Hearing loss amplification that amplifies speech and noise subsignals differently

A method for fitting a hearing aid, comprising:

• performing a hearing test on a wearer and/or determining wearer preferences for listening to speech and noise;
• generating, based on the hearing test and/or the wearer preferences for listening to speech, and using a speech fitting formula, a set of speech fitting curves;
• generating, based on the hearing test and/or the wearer preferences for listening to noise, and using a noise fitting formula, a set of noise fitting curves;
• and
• providing a hearing aid comprising:
• neural network circuitry configured to implement a neural network trained to separate a speech subsignal and a noise subsignal from an input audio signal;
• and
• digital processing circuitry comprising:
• a speech wide-dynamic range compression (WDRC) pipeline configured to perform WDRC on the speech subsignal, the speech WDRC pipeline comprising:
• a set of speech subsignal level estimation circuitry configured to determine levels of the speech subsignal;
• and
• a set of speech subsignal amplification circuitry configured to apply the set of speech fitting curves to the speech subsignal based at least in part on the levels of the speech subsignal;
• and
• a noise WDRC pipeline configured to perform WDRC on the noise subsignal, the noise WDRC pipeline comprising:
• a set of noise subsignal level estimation circuitry configured to determine levels of the noise subsignal;
• and
• a set of noise subsignal amplification circuitry configured to apply the set of noise fitting curves to the noise subsignal based at least in part on the levels of the noise subsignal;
• wherein:
• the speech fitting formula is different from the noise fitting formula;
• and
• the set of speech fitting curves is different from the set of noise fitting curves.