Microphone Array

Microphone and Loudspeaker Array Signal Processing Steps towards a “Radiation Keyboard” for Authentic Samplers

“…The harpsichord soundboard is a continuous radiator of sound, but can be simplified as a discrete distribution of N = 1500 radiating points Y n , referred to as equivalent sources [23]. These equivalent sources sample the vibrating sound board.…”

“…A regularization method relaxes the matrix and yields lower amplitudes. An overview about regularization methods can be found in [21,23,40]. For musical instruments, the Minimum Energy Method (MEM) [23,41] is very powerful.…”

“…To date, sound field synthesis methods to reconstruct the sound radiation characteristics of musical instruments do not incorporate exact nearfield microphone array measurements of musical instruments, as described in [21][22][23][24][25]. This is most likely because the measurement setup and the digital signal processing for high-precision microphone array measurements are very complex on their own.…”

Perceptual evaluation of violin radiation characteristics in a wave field synthesis system

“…The idea behind this is that many microphones 'hear' more than only one or two microphones and that with more information collected the analysis and reconstruction of a sound field becomes easier. Here, circular and spherical arrays are most important because they are a natural choice when it comes to simple sound field recording around a source ( [12], p. 1179ff.…”

Perceptual sound field synthesis concept for music presentation

“…It could be shown that the complex point source model yields plausible results concerning interaural cues in the radiated sound field [9,11,13]. Furthermore, circular and spherical arrays are considered a natural choice when it comes to sound field recordings around a source [48], and complex point sources were found to yield more natural sound impressions in auralizations [47]. As a sparse, but perceptually meaningful representation of the radiation characteristic of a musical instrument, we store the radiation pattern of one salient frequency within each critical band, yielding 25 radiation patterns.…”