Abstract: The invention relates to a method for objective verification of auditory steady-state responses (ASSR) in the time domain whereby the individual epochs are transformed into the frequency domain. The response can be made free from noise of the asynchronous EEG in the frequency domain; the amplitudes of the spectral lines, which contain only noise, are set at zero, and the spectral lines of the harmonics remain uninfluenced. The altered spectrum is subsequently transformed back into the time domain.

Abstract: The invention relates to statistical testing method for the objective verification of auditory steady-state responses (ASSR) in the frequency domain by using a “q-sample uniform scores test” whereby only the phase angles are used. Phase angles computed by Fourier transformation are used in one embodiment example. In another embodiment example, spectral amplitudes and phase angles are used; however, the phase angles remain unranked while ranks for the spectral amplitudes are still taken into account for the test. In yet another embodiment example, the values of the phase angles and of the spectral amplitudes are used directly (unranked) whereby said values are computed by means of Fourier transformation. The invention relates also to a testing device to carry out the statistical test method.

Abstract: The invention relates to statistical testing method for the objective verification of auditory steady-state responses (ASSR) in the frequency domain by using a “q-sample uniform scores test” whereby only the phase angles are used. Phase angles computed by Fourier transformation are used in one embodiment example. In another embodiment example, spectral amplitudes and phase angles are used; however, the phase angles remain unranked while ranks for the spectral amplitudes are still taken into account for the test. In yet another embodiment example, the values of the phase angles and of the spectral amplitudes are used directly (unranked) whereby said values are computed by means of Fourier transformation. The invention relates also to a testing device to carry out the statistical test method.

Abstract: The invention relates to statistical testing method for the objective verification of auditory steady-state responses (ASSR) in the frequency domain by using a “q-sample uniform scores test” whereby only the phase angles are used. Phase angles computed by Fourier transformation are used in one embodiment example. In another embodiment example, spectral amplitudes and phase angles are used; however, the phase angles remain unranked while ranks for the spectral amplitudes are still taken into account for the test. In yet another embodiment example, the values of the phase angles and of the spectral amplitudes are used directly (unranked) whereby said values are computed by means of Fourier transformation. The invention relates also to a testing device to carry out the statistical test method.

Abstract: The invention relates to a method for objective verification of auditory steady-state responses (ASSR) in the time domain whereby the individual epochs are transformed into the frequency domain. The response can be made free from noise of the asynchronous EEG in the frequency domain; the amplitudes of the spectral lines, which contain only noise, are set at zero, and the spectral lines of the harmonics remain uninfluenced. The altered spectrum is subsequently transformed back into the time domain.

Abstract: The invention relates to a method for hearing screening of newborns by means of click evoked steady-state-potentials (SSR), where a click repetition rate in the range 60/s to 200/s is used, and that for the objective statistical detection of the SSR a Q-Sample Test is applied in the frequency domain, which not only takes into account the phase angle of the fundamental frequency but also the phase angle of the relevant higher harmonics in the calculation of the test value.

Abstract: A method is described for and objective and frequency-specific determination of the audible threshold using an amplitude modulation following response (AMFR), for application in particular with infants and small children. According to the concept of the invention, instead of a single amplitude-modulated carrier, several carriers, preferably 3 or 5 carriers, having a frequency that is offset by a frequency difference &Dgr;F, preferably &Dgr;F=FMod or &Dgr;F=2 FMod, are used as a stimulus, wherein all carriers with the same modulation frequency FMod are modulated with an amplitude swing between 30% and 100%, preferably 100%. In addition, one or several of the amplitude-modulated carriers, which for an odd number of carriers are preferably the carriers located between the outermost carriers, can be frequency-modulated, wherein a frequency swing between 0% and 30%, preferably 20%, is selected.

Abstract: The invention discloses a process for the automatic determination of hearing of newborns and infants, by detecting the auditory brainstem responses (ABRs) or otacoustic emissions (OAEs), by testing in a frequency domain, by applying a predetermined initial acoustic stimulation level to a subject, pre-averaging a predetermined, sufficient, number of sweeps to yield a set of subaverages (SA), calculating a predetermined number, n, of frequency spectra based on the subaverages (SA), applying a q-sample uniform scores test or a q-sample Watson U.sup.2 test to determine phase and/or amplitude differences among the n frequency spectra. The number of frequency spectra, n, is determined by continuously averaging a predetermined number of initial sweeps to provide a predetermined number, m, of subaverages (SA), calculating m frequency spectra based on the m subaverages, and repeatedly applying the q-sample uniform scores test or the q-sample Watson U.sup.