapping module maps the volume adjustment signal according to the following relationship:
if Y [ N ]]≤2(Z-1)Then, then
If Y [ N ]]>2(Z-1)Then, then
Y [ N ] is the Nth stage input to the mapping module the ascending step wave signal or the descending step wave signal, D [ N ] is the Nth stage mapping output the volume adjustment signal, Z is a positive integer, and alpha is a default volume gain unit.
10. The method of claim 6, wherein the volume adjustment module outputs the gain audio signal according to the following relationship:
wherein, D [ N ] is the volume adjusting signal inputted to the volume adjusting module at the Nth stage of the mapping module, M [ N ] is the original sound source signal inputted to the volume adjusting module at the Nth stage, and V [ N ] is the gain sound source signal outputted by the volume adjusting module at the Nth stage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW109127582 | 2020-08-13 | ||
| TW109127582A TW202207213A (en) | 2020-08-13 | 2020-08-13 | Noise shaping type volume adjustment system, method |
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| CN114205714B CN114205714B (en) | 2024-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114203195A (en) * | 2020-08-13 | 2022-03-18 | 漳州立达信光电子科技有限公司 | Noise remodeling type digital automatic gain control system and method |
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| TWI826116B (en) * | 2022-11-15 | 2023-12-11 | 宏碁股份有限公司 | Computer system and output adjusting method used for audio output apparatus |
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| JP2005318123A (en) * | 2004-04-27 | 2005-11-10 | Asahi Kasei Microsystems Kk | Calibration apparatus and calibration method in da converter system |
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| CN114205714B (en) | 2024-03-29 |
| TW202207213A (en) | 2022-02-16 |
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