Vocal effort is a physiological magnitude that accounts for the changes in voice production that occur as vocal loading, which is the stress inflicted on the vocal folds when speaking for long periods, increases. It has been quantified in terms of Sound Pressure Level (SPL). In previous research, it has been shown that prolonged vocal effort can lead to vocal fatigue. An experiment was conducte...

The most common cause of reduced diffusion of the acoustical field is extensive sound absorbing applied to the ceiling and the floor, and contrarily walls reflect sound well and they are vertical and poorly subdivided. In such rooms, sound waves propagating in directions close to horizontal attenuate slowly form a horizontal reverberant field. The reverberation time appears to exceed the value ...

The significant characteristics of the electromagnetic environment in an ideal reverberation chamber are uniformity, isotropy and random polarization. Stirrer performance in a reverberation chamber is crucial to these characteristics. In this paper, based on the statistical theory, the uncertainty due to the number of independent samples is given. The key mechanism that causes the fields in a r...

We describe a binaural auditory model for speech recognition, which is robust in the presence of reverberation and spatially separated noise intrusions. The principle underlying the model is to identify time-frequency regions which constitute reliable evidence of the speech signal. This is achieved both by determining the spatial location of the speech source, and by applying a simple model of ...

Three experiments explored the resistance to simulated reverberation of various cues for selective attention. Listeners decided which of two simultaneous target words belonged to an attended rather than to a simultaneous unattended sentence. Attended and unattended sentences were spatially separated using interaural time differences (ITDs) of 0, +/-45, +/-91 or +/-181 micros. Experiment 1 used ...

The goal of this paper is to compare the results of reverberation time measurements obtained with different well-established methods used for this type of measurements, as well as some additional ones which could serve as in situ tool when standard methods are not available. The methods compared in this paper include integrated impulse response measured with pink noise, exponential sweep and ML...

Two significant spaces define the soundscape of worship in a church: chancel and nave. The is space with primary function sound source, where preachers choir are often seated during church services. Church design layout have changed throughout history based on functional needs its target congregation. Some modern churches omitted to fit contemporary aesthetics. main aim this study investigate r...