| 摘要 |
PROBLEM TO BE SOLVED: To provide a peak detection method and system when adapting a signal gain based on signal loudness.SOLUTION: Various embodiments relate to a system for adapting a signal gain, which comprises a peak detector (36) configured to receive an audio input signal (18) containing consecutive signal blocks and to dynamically establish a current input signal level of the audio input signal (18), and a loudness determination unit (31) configured to dynamically determine a perceived loudness of a current signal block of the audio input signal (18) on the basis of a psycho-acoustic model of a human hearing. Furthermore, the system comprises a time constant generation unit (32) configured to determine a time constant on the basis of the perceived loudness of the current signal block and the perceived loudness of a preceding signal block, wherein the time constant describing a change of the signal gain. A gain determination unit (35) is configured to determine the signal gain for the current signal block on the basis of the time constant and the current input signal level. |
