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Abstract: I de nordiske lande er ca. 5 millioner mennesker udsat for vejtrafikstøj. I Danmark, Sverige, Norge og Finland findes i varierende form nationale ambitioner om at reducere vejtrafikstøj ved eksisterende boliger. Trods de nationale ambitioner har der hidtil været store vanskeligheder med at realisere dem. Kommunernes prioriteringer er en funktion af tre forhold: Den kommunale organisation, kommunens nære omgivelser, samt staten og tværgående netværk. På baggrund af case-studier, teori og anden litteratur tegnes i rapporten tegnes i rapporten billedet af det vi kalder den kommunale støjpolitiske anatomi. Det generelle billede er, at kommunerne har gode grunde til ikke at beskæftige sig med vejtrafikstøj ved eksisterende boliger. To case-studier fra Hørsholm i Danmark og Stockholm i Sverige er imidlertid eksempler på kommuner som gør en ekstraordinær indsats. På den baggrund redegøres for en række forudsætninger, som er vigtige for at øge den kommunale indsats for reduktion af vejtrafikstøj ved eksisterende boliger.

Noise.

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Workable methods for protecting wire-line communication circuits entering electric supply locations are presented. This document covers: the electric supply location environment; protection apparatus; service types, reliability, service performance objective classifications, and transmission considerations; protection theory and philosophy; protection configurations; installation and inspection; and safety.

Electric noise.

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Mineral industries --- Noise.

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Tire/pavement noise. --- Traffic noise --- Pavements --- Prevention. --- Design and construction.

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Network operators are faced with the challenge of maximizing the quality of voice transmissions in wireless communications without impairing speech or data transmission. This book, first published in 2006, provides a comprehensive survey of voice quality algorithms, features, interactions and trade-offs at the device and system levels. The book elaborates on the root cause of impairments and ways for resolving them, as well as methodologies for measuring and quantifying voice quality before and after applying the remedies. A 'troubleshooting and case studies' chapter provides a useful approach to identifying and solving network impairments. Avoiding complex mathematics, the approach is based on real and sizable field experience supported by scientific and laboratory analysis. This title is suitable for practitioners in the wireless communications industry and graduate students in electrical engineering. Further resources, including a range of audio examples, are available online at www.cambridge.org/ 9781107407183.

Vocoder. --- Speech processing systems --- Wireless communication systems. --- Noise control. --- Noise.