AMPLIFIER WITH ADJUSTMENT OF THE AUTOMATIC SOUND LEVEL
First Claim
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1. A method for adapting the volume gain to be applied by an amplifier to at least one audio signal to be reproduced, according to the desired volume gain selected by a user, including the following steps:
- calculating a standardized total slow sound level from the signal(s) to be reproduced;
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 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 applied volume gain according to the slow volume gain.
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Abstract
The method for adapting the volume gain (GVolume appliqué) to be applied by an amplifier to at least one audio signal (SAudio 1 to SAudio N) to be reproduced, according to the desired volume gain (GVolume désiré) selected by a user includes the following steps:
- calculating a standardized total slow sound level (NSLTN) from the at least one signal (SAudio 1 to SAudio N) to be reproduced;
- calculating a maximum slow volume gain (GVolLentmax) and a minimum slow volume gain (GVolLentmin) as the quotient of the product of the desired volume gain (GVolume désiré) by dividing a maximum slow gain (GLentmax) or respectively a minimum slow gain (GLentMin) by the standardized total slow sound level (NSLTN);
- determining a first minimum out of the desired volume gain (Gvolume désiré) and the maximum slow volume gain (GVolLentmax);
- determining a second minimum out of the desired volume gain (GVolume désiré) multiplied by a maximum volume gain (GmaxVolume) and the minimum slow volume gain (GvolLentMin);
- determining, as a slow volume gain (GVolume Lent), the maximum of the first and second previously determined minima;
- calculating the volume gain applied (GVolume appliqué) according to the slow volume gain (GVolume Lent).
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Citations
10 Claims
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1. A method for adapting the volume gain to be applied by an amplifier to at least one audio signal to be reproduced, according to the desired volume gain selected by a user, including the following steps:
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calculating a standardized total slow sound level from the signal(s) to be reproduced; 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 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 applied volume gain according to the slow volume gain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An amplifier including means for adapting the volume gain to at least one audio signal to be reproduced, according to the desired volume gain selected by a user, including:
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means for calculating a standardized total slow sound level from the signal(s) to be reproduced; means 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; means for determining a first minimum out of the desired volume gain and the maximum slow volume gain; means for determining a second minimum out of the desired volume gain multiplied by a maximum volume gain and the minimum slow volume gain; means for determining, as a slow volume gain, the maximum of the first and second previously determined minima; and means for calculating the volume gain applied according to the slow volume gain.
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Specification