Geomagnetic indices are basic data in Solar-Terrestrial physics, and for operational Space Weather activities. The International Service of Geomagnetic Indices (ISGI) is in charge of the derivation and dissemination of geomagnetic indices that are acknowledged by the International Association of Geomagnetism and Aeronomy (IAGA, an IUGG association). Institutes which are not part of ISGI started...

The speech quality in modern wireless networks has been traditionally measured by metrics which are derived from radio link measurements. The indirect measurement of speech quality based on such metrics is unreliable and often precious network resources are sacrificed to make up for this. In this paper, a perceptual metric is considered for direct measurement of speech quality and the framework...

This paper investigates the measure of voice quality for a digital speech watermarking scheme using a subjectivity method. Data rate, inaudibility, and robustness are considered more than voice quality in speech watermarking. Since any technique in speech telecommunication should have acceptable quality, the perceptual measurement of voice quality is seen as an important topic in audio and spee...

From a user’s perspective, the speech quality of modern telecommunication systems often differs from that of traditional wireline telephone systems. One aspect is a changed sound of the interlocutor’s voice – introduced by an expansion of the transmissionbandwidth to wide-band, by low-bitrate coding and/or by the acoustic properties of specific user-interfaces. In order to quantify the effect o...

The current issue of the Iranian Rehabilitation Journal contains original research evaluating the efficacy of addiction rehabilitation an evaluation of a child rehabilitation system for community based research, reading program for children with down syndrome, auditory stream segregation in auditory processing disorder, speech and language disorders, quality of life of adolescents with hearing ...