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Volume control rates

A volume controller, volume technology, applied in gain control, amplification control, artificial gain control and other directions, can solve problems such as low sensitivity

Inactive Publication Date: 2016-02-10
HARMAN INT IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The human ear is less sensitive to changes in the volume of quiet sounds than to changes at higher volumes

Method used

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Embodiment Construction

[0013] As required, detailed embodiments of the invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention which may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0014] To account for the non-linear characteristics of the human ear, volume controls in audio systems can be designed to provide logarithmic control over volume levels. Although a logarithmic volume control may be an improvement over a linear tapered volume control, a user of an audio system may desire a more volume sensitive control in certain volume ranges than others. Furthermore, users ...

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Abstract

A volume controller may maintain a volume mapping including a plurality of zones of volume level, each zone defined according to a range of included volume levels and specifying a volume ramp up control rate and a volume ramp down control rate for adjustment of volume levels within the range, determine, according to the volume mapping based on a current volume level and a direction of a requested volume change, a step value for adjusting the current volume level, and adjust the current volume level according to the step value.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 61 / 847,898, filed July 18, 2013, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] Aspects as disclosed herein generally relate to a piecewise linear method of volume control rates for volume ramps up and down. Background technique [0004] Human perception of sound is not linear with respect to sound pressure level. Also, human perception of changes in loudness is not linear. The human ear is less sensitive to changes in volume of quiet sounds than to changes at higher volumes. Contents of the invention [0005] In a first illustrative embodiment, a system includes a fader configured to maintain a volume map including a plurality of volume level zones. Each zone may be defined according to a range of volume levels included, and may specify a volume ramp-up control rate and a volume ramp...

Claims

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Application Information

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IPC IPC(8): H03G3/20H04R3/00
CPCH04R3/00H04R2430/01H03G3/02H03G3/3026H03G7/004
Inventor S.K.帕塔S.S.彭
Owner HARMAN INT IND INC