Sökning: "noise aliasing"

Visar resultat 6 - 10 av 15 avhandlingar innehållade orden noise aliasing.

  1. 6. Subband Beamforming for Speech Enhancement within a Motorcycle helmet

    Författare :Per Cornelius; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Beamfroming; Microphone array system;

    Sammanfattning : The increased mobility in society has led to a need for convenient mobile communication in many different type of environments. Environments such as a motorcycle helmet, engine rooms and most industrial sites share a common challenge in that they often offer significant acoustic background noise. LÄS MER

  3. 7. Nonuniform bandpass sampling in radio receivers

    Författare :Yi-Ran Sun; Svante Signell; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computer engineering; Datorteknik;

    Sammanfattning : As an interface between radio receiver front-ends and digital signal processing blocks, sampling devices play a dominant role in digital radio communications. As an interface between radio receiver front-ends and digital signal processing blocks, sampling devices play a dominant role in digital radio communications. LÄS MER

  4. 8. Asymmetric filter banks for mitigation of mismatch errors in high-speed analog-to-digital converters

    Författare :Per Löwenborg; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Analog-to-digital converters (ADCs) are often the most critical components in, e.g., electronics for telecommunications applications, i.e. LÄS MER

  5. 9. On High-Speed Digital-to-Analog Converters and Semi-Digital FIR Filters

    Författare :Mohammad Reza Sadeghifar; J Jacob Wikner; Robert Hägglund; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DAC; RFDAC; SDFIR; FIR; semi-digital FIR filter; digital-to-analog converter; D A converter; data converter; mixed-signal integrated circuits; mixer DAC; IQ modulator; transmitter;

    Sammanfattning : High-speed and high-resolution digital-to-analog converters (DACs) are vital components in all telecommunication systems. Radio-frequency digital-to-analog converter (RFDAC) provides high-speed and high-resolution conversion from digital domain to an analog signal. RFDACs can be employed in direct-conversion radio transmitter architectures. LÄS MER

  7. 10. Filter bank design for digital speech signal processing : methods and applications

    Författare :Jan Mark de Haan; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Adaptive filter theory; Subband filter banks;

    Sammanfattning : Adaptive filter theory is an important subject in the field of signal processing and has numerous applications in speech processing, telecommunications and mechanical engineering. Examples in speech processing include suppression of background noise, echo cancellation and dereverberation (acoustic path equalization). LÄS MER