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Central and Eastern European Survey
Research
Speech processing group
SH Trading B.V.M
Research Activities pursued at the organisation
1. Algorithm of acoustic signals compression with a selected relation: a degree of a compression / quality of restoring. Sampling rate and degree of a compression can be governed. The average output stream for want of to sampling rate 8 kHz and high quality of a restored speech signal makes 48 kbps. Is economic for want of weak signals and pauses. Can be applied for a compression of speech and other acoustic signals for various assigning. 2. Algorithm of a speech signals compression in a stream no more than 1.5 kbps. Ensures an intelligibility and naturalibility of restored speech signal. Can be used for the digitized speech transmission on band-limited data link channel. 3. Speech rate modification algorithm without an essential modification of parameters of basic tone and formants. Can be used for accelerated listening of long entries. 4. Algorithm of clearing of speech from a mixture with noise. Allows to improve an intelligibility for want of initial relation a signal / noise up to - 5 dB. 5. System with the computer, DSP board and software for a multichannel acoustic signals recording on the hard disk. Simultaneously it is possible to record up to 32 channels, each of which can be set-up individually. For want of to set-up sampling rate (616 kHz), degree of a compression and other parameters is selected. Works under Windows'95. Has the advanced and convenient interface of control. Is delivered by the order.
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