Sökning: "Speech Transmission Index"

Hittade 3 avhandlingar innehållade orden Speech Transmission Index.

  1. 1. Disruption of writing in noisy office environments

    Författare :Marijke Keus van de Poll; Patrik Sörqvist; Stefan Wiens; Högskolan i Gävle; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; background speech; writing; speech intelligibility; Speech Transmission Index; masking; sound source location; working memory capacity; inattention; noise sensitivity; task interruptions; bakgrundsprat; skriva; taluppfattbarhet; Speech Transmission Index; maskering; ljudposition; arbetsminneskapacitet; uppmärksamhet; ljudkänslighet; uppgiftsavbrott; inget Strategiskt forskningsområde SFO ; no Strategic Research Area SFO ;

    Sammanfattning : The overall aim of the four experimental studies included in this dissertation was to investigate the influence of background speech on writing performance. In Paper I, a manipulation of speech intelligibility of background speech, by using the Speech Transmission Index (STI), revealed disruptive effects at lower STI values (i.e. LÄS MER

  3. 2. On Soft Decoding and Robust Vector Quantization

    Författare :Mikael Skoglund; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; speech and image coding; intersymbol interference; Rayleigh fading; soft decoding; CDMA; index assignment; Hadamard transform; channel optimized VQ; robust VQ; combined source-channel coding; vector quantization VQ ; noisy channels;

    Sammanfattning : This thesis considers vector quantization for noisy channels. Vector quantization (VQ) is an important technique for block-based source coding, with applications in, e.g., speech and image coding. LÄS MER

  4. 3. Cognitive performance and restoration in open-plan office noise

    Författare :Helena Jahncke; Mats Nilsson; Staffan Hygge; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Teknisk psykologi; Engineering Psychology;

    Sammanfattning : This dissertation presents four experimental studies (in four papers) with the overall aim to investigate the effects of office noise on cognitive performance and restoration. In the first two papers the focus was on the effects of different sound levels (i.e. LÄS MER