Sökning: "Echo Cancellation"

Visar resultat 1 - 5 av 22 uppsatser innehållade orden Echo Cancellation.

  1. 1. Combining Acoustic Echo Cancellation and Voice Activity Detection in Social Robotics

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Anton Fahlgren; [2019]
    Nyckelord :;

    Sammanfattning : This thesis is partly a theoretical introduction to some basic concepts of signal processing such as the Fourier transform, linear time invariant systems and spectral analysis of random signals, both in the continuous and discrete setting. A second part is devoted to theory and applications of echo cancellation and voice activity detection in so called social robotics. LÄS MER

  2. 2. Automatic acoustic tests of conference phones

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Carl Christian Kirchmann; [2017]
    Nyckelord :Acoustics; Digital signal processing; total harmonic distortion; reverberation;

    Sammanfattning : This master thesis was completed at Limes Audio in Umeå. Limes Audio are specialized in speech enhancement software which is mostly used in conference phones. Their software is used to reduce noise, echo cancellation as well as reduction of distortion. LÄS MER

  3. 3. Performance Evaluation of Digital Signa lProcessing Architectures Running an Acoustic Echo Cancellation Software

    Master-uppsats, Umeå universitet/Institutionen för datavetenskap

    Författare :Joel Viklund; [2016]
    Nyckelord :;

    Sammanfattning : TrueVoice is a speech enhancement software by Limes Audio AB. It improves the quality of the speech signal by using methods such as acoustic echo cancellation and noise reduction. The real time signal processing of TrueVoice puts some specic requirements on the hardware, which makes some processors more suitable than others to run the code. LÄS MER

  4. 4. Robust Echo-Cancellation for Simple VoIP-Applications in Embedded Systems

    Master-uppsats, Linköpings universitet/Kommunikationssystem

    Författare :Anton Eriksson; [2015]
    Nyckelord :VoIP; Adaptive Filtering; Signal Processing;

    Sammanfattning : Voice over IP (VoIP) is the group of techniques for delivering voice communications over Internet Protocol (IP) networks. It has mainly served as the possible substitution for regular PSTN over the last decades, but has recently gained an increased interest in various areas such as alarm applications and customer service. LÄS MER

  5. 5. Automatic Performance Certification Tool for Digital Multiroom Sound Systems

    Master-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :Niklas Bäckström; [2015]
    Nyckelord :;

    Sammanfattning : The company Spotify enables hardware companies to produce sound systems that are capable of playing music via Spotify’s music service. The sound systems are then sold to consumers. In order to guarantee a certain level of quality, the products need to be certified, mainly in regards to performance. LÄS MER