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Lossless Coding of Speech from Microphone Array
Myška, David ; Černocký, Jan (referee) ; Malenovský, Vladimír (advisor)
This bachelor's thesis deals with lossless coding of speech signals from microphone arrays. It describes the methods used in the FLAC reference codec and their variations to increase compression for signals from microphone arrays. The following describes methods for aligning channels for their subsequent processing. At the end of the work the results obtained are compared with the reference codec FLAC.
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Comparison of voice and audio codecs
Lúdik, Michal ; Sysel, Petr (referee) ; Míča, Ivan (advisor)
This thesis deals with description of human hearing, audio and speech codecs, description of objective measure of quality and practical comparison of codecs. Chapter about audio codecs consists of description of lossless codec FLAC and lossy codecs MP3 and Ogg Vorbis. In chapter about speech codecs is description of linear predictive coding and G.729 and OPUS codecs. Evaluation of quality consists of description of segmental signal-to- noise ratio and perceptual evaluation of quality – WSS and PESQ. Last chapter deals with description od practical part of this thesis, that is comparison of memory and time consumption of audio codecs and perceptual evaluation of speech codecs quality.
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Lossless Coding of Speech from Microphone Array
Myška, David ; Černocký, Jan (referee) ; Malenovský, Vladimír (advisor)
This bachelor's thesis deals with lossless coding of speech signals from microphone arrays. It describes the methods used in the FLAC reference codec and their variations to increase compression for signals from microphone arrays. The following describes methods for aligning channels for their subsequent processing. At the end of the work the results obtained are compared with the reference codec FLAC.
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SW processing of audio formats
Chotětický, Martin ; Šimek, Pavel (advisor) ; Vasilenko, Alexandr (referee)
Bachelor thesis has an imminent focus on detailed analysis of audio processing software and their evaluation. The main goal of this work is to compare four most popular programmes used on daily basis in recording studios, which is precisely described in the theoretical part. Secondly, a brief historical development of audio processing software and a detailed list of avaible products on the market are listed. Practical part represents an analysis of convenient product purchase for start-up recording companies. Every single software is evaluaded including its pros and cons.
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Comparison of voice and audio codecs
Lúdik, Michal ; Sysel, Petr (referee) ; Míča, Ivan (advisor)
This thesis deals with description of human hearing, audio and speech codecs, description of objective measure of quality and practical comparison of codecs. Chapter about audio codecs consists of description of lossless codec FLAC and lossy codecs MP3 and Ogg Vorbis. In chapter about speech codecs is description of linear predictive coding and G.729 and OPUS codecs. Evaluation of quality consists of description of segmental signal-to- noise ratio and perceptual evaluation of quality – WSS and PESQ. Last chapter deals with description od practical part of this thesis, that is comparison of memory and time consumption of audio codecs and perceptual evaluation of speech codecs quality.
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