Abstract:
A sound system comprises at least three audio driver arrangements (101, 103, 105) for emitting audio signals. The audio driver arrangements (101, 103, 105) are angled relative to each other to emit sound signals in different directions angled at least 45° apart. A driving unit (201, 203, 205) is provided for each audio driver arrangement (101, 103, 105) to generate a drive signal. The audio driver arrangements (103, 105) angled most relative to each other are arranged to emit audio signals being between 90° and 270° out of phase. The driving arrangement (201) for the third audio driver arrangement (101) has a varying phase response with a variation resulting in the emitted audio signal varying between a first phase interval proximal the signal emitted from a first of the other audio driver arrangements (103) and a second phase interval proximal to the signal emitted from the second of the other audio driver arrangements (105). The invention may e.g. allow a reduced sensitivity to speaker and listening positions.
Abstract:
A plural-channel audio signal (e.g., a stereo audio) is processed to modify a gain (e.g., a volume level or loudness) of an estimated dialogue signal (e.g., dialogue spoken by actors in a movie) relative to other signals (e.g., reflected or reverberated sound). In some aspects, a controller is used to control master volume and dialogue volume. In some aspects, one or more graphical objects and/ or user interface elements are used to indicate volume levels and other information.
Abstract:
A method of mixing audio channels (R, C, L) is effective at rebalancing the audio without introducing unwanted artifacts or overly softening the discrete presentation of the original audio. This is accomplished between any two or more input channels (R, C, L) by processing the audio channels to generate one or more "correlated" audio signals for each pair of input channels. The in-phase correlated signal (150, 152) representing content in both channels that is the same or very similar with little or no phase or time delay is mixed with the input channels. The present approach may also generate an out-of-phase correlated signal (same or similar signals with appreciable time or phase delay) that is typically discarded and a pair of independent signals (signals not present in the other input channel) that may be mixed with the input channels.
Abstract:
A method of mixing audio channels (R, C, L) is effective at rebalancing the audio without introducing unwanted artifacts or overly softening the discrete presentation of the original audio. This is accomplished between any two or more input channels (R, C, L) by processing the audio channels to generate one or more "correlated" audio signals for each pair of input channels. The in-phase correlated signal (150, 152) representing content in both channels that is the same or very similar with little or no phase or time delay is mixed with the input channels. The present approach may also generate an out-of-phase correlated signal (same or similar signals with appreciable time or phase delay) that is typically discarded and a pair of independent signals (signals not present in the other input channel) that may be mixed with the input channels.
Abstract:
A sound reproduction system has pairs of sound emitters that subtend different angles THETA , the span angle, at the listener position. The pairs of sound emitters are arranged to be excited by different frequency bands of the signal output from an inverse filter means (Hh, H1). The operational span-frequency range of the pairs of sound emitters is determined by an equation (I) where the transducer span THETA is the angle subtended at the listener by a pair of transducers, where O
Abstract:
A sound reproduction system for converting stereo signals on two input channels (92, A, LEFT; 94, B, RIGHT), which may have been directionally encoded from a four or five channel original using a phase/amplitude film matrix encoder, such signals including at least one component which is directionally encoded through a phase and amplitude encoding device and at least one component that is not directionally encoded but is different in the two input channels, into signals for multiple output channels (172, 174, 176, 178, 180), for example center (174), front left (172), front right (176), side left (178), side right (180), rear left, and rear right, including decoding apparatus (90) for enhancing the directionally encoded component of the input signals in the desired direction and reducing the strength of such signals in channels not associated with the encoded direction, while preserving both the maximum separation between the respective left and right channels, and the total energy of the non-directionally encoded component.
Abstract:
The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for implementing such anti-aliasing and/or anti-imaging filters with reduced computational complexity. In addition, the present document relates to further aspects of an audio encoding and decoding system, such as the phase relation between the channels of a multi-channel audio signal and/or the structure of the bitstream of an encoded audio signal.
Abstract:
A method for pre-processing a channelized music signal to improve perception and appreciation for a hearing prosthesis recipient. In one example, the channelized music signal is a stereo input signal. A device, such as a handheld device, hearing prosthesis, or audio cable, for example, applies a mask to a stereo input signal to extract a center-mixed component from the stereo signal and outputs an output signal comprised of a weighted combination of the extracted center-mixed component and a residual signal comprising a non-extracted part of the stereo input signal. The center-mixed component may contain components, such as leading vocals and/or drums, preferred by hearing prosthesis recipients relative to other components, such as backing vocals or other instruments.
Abstract:
Procédé de restitution sonore d'un signal numérique audio Procédé de restitution sonore d'un signal numérique audio comportant une étape de suréchantillonnage consistant à produire à partir d'un signal échantillonné à une fréquence F un signal échantillonné à une fréquence NxF, où N correspond à un entier supérieur à 1, puis à appliquer un traitement de convolution sur un premier fichier numérique échantillonné à une fréquence NxF correspondant à l'acquisition de l'ambiance sonore d'un espace sonore de référence, un second fichier numérique échantillonné à une fréquence NxF correspondant à l'acquisition de l'empreinte sonore d'un équipement de restitution de référence, et troisième fichier numérique échantillonné à une fréquence NxF correspondant à l'acquisition de l'empreinte sonore d'un équaliseur ainsi qu'un quatrième fichier correspondant audit fichier audio suréchantillonné, les paquets numériques résultant faisant ensuite l'objet d'un traitement numérique de conversion à une fréquence d'échantillonnage F/M correspondant à la fréquence de travail de l'équipement d'écoute.