Abstract: A loudspeaker enclosure comprising a plurality of acoustic sources and having controlled broad-band directivity.

Abstract: The present invention relates to a spatial arrangement for optimizing the broadcasting of a sound signal and thus replacing the conventional stereo systems. For this purpose, the spatial arrangement is capable of broadcasting a spatialized sound signal, the spatialized sound signal comprising N mutually distinct audio signals, N being an integer strictly greater than 3, and the spatial arrangement comprising a set of N sound broadcasting devices predominantly distributed over the entire width of a scene. Each sound broadcasting device receives an audio signal of which it will amplify and broadcast the transmitted sound. In particular, each sound broadcasting device is specifically capable of reproducing and preserving the characteristics of the sound transmitted by the audio signal received, in particular the sound frequency bands and the sound intensity of the frequency bands of the audio signal.

Abstract: The present invention relates to a sound diffusion device (300) comprising a single box (310) and, in this single box (310), at least two superimposed high-frequency acoustic sources (320), and a plurality of superimposed medium and/or low-frequency sources (330) and arranged to the left and/or to the right of the high-frequency acoustic sources (320), the high-frequency acoustic sources (320) being coupled individually to a wave guide (340) so as to generate a vertical wave front with a fixed non-constant curvature. Such a device (300) makes it possible to minimise discontinuities between the acoustic sources providing high quality sound diffusion (no parasite lobe), to considerably reduce the weight and the cost of manufacturing and also enables rapid installation which does not require the angular adjustment of each acoustic source relative to one another contrary to existing devices.

Abstract: A signal processing system and method is disclosed for applying time-based effects to an N-channel audio input signal for reproduction on a set of loudspeakers having a predetermined configuration. A first M-channel audio signal is produced from the N-channel audio input signal. Each channel of the first M-channel audio signal is associated with a subset of the loudspeakers. A second M-channel audio signal is produced from the first M-channel audio signal according to an M×M matrix, each element aij in the M×M matrix including a delay term. A minimum value of the delay term in each element aij is determined according to a distance between at least two loudspeakers in at least one of the i and j subsets of loudspeakers and according to minimum delay value of a time-based delay effect applied to each channel of the second M-channel audio signal. A K-channel audio signal is then produced from the or each second M-channel audio signal.

Abstract: The invention relates to a sound broadcasting device comprising a high-frequency section including at least one high-frequency acoustic source (SHF), and a medium-frequency section including at least two medium-frequency sources (SMF), the acoustic sources (SHF, SMF) being vertically superposed, where the medium-frequency section comprises a lower sub-section, arranged below the high-frequency section and comprising at least one medium-frequency acoustic source (SMF), and an upper sub-section, arranged above the high-frequency section and comprising at least one medium-frequency acoustic source (SMF), where the vertical directivity of the high-frequency section has an incline, relative to the horizontal (H), that is substantially equal to the incline (?MF) of the vertical directivity of the medium-frequency section relative to the horizontal (H), so that the overall vertical directivity of the device has a non-zero incline (?Dir) relative to the horizontal (H).

Abstract: A method for producing a multi-channel audio signal from one or more sound object signals is disclosed, where, for each sound object signal a plurality of width signals is produced, the amplitudes of the width signals following a substantially Gaussian distribution. The width signals are processed to produce a plurality of pan signals which are mapped to at least one channel. Each channel in the audio signal is produced by combining the pan signals from each sound object. An apparatus for reproducing such a multi-channel audio signal is also disclosed, in which a plurality of first loudspeakers are provided spaced around a first arc forward of a predetermined listening zone, each of the first loudspeakers facing towards the listening zone and substantially equidistant therefrom. A plurality of second loudspeakers are provided spaced around a second arc behind the listening zone, each of the second loudspeakers facing towards the listening zone.

Abstract: The present invention relates to a device for measuring an electric current generated by an acoustic amplifier in order to actuate an acoustic speaker comprising: a resistor (1) positioned in series between the amplifier and the speaker; a voltage-to-current converter (3), the inputs of which are connected to the terminals of the resistor (1), and which proportionally converts the difference in voltage across the terminals of the shunt to a signal current; a first current mirror (7), the input of which is connected to the output of the voltage-to-current converter (3) and the output of which is connected to a current-to-voltage converter (5); a constant bias current generator (9) connected to an input of the voltage-to-current converter (3) and the output of which is connected to the current-to-voltage converter (5) via a second current mirror (11), and capable of generating a bias current such that the device operates in linear mode and without saturation regardless of the electric current generated by th

Abstract: The disclosure includes a sound system comprising at least one Digital Signal Processor control module, acting on a signal to the high-frequency transducer and on a signal to a mid-frequency transducer so as to apply, in a common frequency range, at least one magnitude parameter as well as at least one phase parameter so as to produce a directivity along the same angular sector as a directivity produced by the orientable shutters.

Abstract: The disclosure includes a sound system comprising at least one Digital Signal Processor control module, acting on a signal to the high-frequency transducer and on a signal to a mid-frequency transducer so as to apply, in a common frequency range, at least one magnitude parameter as well as at least one phase parameter so as to produce a directivity along the same angular sector as a directivity produced by the orientable shutters.

Abstract: The invention relates to a public address system including one or more loudspeakers, each of which is in particular equipped with a section for reproducing high-frequency sounds, including a wave expansion guide, which receives, at its input sound waves coming from a transducer and having, projecting in a plane, a form opening outwards from its input to its output for distributing, in a solid transmission angle, the sound waves coming from the expansion guide. According to the invention, the expansion guide includes one or more mobile flaps that can be moved by a movement made parallel to the plane, so as to enable the solid transmission angle of the sound waves to be adjusted.