Headphones for stereo tactile vibration, and related systems and methods are disclosed. A headphone comprises a first speaker assembly including a first audio driver and a first tactile bass vibrator. The headphone also comprises a second speaker assembly including a second audio driver and a second tactile bass vibrator. The headphone further comprises a signal processing circuit configured to generate a first tactile vibration signal and a second tactile vibration signal from an audio signal to be received by the headphone. The first tactile vibration signal differs from the second tactile vibration signal. A method of operating the headphone includes generating the first tactile vibration signal and the second tactile vibration signal, and driving vibration of the first and second tactile bass vibrators with the first and second tactile vibration signals, respectively. A stereo tactile vibrator system includes the headphone.

The systems and methods described herein relate to, among other things, a transducer capable of producing acoustic and tactile stimulation. The transducer includes a rigid mass element disposed on the diaphragm of a speaker. The mass element may optionally be removable and may have a mass selected such that the resonant frequency of the transducer falls within the range of frequencies present in an input electrical audio signal. The systems and methods advantageously benefits from both the fidelity and audio performance of a full-range speaker while simultaneously producing high-fidelity, adjustable and palpable haptic vibrations.

An audio signal playback device includes a conversion unit that performs discrete Fourier transform on each of 2 channel audio signals obtained from a multi-channel input audio signal, a correlation signal extraction unit that, disregarding a direct current component, extracts a correlation signal from the 2 channel audio signals that result from the discrete Fourier transform, and additionally pulls a correlation signal in a lower frequency than a predetermined frequency f.sub.low out of the correlation signal, and an output unit that allocates the pulled-out correlation signal to a virtual sound source in such a manner that a time difference in a sound output between adjacent speakers falls within a range of 2x/c (where, x is a distance between the adjacent speakers, and c is the speed of sound), and outputs a result of the allocation from one portion or all portions of the speaker group.

Disclosed are a multi-channel audio signal processing method and a multi-channel audio signal processing apparatus. The multi-channel audio signal processing method may generate N channel output signals from N/2 channel downmix signals based on an N-N/2-N structure.

A sound recording method and device are provided in the field of multimedia processing. The method is applied in a mobile terminal including three microphones, including: acquiring three channels of sound signals collected by the three microphones; calculating a central channel signal, a left channel signal, a right channel signal, a rear left channel signal and a rear right channel signal in a multi-channel surround audio system according to the three channels of sound signals; calculating a bass channel signal in the multi-channel surround audio system according to the three channels of sound signals; and combining the above signals to obtain a sound signal of the multi-channel surround audio system.

There are disclosed automatic mixers and methods for creating a surround audio mix. A set of rules may be stored in a rule base. A rule engine may select a subset of the set of rules based, at least in part, on metadata associated with a plurality of stems. A mixing matrix may mix the plurality of stems in accordance with the selected subset of rules to provide three or more output channels.

There are provided audio headsets including one or more vibration speakers. Each vibration speaker includes a haptic driver and a haptic actuator for generating physical vibrations based on an audio input to the vibration speaker. In addition, each vibration speaker includes a rigid output surface designed to make physical contact with a user of the audio headset. The haptic actuator is designed to transfer the physical vibrations generated by the vibration speaker to the user via the rigid output surface.

A wireless speaker system is disclosed that includes a hub that is in wireless communication with a plurality of speakers. Each of the speakers includes a speaker selector module operable to allow a user to select a slot to place each of the speakers in. Each of the speakers is operable to transmit a respective slot setting to the hub based on the selected slot. The hub is operable to transmit audio signals to each of the speakers as a function of the slot setting.

An audio system is disclosed that contains speakers that are configured to transmit unique parameters to an audio source. The system includes a hub that is configured to be connected with one or more audio sources. At least one speaker is included having one or more filter parameters stored internally that are specific to the speaker. The speaker is operable to transmit the one or more filter parameters to the hub. The hub is operable to use the one or more filter parameters to filter an audio channel associated with the speaker and an associated subwoofer channel.

A method for playing back the sound of a digital audio signal comprising an oversampling step consisting of producing, from a signal sampled at a frequency F, a signal sampled at a frequency NF, where N corresponds to an integer greater than 1, then of applying convolution processing to a first digital file sampled at a frequency NF corresponding to the acquisition of the soundscape of a reference sound space, a second digital file sampled at a frequency NF corresponding to the acquisition of the noise footprint of a piece of reference playback equipment, a third digital file sampled at a frequency NF corresponding to the acquisition of the noise footprint of an equalizer and a fourth file corresponding to said oversampled audio file, the resulting digital packets then undergoing digital conversion processing at a sampling frequency F/M corresponding to the working frequency of the listening equipment.