A multiplexer for mixing multiple audio inputs into a plurality of summed audio outputs in which computer-controlled sensors are associated with the amplifier components of the multiplexer for specific monitoring the voice levels and in association with the volume controls maintains the voice levels within selected parameters.

In a multi-channel audio circuit, a plurality of input signals are supplied to corresponding amplifiers each respectively connected to speakers, at least one of the input signals being inverted. The speaker connected to the amplifier receiving the inverted signal is connected at a polarity opposite that of the other speakers.

A method and apparatus for distributing audio signals from one of a plurality of audio sources to an output connect compressed audio signals from each one of the plurality of audio sources to an audio processor. Uncompressed audio signals are derived from the compressed audio signals. The compressed audio signal from one of the plurality of audio sources is selectively coupled to the output based upon the uncompressed audio signals. In a preferred embodiment, the compressed audio signal from one...

An audio storybook incorporates raised characters within the storybook which are electronically connected to sound synthesizer and reproduction apparatus associated with a book. The book provides the ability to utilize a progressively revealed pattern in a story, thus improving the ability of such storybooks to accommodate complex story lines and hold the reader's attention.

A method for configuring an audio mixer in an audio interface for a speech recognition application in a computer system in accordance with an inventive arrangement comprises the steps of: (a) displaying at least one graphical user interface for selecting an audio input and output device from a plurality of audio input and output devices compatible with the speech recognition application, including: a headset with a microphone and an earpiece speaker; a microphone not forming part of a headset; a...

An audio system includes a circuit (12) for processing an audio signal, this circuit (12) having an input (20) for receiving the audio signal and an output (26) for supplying an output signal. The circuit (12) further includes a harmonics generator (22) coupled to the input (20) for generating harmonics of the audio signal, and an adding circuit (24) coupled to the input (20) as well as to the harmonics generator (22) for supplying a sum of the audio signal and the generated harmonics to the out...

An audio mixer system is described for producing coded output in which at least a left audio signal, a right audio signal and a surround audio signal are encoded in two output channels so that the surround signal can be decoded from the difference of the two output channels. The system comprises means for generating position data designating a desired position for a sound source in a 360 degree sound field. Logic is provided for determining the relative volume of the sound source in the left, ri...

A rear speaker and a front speaker are provided in a room. A microphone is disposed at a listening position between the front and rear speakers for picking up a first sound from the front speakers and a second sound from the rear speaker. Time lags of the first sound and the second sound is obtained from the outputs of the microphone, and the time difference between the time lags is obtained. An antiphase audio signal opposite to a reflected composite signal included in the first sound picked up...

An audio jack (1) comprises an insulative housing (3), a shield (2) enclosing the housing, and a plurality of contacts (4) assembled in the housing. The housing comprises a mating face (32) toward a complementary plug connector, a pair of mating heads (320) extending forwardly from the mating face, and two pairs of opposite supporting ribs (321) formed at the junctions between the mating head and the mating face to protect the mating heads from being broken for repeated insertions or undue inser...

Tracks are automatically selected from plural tracks recorded on a CD and are recorded on a MD so that a total reproducing time of the tracks thus selected is within a recordable time of the MD. Upon receiving a notification of the recordable time of the MD 29, a system controller 14 of a CD player 10 selects and reproduces tracks recorded on the CD 19 in accordance with a predetermined priority order so that the total reproducing time of the tracks thus selected does not exceed the recordable t...