The Future of Audio Reproduction - Technology - Formats - Applications
نویسندگان
چکیده
The introduction of new techniques for audio reproduction such as binaural technology, Wave Field Synthesis and Higher Order Ambisonics is accompanied by a paradigm shift from channel-based to object-based transmission and storage of spatial audio. The separate coding of source signal and source location is not only more efficient considering the number of channels used for reproduction by large loudspeaker arrays, it will also open up new options for a user-controlled soundfield design. The paper describes the technological change from stereophonic to array-based audio reproduction techniques and introduces a new proposal for the coding of spatial properties related to auditory objects.
منابع مشابه
Design of a High Range, High Efficiency Spread Spectrum Transmitter for Audio Communication Applications
This work proposes a direct sequence spread spectrum transmitter with high transmission range and efficiency for audio signals. It is shown that by choosing high process gain for spread spectrum signal the data could reach a range of 55km in the 2.4GHz ISM band. By employing a light modulation scheme, we have a relaxed SNR requirement for having a low bit error rate (BER) which translates to re...
متن کاملPerception and rendering of three-dimensional surround sound
Recent technological trends facilitate threedimensional stereophony. To this day, no internationally agreed standard for three-dimensional sound reproduction exists. Fundamental research is needed to define basic system parameters and ensure compatibility between different formats. Background in spatial audio perception, stereophonic audio reproduction, and automatic channel format conversion i...
متن کامل45o CONGRESO ESPAÑOL DE ACÚSTICA 8o CONGRESO IBÉRICO DE ACÚSTICA EUROPEAN SYMPOSIUM ON SMART CITIES AND ENVIRONMENTAL ACOUSTICS SUBJECTIVE QUALITY ASSESSMENT OF MULTICHANNEL AUDIO QUALITY IN REPRESENTATIVE AUDIOVISUAL GENRES
Advanced HDTV and 3DTV formats are being successfully adopted by the consumer market, having a strong impact in the way that traditional broadcasting contents are displayed to final users. Together with the above advances in video technology, multichannel spatial audio has also experienced a considerable impulse within the audiovisual industry. However, the need for specific production tools an...
متن کاملHigh-definition digital audio in 3-dimensional sound reproduction
The principles of high-definition, S-dimensional digital audio are reviewed as applicable to DVD in terms of PCM and bitstream formats. A case is presented in favour of both extended dynamic range and extended bandwidth and methods of implementation discussed. Lossless compression is also supported together with multi-channel encoding, while aspects relevant to converter parameters and band-lim...
متن کاملUltra high-resolution spatial audio technology for HDTV on DVD
High capacity optical storage and wide band networks facilitate the delivery of ultra high-resolution audio (UHRA). It is proposed that future high-definition television (HDTV) formats should embrace not only enhanced video but also enhanced audio designed for extended bandwidth, bit depth and spatial resolution. Key ideas are summarised including an ultra high-resolution source code format, ef...
متن کامل