Abstract: The present invention discloses an audio signal processing system, a loudspeaker and an electronics device. The audio signal processing system having a clipping threshold estimator, which receives an input audio signal and outputs at least one clipping threshold; and an audio processing unit, which receives the input audio signal, processes the input audio signal to control the non-linear distortion added to the input audio signal based on the clipping threshold and outputs an output audio signal to a loudspeaker driver, wherein the clipping threshold estimator includes: an extraction unit which extracts a set of features from the input audio signal; and a regression or classification unit which receives the set of features and converts the set of features into the at least one clipping threshold by using a regression or classification processing.

Abstract: The present invention discloses a signal processing device, a signal processing method and a speaker. The signal processing device comprises a multi-band dynamic range controller, wherein the multi-band dynamic range controller receives an audio signal and includes a first band splitting unit and a resonant band adjustment unit; the first band splitting unit is configured to split the audio signal into multiple bands and obtain at least one resonant band therefrom, which has a resonant frequency band signal in a resonant frequency range of the audio signal; and the resonant band adjustment unit is configured to adjust the resonant frequency band signal based at least on a resonant band dynamic range control gain and output an adjusted resonant frequency band signal for combination with other band signals into a compression output signal.

Abstract: The present invention discloses a signal processing device, a signal processing method and a speaker. The signal processing device comprises a multi-band dynamic range controller, wherein the multi-band dynamic range controller receives an audio signal and includes a first band splitting unit and a resonant band adjustment unit; the first band splitting unit is configured to split the audio signal into multiple bands and obtain at least one resonant band therefrom, which has a resonant frequency band signal in a resonant frequency range of the audio signal; and the resonant band adjustment unit is configured to adjust the resonant frequency band signal based at least on a resonant band dynamic range control gain and output an adjusted resonant frequency band signal for combination with other band signals into a compression output signal.

Abstract: An audio processor for generating an audio output signal (Y) with an enhanced spectral component compared to an audio input signal (X). The processor comprises a frequency splitter (FS) for splitting the input (X) into first and second parts (X1, X2) representing different frequency bands. A gain calculator (GC) estimates a level (LY) of the enhanced audio output signal (Y) for a case where the first signal part (X1) is gained by a previous enhancement gain value (LG). A dynamic headroom (HR) available is calculated based on the estimated level (LY). An enhancement gain (G) is then calculated based on the available dynamic headroom (HR), and this enhancement gain G is applied to the first signal part (X1), and finally the enhanced output signal (Y) is generate by combining the enhanced signal part (ESP) and the second signal part (X2). Preferably, the enhancement gain G calculation is updated for each signal sample, thus allowing fast adjustments of the gain G to avoid clipping distortion.