The method used in our laboratory is a scientific method. This is the hypothetico-deductive method used in experimental sciences (life sciences, physics, chemistry, earth sciences, etc.). The discipline using this method to study auditory perception is called psychoacoustics (i.e., auditory psychophysics) following the work of Hermann von Helmholtz, one of the pioneers of the field who attempted to apply the scientific approach to the study of the laws and physiological mechanisms associating acoustic signals with auditory experiences of pitch, loudness, timbre, etc. Today, modern psychoacoustics aim to characterize the architecture of the processing of auditory information evoked by acoustic signals by associating each mechanism with its biological substratum (the outer ear, the middle ear, the cochlea, the auditory nerve , the brainstem, the auditory cortex, other brain structures) through biophysics, neurophysiology and brain-imaging techniques. This research program has developed many tools (psychophysical methods for threshold measurement, signal detection theory, ideal observer analysis). It aims to model quantitatively (mathematically) and simulate (via computers) this processing of auditory information to predict auditory behavior and lead to various applications in the field of acoustic engineering (e.g., architectural acoustics), the processing of audio and speech signal (eg, automatic speech recognition software) or the biomedical field (e.g., screening of hearing loss, hearing aids, cochlear implants, brainstem implants, etc.).