Apparatus and method of automatically compensating an audio volume in response to channel change
First Claim
Patent Images
1. A method of automatically compensating audio volume, the method comprising:
- generating a gain value to adjust a level of a current input audio signal by comparing a global value, which is based on consecutive average levels of the current input audio signal and at least one previous input audio signal in a predetermined range, with a predetermined input/output level curve;
adjusting an audio volume of the input audio signal by applying the generated gain value to the level of the input audio signal; and
adjusting a dynamic range of the input audio signal having the adjusted audio volume.
2 Assignments
0 Petitions
Accused Products
Abstract
An apparatus and method of automatically compensating audio volume in response to a channel change. The method includes generating a gain value to adjust a level of an input audio signal by comparing an average level of the input audio signal with a predetermined input/output level curve, adjusting an audio volume of the input audio signal by applying the generated gain value to the level of the input audio signal, and adjusting a dynamic range of the audio signal having the adjusted audio volume.
-
Citations
24 Claims
-
1. A method of automatically compensating audio volume, the method comprising:
-
generating a gain value to adjust a level of a current input audio signal by comparing a global value, which is based on consecutive average levels of the current input audio signal and at least one previous input audio signal in a predetermined range, with a predetermined input/output level curve; adjusting an audio volume of the input audio signal by applying the generated gain value to the level of the input audio signal; and adjusting a dynamic range of the input audio signal having the adjusted audio volume. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of controlling an audio volume, comprising:
-
adjusting a volume level and a dynamic range of an input audio signal according to a global gain value and a final gain value of the input audio signal so that an audio volume of an output audio signal corresponding to the input audio signal is maintained constant regardless of a channel change, wherein the adjusting of the dynamic range of the audio signal includes measuring an average envelope value of the input audio signal in a predetermined range, comparing the average envelope value with a static level curve to generate a gain level value, and calculating the final gain value according to the gain level value and a previous gain level value of the input audio signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. An apparatus to control an audio volume, comprising:
-
an audio volume compensator to adjust a volume level and a dynamic range of an input audio signal according to a global gain value and a final gain value of the input audio signal so that an audio volume of an output audio signal corresponding to the input audio signal is maintained constant regardless of a channel change, wherein the audio volume compensator adjusts the volume level and the dynamic range of the input audio signal by adjusting the volume level to an intermediate volume when a channel is changed having one of a high volume and a low volume, and adjusting the dynamic range according to a dynamic range control process. - View Dependent Claims (21, 22, 23, 24)
-
Specification