Amplifier with adjustment of the automatic sound level
First Claim
1. A method for producing a volume gain to be applied by an amplifier to at east one audio signal, according to a desired volume gain selected by a user, comprising:
- calculating a standardized total slow sound level from the at least one audio signal;
calculating a maximum slow volume gain and a minimum slow volume gain as the quotient of the product of the desired volume gain by a maximum slow gain, respectively by a minimum slow gain, divided by the standardized total slow sound level;
determining a first minimum volume gain out of the desired volume gain and the maximum slow volume gain;
determining a second minimum volume gain out of the desired volume gain multiplied by a maximum volume gain and the minimum slow volume gain;
determining, as a slow volume gain, the maximum of the first and second determined minimum volume gains; and
calculating the volume gain according to the slow volume gain,wherein the method is implemented by a volume management unit together with a device for producing the volume gain, wherein the desired volume gain is obtained from a control member, and wherein the volume gain is applied to the amplifier for its control.
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Accused Products
Abstract
A method is provided for producing a volume gain applied by an amplifier to at least one audio signal according to a desired volume gain selected by a user, which includes calculating a standardized total slow sound level from at least one audio signal, calculating maximum slow volume gain and minimum slow volume gain as the quotient of the product of the desired volume gain by maximum slow gain, respectively by minimum slow gain, divided by the standardized total slow sound level, determining a first minimum out of the desired volume gain and the maximum slow volume gain, determining a second minimum out of the desired volume gain multiplied by a maximum volume gain and the minimum slow volume gain, determining as a slow volume gain the maximum of the first and second previously determined minima, and calculating the volume gain according to the slow volume gain.
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Citations
11 Claims
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1. A method for producing a volume gain to be applied by an amplifier to at east one audio signal, according to a desired volume gain selected by a user, comprising:
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calculating a standardized total slow sound level from the at least one audio signal; calculating a maximum slow volume gain and a minimum slow volume gain as the quotient of the product of the desired volume gain by a maximum slow gain, respectively by a minimum slow gain, divided by the standardized total slow sound level; determining a first minimum volume gain out of the desired volume gain and the maximum slow volume gain; determining a second minimum volume gain out of the desired volume gain multiplied by a maximum volume gain and the minimum slow volume gain; determining, as a slow volume gain, the maximum of the first and second determined minimum volume gains; and calculating the volume gain according to the slow volume gain, wherein the method is implemented by a volume management unit together with a device for producing the volume gain, wherein the desired volume gain is obtained from a control member, and wherein the volume gain is applied to the amplifier for its control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
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10. An amplifier for producing a volume gain to at least one audio signal, according to a desired volume gain selected by a user, comprising:
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a calculator for calculating a standardized total slow sound level from the-at least one audio signal; a calculator for calculating a maximum slow volume gain and a minimum slow volume gain as the quotient of the product of the desired volume gain by a maximum slow gain, respectively by a minimum slow gain divided by the standardized total slow sound level; a device for determining a first minimum volume gain out of the desired volume gain and the maximum slow volume gain; a device for determining a second minimum volume gain out of the desired volume gain multiplied by a maximum volume gain and the minimum slow volume gain; a device for determining, as a slow volume gain, the maximum of the first and second determined minimum volume gains; and a calculator for calculating the volume gain according to the slow volume gain.
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Specification