. "8"^^ . . "ANAL\u00DDZA POTLA\u010COV\u00C1N\u00CD AKUSTICK\u00C9HO ECHA A DTD DETEKCE V CHYTR\u00DDCH TELEFONECH"@cs . "ANAL\u00DDZA POTLA\u010COV\u00C1N\u00CD AKUSTICK\u00C9HO ECHA A DTD DETEKCE V CHYTR\u00DDCH TELEFONECH" . "ANAL\u00DDZA POTLA\u010COV\u00C1N\u00CD AKUSTICK\u00C9HO ECHA A DTD DETEKCE V CHYTR\u00DDCH TELEFONECH"@cs . . . "RIV/68407700:21230/12:00196973" . "The article was concerned with the testing of algorithms for acoustic echo suppression and double talk detection in smartphones environment. Acoustic echo with the environmental noise is generally very uncomfortable in the telecommunication and especially in mobile phones. The design of current mobile phones and their usage cause a high level of echo and distortion. Main task was to create a suitable detector DTD, which is an important feature in echo suppression. Detector was analyzed based on the average coherence of speaker and microphone signals with cepstral speech detection in both channels. For this and other purposes was created GUI applications in MATLAB, It enables analysis and testing algorithms. Simulations were performed on newly created speech database, which represent mobile communication. DTD evaluation was carried out as statistically erroneous detection rate in the entire signal and separately as a measure of false detection in critical segments of the signal, which are important for the proper running of AEC."@en . . "S" . . "Humusoft" . "978-80-970519-4-5" . . . . . "Klapuch, Jan" . "122505" . "acoustic echo cancellation; voice detection; coherence; AEC; DTD; VAD; LMS; ERLE"@en . . . "2"^^ . "ANAL\u00DDZA POTLA\u010COV\u00C1N\u00CD AKUSTICK\u00C9HO ECHA A DTD DETEKCE V CHYTR\u00DDCH TELEFONECH" . "21230" . "2012-11-07+01:00"^^ . "Praha" . . "ANALYSIS OF ACOUSTIC ECHO CANCELLATION AND DOUBLE TALK DETECTION IN SMARTPHONE DEVICES"@en . "2"^^ . "\u010Cl\u00E1nek se zab\u00FDv\u00E1 testov\u00E1n\u00EDm algoritm\u016F pro potla\u010Dov\u00E1n\u00ED akustick\u00E9ho echa a detekc\u00ED spole\u010Dn\u00E9 promluvy v prost\u0159ed\u00ED chytr\u00FDch mobiln\u00EDch telefon\u016F. Akustick\u00E9 echo spole\u010Dn\u011B se \u0161umem prost\u0159ed\u00ED p\u0159edstavuje obecn\u011B velmi ne\u017E\u00E1douc\u00ED jev v telekomunikac\u00EDch a zejm\u00E9na v mobiln\u00EDch telefonech. Konstrukce sou\u010Dasn\u00FDch mobiln\u00EDch telefon\u016F a jejich pou\u017Eit\u00ED zp\u016Fsobuje vysokou \u00FArove\u0148 echa i zkreslen\u00ED, \u010D\u00EDm\u017E vznik\u00E1 n\u00E1ro\u010Dn\u011Bj\u0161\u00ED \u00FAloha ne\u017E v p\u0159\u00EDpad\u011B klasick\u00FDch pevn\u00FDch telefonn\u00EDch syst\u00E9m\u016F. Hlavn\u00ED \u00FAlohou bylo p\u0159edev\u0161\u00EDm vytvo\u0159it vhodn\u00FD detektor DTD, jen\u017E je v\u00FDznamn\u00FDm prvkem p\u0159i potla\u010Dov\u00E1n\u00ED echa. Byl analyzov\u00E1n detektor zalo\u017Een\u00FD na pr\u016Fm\u011Brn\u00E9 koherenci sign\u00E1l\u016F reproduktoru a mikrofonu s vyu\u017Eit\u00EDm kepstr\u00E1ln\u00ED detekce \u0159e\u010Di v obou kan\u00E1lech. K tomuto a dal\u0161\u00EDm \u00FA\u010Del\u016Fm byla vytvo\u0159ena GUI aplikace v MATLABu, umo\u017E\u0148uj\u00EDc\u00ED prov\u00E1d\u011Bt anal\u00FDzu a testov\u00E1n\u00ED algoritm\u016F. Simulace byly prov\u00E1d\u011Bny na nov\u011B vytvo\u0159en\u00E9 \u0159e\u010Dov\u00E9 datab\u00E1zi, jen\u017E reprezentovala mobiln\u00ED komunikaci. Vyhodnocen\u00ED DTD bylo prov\u00E1d\u011Bno statisticky jako m\u00EDra chybn\u00E9 detekce v cel\u00E9m sign\u00E1lu a zvl\u00E1\u0161\u0165 jako m\u00EDra chybn\u00E9 detekce v kritick\u00FDch segmentech sign\u00E1lu, kter\u00E1 jsou d\u016Fle\u017Eit\u00E1 pro spr\u00E1vn\u00FD b\u011Bh syst\u00E9mu AEC." . . . . "RIV/68407700:21230/12:00196973!RIV13-MSM-21230___" . "\u010Cl\u00E1nek se zab\u00FDv\u00E1 testov\u00E1n\u00EDm algoritm\u016F pro potla\u010Dov\u00E1n\u00ED akustick\u00E9ho echa a detekc\u00ED spole\u010Dn\u00E9 promluvy v prost\u0159ed\u00ED chytr\u00FDch mobiln\u00EDch telefon\u016F. Akustick\u00E9 echo spole\u010Dn\u011B se \u0161umem prost\u0159ed\u00ED p\u0159edstavuje obecn\u011B velmi ne\u017E\u00E1douc\u00ED jev v telekomunikac\u00EDch a zejm\u00E9na v mobiln\u00EDch telefonech. Konstrukce sou\u010Dasn\u00FDch mobiln\u00EDch telefon\u016F a jejich pou\u017Eit\u00ED zp\u016Fsobuje vysokou \u00FArove\u0148 echa i zkreslen\u00ED, \u010D\u00EDm\u017E vznik\u00E1 n\u00E1ro\u010Dn\u011Bj\u0161\u00ED \u00FAloha ne\u017E v p\u0159\u00EDpad\u011B klasick\u00FDch pevn\u00FDch telefonn\u00EDch syst\u00E9m\u016F. Hlavn\u00ED \u00FAlohou bylo p\u0159edev\u0161\u00EDm vytvo\u0159it vhodn\u00FD detektor DTD, jen\u017E je v\u00FDznamn\u00FDm prvkem p\u0159i potla\u010Dov\u00E1n\u00ED echa. Byl analyzov\u00E1n detektor zalo\u017Een\u00FD na pr\u016Fm\u011Brn\u00E9 koherenci sign\u00E1l\u016F reproduktoru a mikrofonu s vyu\u017Eit\u00EDm kepstr\u00E1ln\u00ED detekce \u0159e\u010Di v obou kan\u00E1lech. K tomuto a dal\u0161\u00EDm \u00FA\u010Del\u016Fm byla vytvo\u0159ena GUI aplikace v MATLABu, umo\u017E\u0148uj\u00EDc\u00ED prov\u00E1d\u011Bt anal\u00FDzu a testov\u00E1n\u00ED algoritm\u016F. Simulace byly prov\u00E1d\u011Bny na nov\u011B vytvo\u0159en\u00E9 \u0159e\u010Dov\u00E9 datab\u00E1zi, jen\u017E reprezentovala mobiln\u00ED komunikaci. Vyhodnocen\u00ED DTD bylo prov\u00E1d\u011Bno statisticky jako m\u00EDra chybn\u00E9 detekce v cel\u00E9m sign\u00E1lu a zvl\u00E1\u0161\u0165 jako m\u00EDra chybn\u00E9 detekce v kritick\u00FDch segmentech sign\u00E1lu, kter\u00E1 jsou d\u016Fle\u017Eit\u00E1 pro spr\u00E1vn\u00FD b\u011Bh syst\u00E9mu AEC."@cs . "Bratislava" . . . "ANALYSIS OF ACOUSTIC ECHO CANCELLATION AND DOUBLE TALK DETECTION IN SMARTPHONE DEVICES"@en . . . "[CBC6BC3FC6FC]" . . . "20th Annual Conference Proceeding's Technical Computing Bratislava 2012" . "Poll\u00E1k, Petr" .