FIELD: physics.
SUBSTANCE: entertainment programme sound recording is processed in response to one or more control effects: the signal level of the sound recording is changed in each of the plurality of frequency bands according to the gain characteristic which associates the signal level of the band to the gain. Further, a control signal is generated for measuring the gain characteristic in each frequency band: time intervals of the entertainment programme sound recording are determined in one wide frequency band (a) as speech or non-speech, or (b) as probably speech or non-speech; a speech level ripple value is obtained in each of the plurality of frequency bands; the minimum level of the sound recording is tracked in each of the plurality of the frequency bands, wherein the tracking response time reacts to the speech level ripple value; the tracked minimum values in each band are converted in accordance with an adaptive threshold level, and each corresponding adaptive threshold level is shifted based on the determination value to generate a control signal for each frequency band.
EFFECT: clearer and more intelligible speech, such as the sound recording of dialogues and narrative statements.
30 cl, 7 dwg
