Audio amplifier details for TV and broadcast radio receivers, and details of amplifiers used in hearing aids. Analysis and synthesis of sound waves, i.e. in speech analysis and synthesis applications, general speech signal processing and representation, and noise cancelling arrangements i.e. using anti-phase sound . Includes general construction details of audio-video equipment I.e. casing, housings and cabinets for e.g. videos, televisions, and other AV equipment etc. Includes e.g. record carrier housings and enclosures for e.g. loudspeakers etc. Includes details of transducers used for audio input and output e.g. loudspeakers, headphones, earpieces, pick-ups and microphones, and associated circuit arrangements through which transducer current flows I.e. for impedance matching etc.
Coverage also includes enclosures for loudspeakers, connectors and leads.
ISSN 1463-7677 Components and Systems for Dynamic AV recording Sample 100Kb General details of audio and video recording and reproduction equipment e.g. tape transports, disc drives, head positioning etc., and also editing, indexing, control and monitoring arrangements, record carrier cases and equipment housings. Dynamic recording using other technologies is covered under the Derwent ITP 'Components and systems for dynamic recording'. See also Derwent ITPs 'Video and Audio Recording and Reproduction' and 'Data Recording and Reproduction Systems'. Includes general details of recording and reproduction equipment, not specifically for AV, e.g. tape transports, disc drives, head positioning etc. The Derwent ITP also covers editing, indexing, control and monitoring arrangements, record carrier cases and equipment housings.