A volume adjusting method for multiple volume curves in a multi-gain mode

Abstract

The present application relates to a kind of volume adjustment methods of multiple volume curves in multiple gain mode, comprising the following steps: S1, audio signal is connected to volume adjustment mechanism, the volume simulator for providing several analog volume schemes is equipped in the volume adjustment mechanism, the number of fixed difference between each level of the volume curve in each analog volume scheme is fixed and the series is fixed;S2, according to the earphone impedance currently accessed, select one of the above volume curve;S3, the gain value of the volume curve selected by the earphone impedance is output by volume adjustment mechanism, so that the selected volume curve is slow-rising volume curve, steep-rising volume curve or original volume curve.The present application is a kind of volume adjustment methods of multiple volume curves in multiple gain mode, different volume curves are used for different earphone impedance, to adapt to the volume adjustment of different impedance earphone, facilitate consumer use.

Description

Technical Field

[0001] This invention relates to the field of audio device volume adjustment technology, and in particular to a volume adjustment method with multiple volume curves in multiple gain modes. Background Technology

[0002] Traditional audio equipment typically uses a single volume curve; even if the equipment has multiple gain levels to adapt to different headphones, the volume curve will still have the same shape. Desktop audio equipment usually uses a knob to adjust the volume. Because headphones have different impedances, their output volume also varies. This means that the same equipment will have different volume knob positions when connected to different headphones. Figure 1 As shown, the volume curve of traditional devices typically has the same volume adjustment steps. When the device is connected to high-impedance headphones, users need to rotate the knob significantly to adjust the volume to the level commonly used with regular headphones. This is inconvenient for users and can easily lead to the bias that the product's maximum volume is too low. Conversely, when the device is connected to low-impedance headphones, the volume is easily too high. Summary of the Invention

[0003] Therefore, it is necessary to provide a volume adjustment method with multiple volume curves in multiple gain modes to address the above problems. Different volume curves are used for different headphone impedances to adapt to the volume adjustment of headphones with different impedances, making it convenient for consumers to use.

[0004] The technical solution is as follows:

[0005] On the one hand, a method for adjusting volume using multiple volume curves in a multi-gain mode is provided, including the following steps:

[0006] S1. The audio signal is connected to the volume adjustment mechanism, which is equipped with a volume simulator for providing several analog volume schemes. The number of levels of the volume curve in each analog volume scheme is fixed and the difference between each level is fixed.

[0007] S2. Select one of the volume curves mentioned above based on the impedance of the currently connected headphones;

[0008] S3. The volume adjustment mechanism outputs a gain value based on the volume curve selected by the headphone impedance, so that the selected volume curve is a gradually increasing volume curve, a steeply increasing volume curve, or the original volume curve.

[0009] The technical solution will be further explained below:

[0010] In one embodiment, the volume simulator includes a DAC.

[0011] In one embodiment, the DAC has 256 volume levels, each step being 0.5 dB.

[0012] In one embodiment, the volume adjustment mechanism further includes a volume IC connected to the DAC, the volume IC being connected between the DAC and the headphones.

[0013] In one embodiment, the volume simulator includes a digital-to-analog module.

[0014] In one embodiment, the volume mechanism further includes a digital audio processor connected to the digital-to-analog module, the digital-to-analog module being disposed between the digital audio processor and the headphones.

[0015] In one embodiment, a toggle switch for switching the selected volume curve is also included.

[0016] In one embodiment, the volume level of the volume curve is set to 120 levels, and the gain output of the gradually increasing volume curve is as follows:

[0017] When the volume level is less than or equal to 20, the volume step is 0.5dB per level;

[0018] When the volume level is greater than 20 and less than or equal to 40, the volume step is 1dB per level.

[0019] When the volume level is greater than 40 and less than or equal to 60, the volume step is 1.5dB per level;

[0020] When the volume level is greater than 60 and less than or equal to 80, the volume step is 2dB per level.

[0021] When the volume level is greater than 80 and less than or equal to 100, each volume step is 2.5dB.

[0022] When the volume level is greater than 100 and less than or equal to 120, each volume level increment is 3dB.

[0023] In one embodiment, the volume level of the volume curve is set to 120 levels, and the gain output of the steeply rising volume curve is as follows:

[0024] When the volume level is less than or equal to 20, the volume step is 3dB per level.

[0025] When the volume level is greater than 20 and less than or equal to 40, the volume step is 2.5dB per level;

[0026] When the volume level is greater than 40 and less than or equal to 60, the volume step is 2dB per level.

[0027] When the volume level is greater than 60 and less than or equal to 80, the volume step is 1.5dB per level;

[0028] When the volume level is greater than 80 and less than or equal to 100, the volume step is 1dB per level.

[0029] When the volume level is greater than 100 and less than or equal to 120, each volume step is 0.5dB.

[0030] The beneficial effects of this invention are:

[0031] Compared with existing technologies, the present invention provides a volume adjustment method with multiple volume curves in multiple gain modes. The audio signal is input to a volume adjustment mechanism, and the conversion and volume adjustment of the audio signal are tested through a volume simulator within the mechanism. Furthermore, the volume simulator provides multiple simulated volume curve schemes, allowing selection of different volume curves based on different headphone impedances. After selecting the corresponding volume curve, the volume adjustment mechanism outputs a gain value based on the selected volume curve according to the headphone impedance, resulting in a gradually increasing volume curve, a steeply increasing volume curve, or the original volume curve. This is advantageous when connecting low-impedance headphones, where the volume tends to be too high, requiring fine-tuning at lower volumes; the gradually increasing curve provides more precise volume increments. Conversely, when connecting high-impedance headphones, the steeply increasing curve allows for quick volume adjustment to a comfortable level, making operation convenient.

[0032] Furthermore, based on the impedance of commonly used headphones, the volume curve can be adjusted and set so that the knob maintains the same volume at least at a certain position. In this way, even if the user changes headphones, the volume output can always remain at the same level without having to adjust the volume knob again, achieving a plug-and-play effect that requires no adjustment and is simple and convenient to operate. Attached Figure Description

[0033] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of a conventional volume curve in the background art in one embodiment;

[0036] Figure 2 This is a schematic diagram of the operation flow of a volume adjustment method with multiple volume curves in a multi-gain mode, as shown in one embodiment.

[0037] Figure 3 This is a schematic diagram of different volume curves in one embodiment;

[0038] Figure 4 This is a schematic diagram illustrating the use of digital volume control within the DAC in one embodiment;

[0039] Figure 5 A schematic diagram illustrating the addition of a digital audio processor for pre-conversion of digital audio signals to analog signals in one embodiment;

[0040] Figure 6 This is a schematic diagram of the volume curve for 120 volume levels output in one embodiment. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," "fourth," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "fixation," and "tightly fitting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] like Figures 2 to 6 As shown, in one embodiment, a method for adjusting volume using multiple volume curves in a multi-gain mode is provided, comprising the following steps:

[0045] S1. The audio signal is connected to the volume adjustment mechanism, which is equipped with a volume simulator for providing several analog volume schemes. The number of levels of the volume curve in each analog volume scheme is fixed and the difference between each level is fixed.

[0046] S2. Select one of the volume curves mentioned above based on the impedance of the currently connected headphones;

[0047] S3. The volume adjustment mechanism outputs a gain value based on the volume curve selected by the headphone impedance, so that the selected volume curve is a gradually increasing volume curve, a steeply increasing volume curve, or the original volume curve.

[0048] In this embodiment, an audio signal is input to a volume control mechanism, and the conversion and volume adjustment of the audio signal are tested using a volume simulator within the mechanism. The volume simulator provides multiple simulated volume curves, allowing selection of different volume curves based on varying headphone impedances. Specifically, a switch allows the user to confirm the impedance of different headphones and select and adjust the appropriate volume curve. After selecting the corresponding volume curve, the volume control mechanism outputs a gain value based on the selected volume curve's impedance, resulting in a gradually increasing volume curve, a steeply increasing volume curve, or the original volume curve. Figure 3 As shown.

[0049] This means that when connecting low-impedance headphones, the volume tends to be too high, requiring fine-tuning at lower volumes. Using a gradual gain curve, such as at level 1 or 2, provides more precise volume increments. Conversely, when connecting high-impedance headphones, a steep gain curve, such as at level 4 or 5, allows for quick volume adjustment to a comfortable level, making operation convenient. Of course, when the headphone impedance is the same as or similar to the original device, the original volume curve, such as level 3 gain, can be used directly, maintaining the original volume adjustment. This allows users to directly adjust the volume according to their existing habits, improving ease of use and user experience.

[0050] Furthermore, based on the impedance of commonly used headphones, the volume curve can be adjusted and set so that the knob maintains the same volume at least at a certain position. In this way, even if the user changes headphones, the volume output can always remain at the same level without having to adjust the volume knob again, achieving a plug-and-play effect that requires no adjustment and is simple and convenient to operate.

[0051] Of course, in addition to this embodiment, an impedance detection module can be added. The impedance detection module can automatically identify the impedance of the connected headphones and thus automatically make the corresponding volume curve selection. Such a design is also within the protection scope of this invention.

[0052] like Figure 4 As shown, in one embodiment, the volume simulator includes a DAC, specifically, the DAC has 256 volume levels, each with a step size of 0.5 dB. Of course, in actual operation, different numbers of volume levels and the value of each step can be selected according to different device requirements; this embodiment does not impose specific limitations.

[0053] In one embodiment, the volume adjustment mechanism further includes a volume IC connected to the DAC, which is connected between the DAC and the headphones. The volume IC adjusts the volume of the analog audio to improve accuracy.

[0054] like Figure 5 As shown, in one embodiment, the volume simulator includes a digital-to-analog converter module. Further, the volume mechanism also includes a digital audio processor connected to the digital-to-analog converter module, with the digital-to-analog converter module disposed between the digital audio processor and the headphones. That is, a digital audio processor is added before the audio digital signal to analog signal conversion to improve processing accuracy.

[0055] like Figure 6 As shown, in one embodiment, the volume level of the volume curve is set to 120 levels, and the gain output of the gradually increasing volume curve is as follows:

[0056] When the volume level is less than or equal to 20, the volume step is 0.5dB per level;

[0057] When the volume level is greater than 20 and less than or equal to 40, the volume step is 1dB per level.

[0058] When the volume level is greater than 40 and less than or equal to 60, the volume step is 1.5dB per level;

[0059] When the volume level is greater than 60 and less than or equal to 80, the volume step is 2dB per level.

[0060] When the volume level is greater than 80 and less than or equal to 100, each volume step is 2.5dB.

[0061] When the volume level is greater than 100 and less than or equal to 120, each volume level increment is 3dB.

[0062] At this time, the output volume curve is as follows: Figure 6 As shown in Series 1. Depending on the different headphone impedances, the gradient curve can also be adjusted by changing the range step size for each level, as shown below. Figure 6 The volume curve shown in series 2.

[0063] like Figure 6As shown, in one embodiment, the volume level of the volume curve is set to 120 levels, and the gain output of the steeply rising volume curve is as follows:

[0064] When the volume level is less than or equal to 20, the volume step is 3dB per level.

[0065] When the volume level is greater than 20 and less than or equal to 40, the volume step is 2.5dB per level;

[0066] When the volume level is greater than 40 and less than or equal to 60, the volume step is 2dB per level.

[0067] When the volume level is greater than 60 and less than or equal to 80, the volume step is 1.5dB per level;

[0068] When the volume level is greater than 80 and less than or equal to 100, the volume step is 1dB per level.

[0069] When the volume level is greater than 100 and less than or equal to 120, each volume step is 0.5dB.

[0070] At this time, the output volume curve is as follows: Figure 6 As shown in Series 3, similarly, the steep rise of the volume curve can be adjusted by changing the range step size of each level according to different headphone impedances.

[0071] Of course, in actual operation, different levels of volume and gain values ​​for each step can be selected according to different device requirements to control the volume step size, thereby making the adjusted curve smoother and improving the user experience.

[0072] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for volume adjustment of a plurality of volume curves in a plurality of gain modes, characterized by, It comprises the following steps: S1, input the audio signal into the volume adjusting mechanism, the volume adjusting mechanism is provided with a volume simulator for providing a plurality of volume curve analog volume schemes, the number of levels in each volume curve analog volume scheme is fixed and the difference between each level is fixed, the volume adjusting mechanism is correspondingly provided with a gain value according to each volume curve analog volume scheme; S2, select one of the volume curve analog volume schemes according to the current input earphone impedance; S3, through the volume adjusting mechanism, the selected volume curve is a slow-rising volume curve, a steep-rising volume curve or an original volume curve according to the corresponding gain value of the selected volume curve analog volume scheme; The number of levels of the volume curve is set to 120 levels, and the gain output of the slow-rising volume curve is as follows: When the volume level is less than or equal to 20, the volume step of each level is 0.5dB; When the volume level is greater than 20 and less than or equal to 40, the volume step of each level is 1dB; When the volume level is greater than 40 and less than or equal to 60, the volume step of each level is 1.5dB; When the volume level is greater than 60 and less than or equal to 80, the volume step of each level is 2dB; When the volume level is greater than 80 and less than or equal to 100, the volume step of each level is 2.5dB; When the volume level is greater than 100 and less than or equal to 120, the volume step of each level is 3dB; The number of levels of the volume curve is set to 120 levels, and the gain output of the steep-rising volume curve is as follows: When the volume level is less than or equal to 20, the volume step of each level is 3dB; When the volume level is greater than 20 and less than or equal to 40, the volume step of each level is 2.5dB; When the volume level is greater than 40 and less than or equal to 60, the volume step of each level is 2dB; When the volume level is greater than 60 and less than or equal to 80, the volume step of each level is 1.5dB; When the volume level is greater than 80 and less than or equal to 100, the volume step of each level is 1dB; When the volume level is greater than 100 and less than or equal to 120, the volume step of each level is 0.5dB.

2. The method of claim 1, wherein, The volume simulator comprises a DAC.

3. The method of claim 2, wherein, The volume level of the DAC is set to 256 levels, and each level steps 0.5dB.

4. The method of claim 2 or 3, wherein, The volume adjusting mechanism further comprises a volume IC connected to the DAC, and the volume IC is connected between the DAC and the earphone.

5. The method of claim 1, wherein, The volume simulator comprises a digital-to-analog module.

6. The method of claim 5, wherein, The volume adjusting mechanism further comprises a digital audio processor connected to the digital-to-analog module, and the digital-to-analog module is arranged between the digital audio processor and the earphone.

7. The method of claim 1, wherein, It also comprises a switching switch for switching and selecting the volume curve.

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