Vector quantisation (VQ) is a method widely used in low bit-rate coding and transmission of speech signals. Unfortunately, a single bit error in the transmitted index, due to noise in the transmission channel, could degrade perceived speech quality at the receiver quite dramatically, as the reference vector retrieved by the corrupted index may di er greatly from the vector corresponding to the ...

Wideband speech codecs usually provide better perceptual speech quality than their narrowband counterparts, but they still degrade quality compared to an uncoded transmission path. In order to quantify these degradations, a new methodology is presented which derives a one-dimensional quality index on the basis of instrumental measurements. This index can be used to rank different wideband speec...

OBJECTIVE To present a multi-centre study that analyses the socioeconomic, cultural and political contexts that give rise to population mobility, and its relationship to vulnerability to sexually transmitted infections (STI)/HIV/AIDS, in order to provide information that can be used to design appropriate and focused interventions. METHODS In each of 11 transit stations (border towns, port cit...

Abstract Mungbean is of the important legume commodity in Indonesia, however production still encountering abiotic salinity stress. Fifty mungbean accessions were evaluated for tolerance at Indonesian Legumes and Tuber Crops Research Institute (ILETRI). The experimental was arranged Split Plot Design consisted two factors three replications. main plot environments, normal stress that applied us...

The paper presents the latest research results concerning correlation between changes in room acoustics of school spaces and noticeable communication functioning students teachers at school. The primary covered by is second largest this type Poland. large number hard interior finishing made acoustic conditions building very unfavourable. measurements showed that rooms were noisy reverberant....

Storaging or transmission of speech signals at very low bit rate is a hot area in the field of speech processing. We used stochastic inter-frame interpolators and vector quantization (VQ) as a new method for developing a high quality 1200 BPS speech vocoder. The objective and subjecgtive test results show that performance of the new vocoder is compairable with 4800 BPS standard vocoders (as CELP).

OBJECTIVES The objective was to describe the prevalence of sexually transmitted infections (STI) and blood-borne viruses (BBV), and prophylactic treatment offered to female postpubertal patients attending a Norwegian Sexual Assault Centre (SAC). We wanted to evaluate whether STIs diagnosed at the initial visit could have been assault-transmitted, and to explore whether background and assault ch...

BACKGROUND Partner notification (PN) is the process whereby sexual partners of an index patient are informed of their exposure to a sexually transmitted infection (STI) and the need to obtain treatment. For the person (index patient) with a curable STI, PN aims to eradicate infection and prevent re-infection. For sexual partners, PN aims to identify and treat undiagnosed STIs. At the level of s...

Storaging or transmission of speech signals at very low bit rate is a hot area in the field of speech processing. We used stochastic inter-frame interpolators and vector quantization (VQ) as a new method for developing a high quality 1200 BPS speech vocoder. The objective and subjecgtive test results show that performance of the new vocoder is compairable with 4800 BPS standard vocoders (as CELP).

The potential for exposure of low and high risk women to HIV and sexually transmitted infections (STI) through unprotected sex with male clients of female sex workers in Cotonou could account for most if not all of the estimated yearly numbers of HIV infections in Cotonou women (approximately 1000). As ongoing transmission of HIV, and also of the most predominant STIs such as gonorrhoea and HSV...