Abstract:
In accordance with embodiments of the present disclosure, a method for processing audio information in an audio device may include reproducing audio information by generating an audio output signal for communication to at least one transducer of the audio device, receiving at least one input signal indicative of ambient sound external to the audio device, detecting from the at least one input signal a near-field sound in the ambient sound, and modifying a characteristic of the audio information reproduced to the at least one transducer in response to detection of the near-field sound.
Abstract:
NOISE CANCELLATION MICROPHONES WITH SHARED BACK VOLUME A multi-microphone device includes a device package and a plurality of microphones. The device package defines a component cavity and a plurality of vias. The vias comprise openings in the device package extending between the component cavity and an exterior. The microphones are located within the component cavity sharing a back volume in common. The microphones are configured to generate electrical signals in accordance with acoustic pressure in the respective vias. Further, an audio apparatus includes a housing, a speaker and at least two microphones within the housing sharing a back volume in common. A first acoustical conduit extends from a first end in proximity to the first microphone to a first exterior location and a second acoustical conduit extends from a second end in proximity to the second microphone to a second exterior location.
Abstract:
In some examples, sound verification may include a speaker device that may be configured to transmit sound at a dynamic volume level and a listening device that may be configured to receive the sound and provide feedback to the speaker device based on the received sound. The primary transceiver device may be further configured to adjust the dynamic volume level based on the feedback provided by the secondary transceiver device.
Abstract:
In an example, a mobile computing device is provided with mechanical driver s for enhancing audio output, including low‐frequency audio. The mechanical drivers may be provided to supplement traditional speakers. In an embodiment, mechanical drivers are boosted in effectiveness by being disposed against a sturdy surface such as a desktop. When a user holds a convertible tablet up, such enhancement may be provided by enabling mechanical drivers that are disposed against a base or other structural member of the convertible tablet.
Abstract:
La présente invention concerne un circuit d'alimentation en signaux acoustiques d'au moins un haut-parleur (HP) incorporant un dispositif de filtrage du pic de résonance dudit au moins un haut-parleur (HP) se produisant à une fréquence donnée, caractérisé en ce que le dispositif de filtrage du pic de résonance dudit au moins un haut-parleur (HP) est incorporé soit dans le premier circuit de masse d'instrumentation ou soit dans la boucle en retour, ce dispositif de filtrage étant purement électrique sous la forme d'une impédance incorporée dans le premier circuit de masse d'instrumentation ou dans la boucle en retour, les paramètres de l'impédance étant prédéterminés en fonction du pic de résonance à filtrer dudit au moins un haut-parleur (HP).
Abstract:
La présente invention concerne un dispositif de commande d'un haut-parleur (14) dans une enceinte comportant : - une entrée pour un signal audio (S audio_ref ) à reproduire; - une sortie de fourniture d'un signal d'excitation du haut-parleur; - des moyens (26, 36, 38, 70, 80, 90) pour calculer à chaque instant, le signal d'excitation du haut-parleur (14) en fonction du signal audio (S audio_ref ). Il comporte en amont des moyens (26, 36, 38, 70, 80, 90) pour calculer le signal d'excitation, des moyens (24, 25) de calcul d'une grandeur dynamique désirée (A ref ) de la membrane du haut-parleur en fonction du signal audio (S audio_ref ) à reproduire et de la structure de l'enceinte, les moyens (25) de calcul de la grandeur dynamique désirée (A ref ) de la membrane du haut-parleur étant propres à appliquer une correction différente de l'identité, et tenant compte de grandeurs dynamiques structurelles (x o , v o ) de l'enceinte différentes des seules grandeurs dynamiques relatives à la membrane du haut-parleur, et les moyens (26, 36, 38, 70, 80, 90) pour calculer le signal d'excitation du haut-parleur sont propres à calculer le signal d'excitation en fonction de la grandeur dynamique désirée (A ref ) de la membrane du haut-parleur.
Abstract:
A method of reducing noise is provided. The method includes determining whether an audio output of the audio source has interference based on a sampling frequency and an operating frequency of at least one device element e, and maintaining or changing the operating frequency of the at least one device element depending on whether interference is determined.
Abstract:
In general, techniques are described for limiting active noise cancellation output. As one example, an apparatus comprising one or more processors may perform the techniques. The one or more processors may be configured to, when an estimated noise level increases, dynamically lowering application of active noise cancellation to at least a portion of an audio signal to obtain at least a portion of an active noise cancelled version of the audio signal.
Abstract:
Provided are methods and systems for enhancing the intelligibility of an audio (e.g., speech) signal rendered in a noisy environment, subject to a constraint on the power of the rendered signal. A quantitative measure of intelligibility is the mean probability of decoding of the message correctly. The methods and systems simplify the procedure by approximating the maximization of the decoding probability with the maximization of the similarity of the spectral dynamics of the noisy speech to the spectral dynamics of the corresponding noise-free speech. The intelligibility enhancement procedures provided are based on this principle, and all have low computational cost and require little delay, thus facilitating real-time implementation.
Abstract:
In accordance with embodiments of the present disclosure, a digital microphone system may include a microphone transducer and a digital processing system. The microphone transducer may be configured to generate an analog input signal indicative of audio sounds incident upon the microphone transducer. The digital processing system may be configured to convert the analog input signal into a first digital signal having three or more quantization levels, and in the digital domain, process the first digital signal to convert the first digital signal into a second digital signal having two quantization levels.