CN116567488A - Audio plosive processing method, device, equipment and storage medium - Google Patents
Audio plosive processing method, device, equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention relates to the technical field of audio processing, and discloses an audio plosive processing method, device, equipment and storage medium, which are used for reducing pop sound generated by rising and falling step response of an output end of a Line-out driver. The method comprises the following steps: receiving a target enabling signal through the line output driver, and generating a target response operation of the line output driver according to the target enabling signal, wherein the target response operation comprises: enabling or disabling; when the target response operation is started, the coupling capacitor is charged through the pre-charge and discharge circuit, whether the coupling capacitor is charged is judged, and if yes, the line output driver is started; when the target response operation is forbidden, the pre-charge and discharge circuit discharges the coupling capacitor, judges whether the coupling capacitor is completely discharged, and if yes, enables the line output driver to be closed.
Description
Technical Field
The present invention relates to the field of audio processing technologies, and in particular, to an audio plosive processing method, apparatus, device, and storage medium.
Background
Pop tones (plosive) in an audio system refer to annoying audio transient noise that typically occurs when the audio Line-out driver is enabled to start up or shut down. In addition to the audio performance indicators such as total harmonic distortion, noise, and flatness of the frequency response, pop sound is also an important and objective indicator. As the desire for audio performance increases, the attenuation of pop sound is imperceptible to the ear, which has become a key point in audio products. Most audio Line-out drivers are single supply, they operate between supply VDD and ground GND, and these drivers must have a common mode voltage to operate properly. To obtain maximum signal swing, the common mode voltage is typically set to half vmid=vdd/2 of the supply voltage.
The audio Line-out transmits the analog signal converted by the DAC, has higher reduction degree, and the output is connected with the coupling capacitor to the power amplifier, only outputs audio alternating current power, and does not pass through direct current, so as to protect the direct current working point of the power amplifier from being offset and damaged. The Line-out driver enable signal pdb will have a step-up response of 0 to Vmid at the output Vout of the driver at the moment the driver is turned on, resulting in the power amplifier emitting an offensive pop tone. Conversely, when the pdb is enabled, the output Vout will have a stepped down response from Vmid to 0, which will also cause the power amplifier to emit an audible pop sound.
Disclosure of Invention
The invention provides an audio plosive processing method, device, equipment and storage medium, which are used for reducing pop sound generated by rising and falling step response of an output end of a Line-out driver.
The first aspect of the present invention provides an audio plosive processing method, including:
receiving a target enabling signal through a preset line output driver, and generating a target response operation of the line output driver according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling;
when the target response operation is started, charging a coupling capacitor through a preset pre-charging and discharging circuit, judging whether the coupling capacitor is charged, and if yes, enabling the line output driver to be started;
and when the target response operation is forbidden, discharging the coupling capacitor through a preset pre-charge and discharge circuit, judging whether the coupling capacitor is completely discharged, and if so, enabling to close the line output driver.
With reference to the first aspect, in a first implementation manner of the first aspect of the present invention, the charging the coupling capacitor by a preset precharge and discharge circuit includes:
controlling a switch between a preset pre-charge and discharge circuit and output voltage to be in a closed state;
and when the switch is in a closed state, setting the pre-charge and discharge circuit to a charging mode, and charging a preset coupling capacitor.
With reference to the first aspect, in a second implementation manner of the first aspect of the present invention, the determining whether the charging of the coupling capacitor is completed, if yes, enabling to start the line output driver includes:
charging the coupling capacitor to a preset reference potential based on a preset time period as a target;
when the coupling capacitor is charged to a preset reference potential, a switch between the pre-charge and discharge circuit and the output voltage is disconnected, so that the line output driver can be started.
With reference to the first aspect, in a third implementation manner of the first aspect of the present invention, the discharging the coupling capacitor through a preset precharge and discharge circuit includes:
controlling a switch between a preset pre-charge and discharge circuit and output voltage to be in a closed state;
when the switch is in a closed state, the pre-charge and discharge circuit is set to a discharge mode, and a preset coupling capacitor is discharged.
With reference to the first aspect, in a fourth implementation manner of the first aspect of the present invention, the determining whether the discharging of the coupling capacitor is completed, if yes, enabling to close the line output driver includes:
discharging the coupling capacitance to zero based on a preset target time period;
when the coupling capacitance discharges to zero, the switch between the pre-charge discharging circuit and the output voltage is disconnected, so that the line output driver can be closed.
A second aspect of the present invention provides an audio plosive processing apparatus comprising:
the receiving module is used for receiving a target enabling signal through a preset line output driver and generating a target response operation of the line output driver according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling; s is(s)
The charging module is used for charging the coupling capacitor through a preset pre-charging and discharging circuit when the target response operation is started, judging whether the coupling capacitor is charged, and enabling the line output driver to be started if the coupling capacitor is charged;
and the discharging module is used for discharging the coupling capacitor through a preset pre-charging and discharging circuit when the target response operation is forbidden, judging whether the coupling capacitor is completely discharged, and if yes, enabling to close the line output driver.
A third aspect of the present invention provides an audio plosive processing apparatus comprising: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the audio plosive processing device to perform the audio plosive processing method described above.
A fourth aspect of the present invention provides a computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the above-described audio plosive processing method.
In the technical scheme provided by the invention, a target enabling signal is received through a line output driver, and a target response operation of the line output driver is generated according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling; when the target response operation is started, the coupling capacitor is charged through the pre-charge and discharge circuit, whether the coupling capacitor is charged is judged, and if yes, the line output driver is started; when the target response operation is forbidden, discharging the coupling capacitor through the pre-charge and discharge circuit, judging whether the discharging of the coupling capacitor is completed, if yes, enabling the line output driver to be closed, and if the coupling capacitor is pre-charged to the reference potential before starting, reducing pop sound generated by rising step response of the output end of the line output driver; if the coupling capacitor is pre-discharged to zero before the enabling and closing, pop sound generated by the descending step response of the output end of the line output driver can be reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an audio plosive processing method according to an embodiment of the present invention;
FIG. 2 is a flow chart of the enabling of the start-up line output driver in an embodiment of the present invention;
FIG. 3 is a flow chart of discharging the coupling capacitor according to an embodiment of the present invention;
FIG. 4 is a flow chart of the enabling off-line output driver according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an embodiment of an audio plosive processing device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of an embodiment of an audio plosive processing device according to an embodiment of the present invention;
FIG. 7 (1) is a simulation result without the pre-charge/discharge device in the embodiment of the present invention;
FIG. 7 (2) is a simulation result when the pre-charge/discharge device is provided in the embodiment of the present invention;
FIG. 8 is a schematic diagram of an audio Line-out driver with pre-charge and discharge circuit according to an embodiment of the present invention;
FIG. 9 is a timing diagram of charge and discharge when the Line-out driver is enabled on or off in an embodiment of the present invention;
FIG. 10 is a diagram showing a relationship between a charging time t and an output voltage Vout according to an embodiment of the present invention;
fig. 11 is a circuit diagram of a reframp charge and discharge device according to an embodiment of the invention.
Detailed Description
The embodiment of the invention provides an audio plosive processing method, device, equipment and storage medium, which are used for reducing pop sound generated by rising and falling step response of an output end of a Line-out driver. The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
For easy understanding, the following describes a specific flow of an embodiment of the present invention, referring to fig. 1, and one embodiment of an audio plosive processing method in the embodiment of the present invention includes:
s101, receiving a target enabling signal through a preset line output driver, and generating a target response operation of the line output driver according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling;
it is to be understood that the execution body of the present invention may be an audio plosive processing device, and may also be a terminal or a server, which is not limited herein. The embodiment of the invention is described by taking a server as an execution main body as an example.
In particular, the line out driver is a circuit board whose primary function is to receive electrical signals while producing or maintaining a stable electrical signal output that can be used to control other circuit elements or devices or as input signals to other circuits, the preset line out driver being designed to respond to inputs from a target enable signal according to certain rules.
It should be noted that the target enable signal is an input signal for indicating when other circuits or devices are turned on or off. Which is typically a binary signal, indicates that the target circuit or device should be activated when the signal is 1 and that the target circuit or device should be deactivated when the signal is 0. Specifically, in the embodiment of the present invention, first, a target enable signal is input to a preset line output driver, and once the target enable signal is received, the preset line output driver will respond to the signal according to a predetermined rule, and a target response operation is generated by the preset line output driver with respect to the target enable signal. This operation may be to enable or disable other circuits or devices, to modify the output signals of other line drivers, or to otherwise customize the operation in which the intended response operation of the preset line output driver is to be output to other circuit elements or devices.
S102, when a target response operation is started, charging a coupling capacitor through a preset pre-charge and discharge circuit, judging whether the coupling capacitor is charged, and if yes, enabling a line output driver to be started;
specifically, the pre-charge discharging device provided by the invention can charge or discharge the coupling capacitor C to Vmid to 0 in the time T, and as shown in fig. 7 (1), which is a comparison of simulation results of an example designed according to the invention, fig. 7 (1) is a simulation result without the pre-charge discharging device, and fig. 7 (2) is a simulation result with the pre-charge discharging device. Comparison shows that the pop sound of about 1.5V generated by the Line-out driver in the precharge mode when the enable signal pdb is turned on and off can be reduced to within 10mV, wherein the size of the pop sound is measured after passing through an a-weighted filter (a-weighted). The a-weighted filter is used to emphasize frequencies around 1 khz-6 khz of the human ear while attenuating very high and very low frequencies that the human ear is insensitive to, in order to ensure that the measured loudness corresponds well to the perceived loudness of the host.
And S103, when the target response operation is forbidden, discharging the coupling capacitor through a preset pre-charge and discharge circuit, judging whether the discharging of the coupling capacitor is completed, and if yes, enabling to close the line output driver.
It should be noted that, when the target response operation is disabled, the preset pre-charge and discharge circuit will discharge the coupling capacitor, so as to ensure that the capacitor is completely discharged. This prevents residual charges and voltages from interfering with the proper operation of the circuit at the next operation. The precharge and discharge circuit is a circuit design designed for rapidly and accurately discharging a capacitor to a certain level. The precharge and discharge circuit is used to optimize the performance and response time of the line out driver. When a device or function needs to be disabled, the precharge and discharge circuit first discharges the coupling capacitor through a reverse current. When the capacitor is fully discharged, the line out driver will be disabled and stop sending signals to other devices. It should be noted that in some cases, the capacitor needs to be discharged to a certain voltage level, rather than being completely discharged. In this case, the pre-set pre-charge and discharge circuits are adjusted and optimized according to specific capacitor specifications and requirements.
Specifically, as shown in fig. 8, the audio Line-out driver of the present invention is a schematic structural diagram of adding a precharge and discharge circuit, and its function is that when the pdb is enabled (the Line-out driver refers to a circuit or chip for driving audio output, which is typically used to convert digital audio signals into analog audio signals, and can be connected to external audio devices, such as speakers, audio amplifiers, etc.), the output signal of the Line-out driver can be output with very high quality, typically two stereo outputs of left and right channels, the switch between the precharge and discharge circuit reframp and the output Vout is closed (Vout "typically represents the output voltage of the circuit, which represents the voltage level output after passing through the circuit, and can be used to represent the power or efficiency of the circuit under certain conditions, typically, vout designates the output voltage level of the circuit under certain load conditions), the reframp circuit is set to a charge mode, the coupling capacitor (the coupling capacitor can transfer signals (such as audio signals or radio frequency signals) in the circuit to a low-quality output, typically two stereo output channels), and at the same time, the voltage level of the switch can be prevented from being changed by the switch signal is switched to a high level, i.e., the voltage level can be changed by a high voltage level, and the voltage level can be changed by a voltage level of the switch signal is normally, and the switch is turned off by a voltage level of the switch signal (vm) and the voltage can be changed by a reference voltage level; when the pdb is enabled to turn off the Line-out driver, the switch between the precharge circuit reframp and the output Vout is turned on, the reframp circuit is set to a discharge mode to discharge the coupling capacitor, the capacitor is discharged to 0 after the time T is also about elapsed, and the switch sw is turned off, so that the Line-out driver is enabled to be turned off.
In the embodiment of the invention, a target enabling signal is received through a line output driver, and a target response operation of the line output driver is generated according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling; when the target response operation is started, the coupling capacitor is charged through the pre-charge and discharge circuit, whether the coupling capacitor is charged is judged, and if yes, the line output driver is started; when the target response operation is forbidden, discharging the coupling capacitor through the pre-charge and discharge circuit, judging whether the discharging of the coupling capacitor is completed, if yes, enabling the line output driver to be closed, and if the coupling capacitor is pre-charged to the reference potential before starting, reducing pop sound generated by rising step response of the output end of the line output driver; if the coupling capacitor is pre-discharged to zero before the enabling and closing, pop sound generated by the descending step response of the output end of the line output driver can be reduced.
In a specific embodiment, the process of charging the coupling capacitor by the preset pre-charging and discharging circuit in the performing step may specifically include the following steps:
(1) Controlling a switch between a preset pre-charge and discharge circuit and output voltage to be in a closed state;
(2) When the switch is in a closed state, the pre-charge and discharge circuit is set to a charging mode, and a preset coupling capacitor is charged.
Specifically, when the target response operation is started, the preset line output driver simultaneously opens the switch between the pre-charge and discharge circuit and the output voltage, and sets the pre-charge and discharge circuit to a charging mode to charge the coupling capacitor. The main functions of the precharge and discharge circuit are to charge a capacitor to a specific voltage by injecting charge into the capacitor, and to accurately discharge the capacitor by discharging the charge. In this case, a precharge and discharge circuit is used to precharge and discharge the capacitor to ensure accurate response and stability of the capacitor. When the switch between the pre-charge and discharge circuit and the output voltage is in a closed state, the pre-charge and discharge circuit enters a charging mode to start charging the coupling capacitor, which receives current from an external power supply or other circuits, and adjusts the speed and the charge amount of the charge injection capacitor through the control circuit. When the coupling capacitance is charged to a certain amount of electricity, the precharge and discharge circuit will switch to a discharge mode and discharge the charge of the capacitor. At this time, the switch between the precharge and discharge circuit and the line output driver is also turned off to ensure the stability and safety of the line output driver.
As shown in fig. 9, fig. 9 is a timing relationship of charge and discharge when the entire Line-out driver is enabled to be turned on or turned off according to the present invention. Where pdb is an input enable signal of the Line-out driver, a low level indicates turning off the Line-out driver, and a high level indicates turning on the Line-out driver; vout is the output of the Line-out driver. The pdb_delay, pdb_amp, pdb_sw are all intermediate state signals generated from the pdb signal. The pdb_delay is obtained by designing the pdb delay time T through a digital counter, and the time charge-discharge time T is a design requirement. The pdb_amp is used for controlling the enabling of the amplifier AMP, is obtained by pdb signals and pdb_delay logic AND, and enables to open the AMP after charging Vout to Vmid through Ts when the Line-out driver is required to be started; when the Line-out driver is required to be turned off, the turn-off AMP is first enabled and Vout is discharged to 0. The pdb_sw is a switch control signal between the charge-discharge circuit reframp and the output Vout, and is obtained by logically xoring the pdb signal with the pdb_delay. The switch sw is closed when charging and discharging are needed, and the switch sw is opened when charging and discharging are not needed.
In one embodiment, as shown in fig. 2, the executing step determines whether the coupling capacitor is charged, and if yes, the process of enabling the line output driver may specifically include the following steps:
s201, charging a coupling capacitor to a preset reference potential based on a preset target time period;
s202, when the coupling capacitor is charged to a preset reference potential, a switch between the pre-charge and discharge circuit and the output voltage is disconnected, so that the line output driver can be started.
Specifically, the precharge and discharge circuit will start charging the coupling capacitor to a preset reference potential, and when the coupling capacitor is charged to the preset reference potential, the switch between the precharge and discharge circuit and the output voltage will be turned off, and after the switch between the precharge and discharge circuit and the output voltage is turned off, the line output driver will be enabled to respond to the target enable signal. In this case, a preset line output driver is required to respond to the target enable signal according to a specific period of time. The pre-charge and discharge circuit is operative to provide the coupling capacitor with the necessary charge and to charge the capacitor to a predetermined reference potential to ensure accurate capacitor response and stability, and once the coupling capacitor is charged to the predetermined reference potential, the pre-charge and discharge circuit will open the switch with the output voltage to ensure a stable output signal. At the same time, the line output driver will be enabled and respond to the target enable signal to achieve the start or stop of a particular device or function, as shown in FIG. 10, which is a schematic diagram of the relationship between the charging time T and the output voltage Vout, where T0 is the time period defined by the code<n:0>The time required to accumulate from 0 to N is determined by the total charging current i=n×i for time T1 u It is decided that since the charging current i=q/t1=c (Vmid-Vmid 0)/T1, the time period Vout for T1 is the time t1=c (Vmid-Vmid 0)/I required for charging from the voltage Vmid0 to the voltage Vmid. The total time t=t0+t1 required for the Line-out driver output Vout to charge to Vmid voltage.
In a specific embodiment, as shown in fig. 3, the process of performing the step of discharging the coupling capacitor through the preset precharge and discharge circuit may specifically include the following steps:
s301, controlling a switch between a preset pre-charge and discharge circuit and output voltage to be in a closed state;
s302, when the switch is in a closed state, the pre-charge and discharge circuit is set to be in a discharge mode, and a preset coupling capacitor is discharged.
Specifically, the switch between the pre-charge discharging circuit and the output voltage is controlled to be in a closed state, when the switch is in the closed state, the pre-charge discharging circuit is set to be in a discharging mode, the pre-charge coupling capacitor is discharged, the pre-charge discharging circuit is used for discharging the coupling capacitor and judging whether the coupling capacitor is completely discharged, if yes, the line output driver is enabled to be closed, the pre-charge discharging circuit can be used for rapidly and accurately discharging the coupling capacitor according to requirements when specific equipment or functions are disabled, so that stability and reliability of the circuit are ensured, when the switch between the pre-charge discharging circuit and the output voltage is controlled to be in the closed state, the pre-charge discharging circuit is switched to be in a discharging mode, charges are discharged through the internal resistor and the safety circuit to accurately discharge the coupling capacitor, and when the coupling capacitor is discharged to a specific voltage level, the pre-charge discharging circuit is used for judging that the coupling capacitor is completely discharged. After this, the line out driver will be disabled and stop sending signals to other devices.
In one embodiment, as shown in fig. 4, the performing step of determining whether the discharging of the coupling capacitor is completed, if yes, the process of enabling to turn off the line output driver may specifically include the following steps:
s401, discharging the coupling capacitance to zero based on a preset target time period;
s402, when the coupling capacitance discharges to zero, a switch between the pre-charge discharging circuit and the output voltage is opened, and the line output driver is enabled to be closed.
Specifically, the coupling capacitor is discharged to zero, when the coupling capacitor is discharged to zero, the switch between the precharge and discharge circuit and the output voltage is turned off, and after the switch between the precharge and discharge circuit and the line output driver is turned off, the line output driver is disabled and stops transmitting signals to other devices. The purpose of these steps is to ensure that after disabling a particular device or function for a particular period of time, the pre-charge discharge circuit can quickly and accurately discharge the coupling capacitance to zero potential to ensure circuit stability and safety. When the target time period arrives, the preset precharge and discharge circuit will begin discharging the coupling capacitance to discharge the charge and discharge the capacitor to zero potential. In this process, the precharge and discharge circuit will control the rate and end time of the charge to ensure that the coupling capacitance is fully discharged and reaches zero, and when the coupling capacitance is discharged to zero, the switch between the precharge and discharge circuit and the line output driver will be opened. The disconnection of the switch ensures that the circuit is not disturbed by residual charges and ensures the stability and safety of the line output driver.
As shown in fig. 11, fig. 11 is a specific circuit implementation of the reframp charging and discharging apparatus according to the present invention. In this specific circuit embodiment, vmid is the voltage signal to which we need to charge, ib0 and Ib1 are bias current signals generated from the bias generating circuit images, and their generating circuits are not core-class of the present invention, so that the details are not described here, and the circuit operates in the charging mode when the chag signal level in fig. 11 is high. When charging starts, the switch sw is closed, the vrefcap is connected with Vout, when vrefcap=vout=0, the current flowing through the MP0 pipe and the current flowing through the MP1 pipe are equal to Ib0/2, the current flowing through the MP0 pipe is mirrored to MN6 through MN5 pipe, and then mirrored to MP5 provides unit mirrored current I for MP 7-MPn rudders u In this process I u According to the increase of the vrefcap, but the maximum value is not more than Ib0, the total output current of the current rudder passes through MN10, MN11 and MP9 and finally is mirrored to MP12 in the charging process, and the circuit works in the discharging mode when the chag signal level in FIG. 11 is low. When discharging starts, the switch sw is closed, the vrefcap is connected with Vout, when vrefcap=vout=vmid, the current flowing through the MN0 tube and the MN1 tube are equal to Ib1/2, the current flowing through the MN0 tube is mirrored to MP4 through MP3 tube, and then mirrored to MP5 through MN2 and MN3 to provide unit current I for MP 7-MPn current rudders u In this process I u According to the increase of the reduction of the vrefcap, but the maximum value is not more than Ib1, the total output current of the current rudder in the discharging process is mirrored to MN9 through MN10 finally.
The method for processing audio plosive according to the embodiment of the present invention is described above, and the apparatus for processing audio plosive according to the embodiment of the present invention is described below, referring to fig. 5, where an embodiment of the apparatus for processing audio plosive according to the embodiment of the present invention includes:
a receiving module 501, configured to receive a target enable signal through a preset line output driver, and generate a target response operation of the line output driver according to the target enable signal, where the target response operation includes: enabling or disabling;
the charging module 502 is configured to charge the coupling capacitor through a preset precharge and discharge circuit when the target response operation is started, and determine whether the charging of the coupling capacitor is completed, if yes, enable the line output driver to be started;
and the discharging module 503 is configured to discharge the coupling capacitor through a preset precharge and discharge circuit when the target response operation is disabled, and determine whether the discharging of the coupling capacitor is completed, if yes, enable the line output driver to be turned off.
Receiving a target enabling signal through the line output driver through cooperation of the components, and generating a target response operation of the line output driver according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling; when the target response operation is started, the coupling capacitor is charged through the pre-charge and discharge circuit, whether the coupling capacitor is charged is judged, and if yes, the line output driver is started; when the target response operation is forbidden, discharging the coupling capacitor through the pre-charge and discharge circuit, judging whether the discharging of the coupling capacitor is completed, if yes, enabling the line output driver to be closed, and if the coupling capacitor is pre-charged to the reference potential before starting, reducing pop sound generated by rising step response of the output end of the line output driver; if the coupling capacitor is pre-discharged to zero before the enabling and closing, pop sound generated by the descending step response of the output end of the line output driver can be reduced.
The above fig. 5 describes the audio plosive processing device in the embodiment of the present invention in detail from the point of view of modularized functional entities, and the following describes the audio plosive processing device in the embodiment of the present invention in detail from the point of view of hardware processing.
Fig. 6 is a schematic structural diagram of an audio plosive processing device according to an embodiment of the present invention, where the audio plosive processing device 600 may have a relatively large difference due to different configurations or performances, and may include one or more processors (central processing units, CPU) 610 (e.g., one or more processors) and a memory 620, one or more storage media 630 (e.g., one or more mass storage devices) storing application programs 633 or data 632. Wherein the memory 620 and the storage medium 630 may be transitory or persistent storage. The program stored in the storage medium 630 may include one or more modules (not shown), each of which may include a series of instruction operations on the audio plosive processing device 600. Still further, the processor 610 may be configured to communicate with the storage medium 630 to execute a series of instruction operations in the storage medium 630 on the audio plosive processing device 600.
The audio plosive processing device 600 may also include one or more power supplies 640, one or more wired or wireless network interfaces 650, one or more input/output interfaces 660, and/or one or more operating systems 631, such as Windows Serve, mac OS X, unix, linux, freeBSD, and the like. It will be appreciated by those skilled in the art that the audio plosive processing device configuration shown in fig. 6 is not limiting of the audio plosive processing device and may include more or fewer components than shown, or may combine certain components, or may be arranged in a different arrangement of components.
The present invention also provides an audio plosive processing apparatus, including a memory and a processor, in which computer readable instructions are stored, which when executed by the processor, cause the processor to execute the steps of the audio plosive processing method in the above embodiments.
The present invention also provides a computer readable storage medium, which may be a non-volatile computer readable storage medium, or may be a volatile computer readable storage medium, in which instructions are stored which, when executed on a computer, cause the computer to perform the steps of the audio plosive processing method.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random acceS memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An audio plosive processing method, characterized in that the audio plosive processing method comprises:
receiving a target enabling signal through a preset line output driver, and generating a target response operation of the line output driver according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling;
when the target response operation is started, charging a coupling capacitor through a preset pre-charging and discharging circuit, judging whether the coupling capacitor is charged, and if yes, enabling the line output driver to be started;
and when the target response operation is forbidden, discharging the coupling capacitor through a preset pre-charge and discharge circuit, judging whether the coupling capacitor is completely discharged, and if so, enabling to close the line output driver.
2. The audio plosive processing method of claim 1, wherein said charging the coupling capacitor by a preset precharge and discharge circuit comprises:
controlling a switch between a preset pre-charge and discharge circuit and output voltage to be in a closed state;
and when the switch is in a closed state, setting the pre-charge and discharge circuit to a charging mode, and charging a preset coupling capacitor.
3. The method of claim 2, wherein determining whether the coupling capacitor is charged is performed, and if so, enabling the line output driver, comprises:
charging the coupling capacitor to a preset reference potential based on a preset time period as a target;
when the coupling capacitor is charged to a preset reference potential, a switch between the pre-charge and discharge circuit and the output voltage is disconnected, so that the line output driver can be started.
4. The audio plosive processing method of claim 3, wherein said discharging the coupling capacitor by a preset precharge and discharge circuit comprises:
controlling a switch between a preset pre-charge and discharge circuit and output voltage to be in a closed state;
when the switch is in a closed state, the pre-charge and discharge circuit is set to a discharge mode, and a preset coupling capacitor is discharged.
5. The method of claim 4, wherein determining whether the coupling capacitor is discharged is accomplished, and if so, enabling the line output driver to be turned off, comprises:
discharging the coupling capacitance to zero based on a preset target time period;
when the coupling capacitance discharges to zero, the switch between the pre-charge discharging circuit and the output voltage is disconnected, so that the line output driver can be closed.
6. An audio plosive processing device, comprising:
the receiving module is used for receiving a target enabling signal through a preset line output driver and generating a target response operation of the line output driver according to the target enabling signal, wherein the target response operation comprises the following steps: enabling or disabling;
the charging module is used for charging the coupling capacitor through a preset pre-charging and discharging circuit when the target response operation is started, judging whether the coupling capacitor is charged, and enabling the line output driver to be started if the coupling capacitor is charged;
and the discharging module is used for discharging the coupling capacitor through a preset pre-charging and discharging circuit when the target response operation is forbidden, judging whether the coupling capacitor is completely discharged, and if yes, enabling to close the line output driver.
7. The audio plosive processing device of claim 6, wherein the charging module is configured to:
controlling a switch between a preset pre-charge and discharge circuit and output voltage to be in a closed state;
and when the switch is in a closed state, setting the pre-charge and discharge circuit to a charging mode, and charging a preset coupling capacitor.
8. The audio plosive processing device of claim 7, wherein the charging module is further configured to:
charging the coupling capacitor to a preset reference potential based on a preset time period as a target;
when the coupling capacitor is charged to a preset reference potential, a switch between the pre-charge and discharge circuit and the output voltage is disconnected, so that the line output driver can be started.
9. An audio plosive processing device, comprising: a memory and at least one processor, the memory having instructions stored therein;
the at least one processor invoking the instructions in the memory to cause the audio plosive processing device to perform the audio plosive processing method of any of claims 1-5.
10. A computer readable storage medium having instructions stored thereon, which when executed by a processor, implement the audio plosive processing method of any of claims 1-5.
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| CN202310807670.3A CN116567488B (en) | 2023-07-04 | 2023-07-04 | Audio plosive processing method, device, equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201986129U (en) * | 2010-12-23 | 2011-09-21 | 上海智浦欣微电子有限公司 | Switch blasting sound suppression circuit |
| CN109729479A (en) * | 2017-10-31 | 2019-05-07 | 华为技术有限公司 | Audio playing circuit and audio-frequence player device |
| CN216775008U (en) * | 2021-12-31 | 2022-06-17 | 深圳微步信息股份有限公司 | Circuit and terminal equipment for eliminating startup and shutdown POP sound |
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2023
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201986129U (en) * | 2010-12-23 | 2011-09-21 | 上海智浦欣微电子有限公司 | Switch blasting sound suppression circuit |
| CN109729479A (en) * | 2017-10-31 | 2019-05-07 | 华为技术有限公司 | Audio playing circuit and audio-frequence player device |
| CN216775008U (en) * | 2021-12-31 | 2022-06-17 | 深圳微步信息股份有限公司 | Circuit and terminal equipment for eliminating startup and shutdown POP sound |
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