The ability of three species of birds to discriminate among selected harmonic complexes with fundamental frequencies varying from 50 to 1000 Hz was examined in behavioral experiments. The stimuli were synthetic harmonic complexes with waveform shapes altered by component phase selection, holding spectral and intensive information constant. Birds were able to discriminate between waveforms with ...

Over a period of 24 hours, fusion thresholds (click durations 100 micros) were assessed in 7 subjects. Over the same period, order thresholds (click duration of 1 ms) were measured in 10 subjects (12 independent sessions). Auditory fusion thresholds showed a diurnal rhythm with a maximum performance (shortest intervals) around midnight. In contrast, order thresholds appear to be independent on ...

Sensory systems function most efficiently when processing natural stimuli, such as vocalizations, and it is thought that this reflects evolutionary adaptation. Among the best-described examples of evolutionary adaptation in the auditory system are the frequent matches between spectral tuning in both the peripheral and central auditory systems of anurans (frogs and toads) and the frequency spect...

It has been hypothesized that poor auditory temporal resolution is related to language-learning problems in children as well as problems with speech perception in noise in the elderly. We show that the presence of occasional silent gaps between short tone pips elicits mismatch negativity (MMN) in young adults. We also measured gap-detection thresholds with MMN that agree well with behavioural t...

In this study we introduce new methods to design and realize computationally efficient models for musical instrument bodies. The methods take into account the time-frequency resolution of the human auditory system. First we present a method where the body response (or the low-frequency-part of it) is represented as a single digital filter structure which is known as a Kautz filter. Secondly we ...

Temporal, spectral, and combined temporal-spectral resolution of hearing was assessed by recording masked hearing thresholds. The masker was an octave band noise. Spectral resolution was assessed by introducing a spectral gap of half an octave bandwidth in the masker. A 50-msec gap assessed temporal resolution. The spectral and temporal gaps were used separately or simultaneously. Normal-hearin...

In this contribution, we present a non-intrusive assessment technique that aims to reproduce some human perceptual mechanisms. We model a set of perceptually relevant features extracted after an auditory transform of clean speech. This internal source-model is used to characterize any occurring distortions. Preliminary results are given to illustrate the characterization of distortions by some ...

Background and Aim: Foundations and mechanisms of auditory scene analysis (ASA) including segregation and integration were especially reviewed in the study. I focused on the related studies using event-related potentials (ERPs). Recent Findings: Publications on ASA using ERPs from 1971 to 2014 indicate neural mechanisms of ASA in central auditory system. Conclusion: ASA results in recognition o...

Cortical representation of time-varying features of acoustic signals is a fundamental issue of acoustic processing remaining unresolved. The rat is a widely used animal model for auditory cortical processing. Though some electrophysiological studies have investigated the neural responses to temporal repetitive sounds in the auditory cortex (AC) of rats, most of them were conducted under anesthe...

It is currently impossible to mechanically measure the overall vibration pattern of the intact mammalian cochlea because of its inaccessibility and vulnerability. At first sight, data from the auditory nerve are a poor substitute because of their limited temporal resolution. The nonlinear character of neural coding, however, causes low-frequency interactions among the components of multitone st...