Verfahren und Gerät zur Lautstärke- und Verständlichkeitsregelung für einen Lautsprecher

摘要

Selectively compressing the signal supplied to a loudspeaker (200, 695) based upon the volume setting for the sound level to be produced by the loudspeaker (200, 695) improves the intelligibility of human speech produced by a loudspeaker (200, 695) at high volume levels. Compression of the signal to the loudspeaker (200, 695) prevents the loudspeaker (200, 695) from overloading. The level of compression may be adjusted based upon the volume setting. The amplitude of an audio signal (655) sent to a loudspeaker (200, 695) may be increased if below a preselected pivot point (906) and increased if above the pivot point (906). The amount of increase or decrease in the amplitude may be proportional to the difference between the amplitude of the audio signal and the pivot point (906). This difference may also be raised to the power of a shape factor to determine the amount of increase or decrease in the amplitude of the audio signal.