ViMiC (Virtual Microphone Control) is a new toolbox for real-time synthesis of spatial sounds, particularly for concert situations and sound installations, and especially for larger or non-centralized audiences. Based on the concept of virtual microphones positioned within a virtual 3D room, ViMiC supports loudspeaker reproduction up to 24 discrete loudspeaker channels whereby the loudspeakers ...

Loudspeaker equalization is an essential technique in audio system design. A well-known equalization scheme is based on the deconvolution of the desired equalized response with the measured impulse response of the loudspeaker. In this paper, a postprocessing scheme is combined with the deconvolution-based algorithm to provide a better equalization effect. Computer simulation results are given t...

In many sound reproduction applications it is not possible to use large loudspeakers because of size or cost constraints. Typical applications are portable audio, multimedia, TV, and public address systems, to name just a few. Hence the devices are often small in size, and therefore the transducers are inherently small as well. Needless to say, the competitive market just mentioned also dictate...

Wave Field Synthesis (WFS) is a sound reproduction technique using loudspeaker arrays that postpones the limits set by conventional techniques (stereo, 5.1 ...). These techniques rely on stereophonic principles allowing the creation of an acoustical illusion (as opposed to an optical illusion) over a very small area in the center of the loudspeaker setup, generally referred to as “sweet spot”. ...

The main difference in topology of a boost bridgeamplifier and state-of-the-art class-D amplifier is in theconnection of a loudspeaker between a power supply and aswitching bridge. The boost bridge amplifier provides fourtimes higher peak power at the loudspeaker than the power,which can be achieved by a class-D amplifier from the samepower supply. Total harmonic distort...

We report results on the synchronization of an organ pipe either by a second pipe or by a loudspeaker, positioned side by side. Classical theory suggests oscillation death for the synchronization of two organ pipes. With our measurements we clearly exclude this scenario. Rather, we identify the aeroacoustical coupling by the oscillating wind sheet at the pipe mouth as the source of a self-regul...

Probe-microphone measurements are typically made with behind-the-ear (BTE) and in-the-ear (ITE) hearing aids with the loudspeaker located at 0-degrees or 45-degrees azimuth at head level and the reference microphone positioned on the head near the hearing aid microphone. With body-worn instruments, these conditions may not accurately reflect in situ hearing aid performance. This study compared ...

Wave Field Synthesis is a technique for spatial sound reproduction that overcomes the limitations of classical stereophonic techniques. A thorough analysis of acoustic wave propagation prinicples delivers the technical description in terms of loudspeaker array technology. Suitable signal processing methods convert the source signals into driving signals for each loudspeaker. The suitability of ...

1.0 Binaural Directly from eardrum to eardrum 1 1.1 Binaural in practice 2 1.2 Quasi-binaural recording for loudspeaker playback 2 2.0 From mono to stereo by panning 4 2.1 Recording and rendering with paired microphones 6 2.2 Rendering below 1 kHz 10 2.3 Spaced microphones 13 2.4 Blending AB and XY recording techniques 15 3.0 Rendering in a reverberant environment 16 3.1 Loudspeaker placement 2...