Abstract: A signal processor includes an input unit that receives a first audio signal and a second audio signal including mutually correlated components, a delay unit that delays the first audio signal received at the input unit by a prescribed delay time, a synthesis unit that synthesizes the first audio signal having been delayed by the delay unit with the second audio signal received at the input unit, and outputs a third audio signal resulting from synthesis, and a frequency band restriction unit that restricts a level of the first audio signal before the synthesis in a prescribed frequency band including a frequency of a dip occurring at a lowest frequency among a plurality of dips occurring in a frequency characteristic of the third audio signal as a result of the synthesis performed by the synthesis unit

Abstract: An audio processing apparatus includes a measuring unit adapted to output a measure-test sound from a plurality of speaker devices and measure an arriving direction of an indirect sound for the output measure-test sound, a generator adapted to generate an adjustment sound for adjusting the indirect sound, and an adjustment sound adder adapted to add the adjustment sound into a sound to be output from at least one of the plurality of speaker devices by a distribution ratio which is set based on the arriving direction of the indirect sound.

Abstract: An acoustic device includes a housing, a loudspeaker, a terminal provided for the housing, an identifying section that specifies an external unit mounted on the terminal, and a control section that determines a control content corresponding to the external unit identified by the identifying section and controls the loudspeaker according to the determined control content.

Abstract: An audio device (e.g. an AV amplifier), with a plurality of audio output terminals according to the HDMI standard, converts audio data of a source device into audio signals suited to audio reproduction abilities (e.g. channel counts) of sink devices. The audio device stores a plurality of audio reproduction ability information describing the predetermined channel count thereof and the channel counts of sink devices, wherein arbitrary audio reproduction ability information precluding audio reproduction ability information of a sink device with the smallest channel count is provided to a source device. The audio device performs down-mixing on audio signals with respect to a sink device whose channel count is smaller than the predetermined channel count, while the audio device performs signal processing on audio signals with respect to a sink device whose channel count is larger than the predetermined channel count.

Abstract: Under the control of a controller, a DSP supplies audio signals received from a switch circuit to a main zone DAC, subjects the audio signals received from the aforementioned switch circuit (i.e., audio signals for main zone use) to down-mixing processing so that the number of channels matches the number of output terminals assigned to each zone, and respectively supplies the audio signals subjected to down-mixing processing to the respective switch circuits of each zone. Each of the aforementioned switch circuits supplies the audio signals received from the subzone DAC to the respective volume adjustor of each zone.

Abstract: A sound processing apparatus includes a processing unit that is configured to acquire an audio signal, perform a correction processing on the acquired audio signal and output the correction-processed audio signal to a sound emitting unit. The correction processing includes an indirect sound adjusting processing in which a given signal processing is performed on an audio signal so as to adjust an influence of an indirect sound to be heard at a sound receiving point, and a frequency characteristic adjusting processing in which a frequency characteristic of an audio signal is adjusted. In the correction processing, a frequency characteristic for the frequency characteristic adjusting processing is determined based on a frequency characteristic of the indirect sound adjusting processing.

Abstract: An audio device (e.g. an AV amplifier), with a plurality of audio output terminals according to the HDMI standard, converts audio data of a source device into audio signals suited to audio reproduction abilities (e.g. channel counts) of sink devices. The audio device stores a plurality of audio reproduction ability information describing the predetermined channel count thereof and the channel counts of sink devices, wherein arbitrary audio reproduction ability information precluding audio reproduction ability information of a sink device with the smallest channel count is provided to a source device. The audio device performs down-mixing on audio signals with respect to a sink device whose channel count is smaller than the predetermined channel count, whilst the audio device performs signal processing on audio signals with respect to a sink device whose channel count is larger than the predetermined channel count.

Abstract: An amplification system of the invention can decrease power consumption in a power amplification section if the power amplification section need not be used. The power consumption in the power amplification section can be decreased by shutting off power feed into a voltage amplification stage by a power control section, and the power feed state into a power amplification stage from a power supply section is not changed. Thus, power feed into the voltage amplification stage of the circuit wherein a large current does not flow needs only to be controlled using limiter means also used for a different application, so that the power consumption of the power amplification section can be decreased without the need for enlarging the circuit scale, with saved space, and simply.

Abstract: An amplification system of the invention can decrease power consumption in a power amplification section if the power amplification section need not be used. The power consumption in the power amplification section can be decreased by shutting off power feed into a voltage amplification stage by a power control section, and the power feed state into a power amplification stage from a power supply section is not changed. Thus, power feed into the voltage amplification stage of the circuit wherein a large current does not flow needs only to be controlled using limiter means also used for a different application, so that the power consumption of the power amplification section can be decreased without the need for enlarging the circuit scale, with saved space, and simply.

Abstract: When a user gives a parameter storage instruction via a remote controller, current settings of parameters in an input switching circuit, surround circuit, graphic equalizer and electronic volume are stored into a non-volatile RAM. Then, once the user gives a reproduction instruction via the remote controller, the stored settings of the parameters are read out from the non-volatile RAM and set to the input switching circuit, surround circuit, graphic equalizer and electronic volume. Once the user selects a desired one of customizing buttons that are provided on the remote controller belonging to an audio apparatus connected with a personal computer and selects functions to be allocated to the selected customizing button, the personal computer creates setting information in accordance with the user's selections, and transmits the thus-created setting information to the audio apparatus. In turn, the audio apparatus stores the allocated functions of the customizing button on the basis of the setting information.

Abstract: When a user gives a parameter storage instruction via a remote controller, current settings of parameters in an input switching circuit, surround circuit, graphic equalizer and electronic volume are stored into a non-volatile RAM. Then, once the user gives a reproduction instruction via the remote controller, the stored settings of the parameters are read out from the non-volatile RAM and set to the input switching circuit, surround circuit, graphic equalizer and electronic volume. Once the user selects a desired one of customizing buttons that are provided on the remote controller belonging to an audio apparatus connected with a personal computer and selects functions to be allocated to the selected customizing button, the personal computer creates setting information in accordance with the user's selections, and transmits the thus-created setting information to the audio apparatus. In turn, the audio apparatus stores the allocated functions of the customizing button on the basis of the setting information.

Abstract: When a user gives a parameter storage instruction via a remote controller, current settings of parameters in an input switching circuit, surround circuit, graphic equalizer and electronic volume are stored into a non-volatile RAM. Then, once the user gives a reproduction instruction via the remote controller, the stored settings of the parameters are read out from the non-volatile RAM and set to the input switching circuit, surround circuit, graphic equalizer and electronic volume. Once the user selects a desired one of customizing buttons that are provided on the remote controller belonging to an audio apparatus connected with a personal computer and selects functions to be allocated to the selected customizing button, the personal computer creates setting information in accordance with the user's selections, and transmits the thus-created setting information to the audio apparatus. In turn, the audio apparatus stores the allocated functions of the customizing button on the basis of the setting information.

Abstract: When a user gives a parameter storage instruction via a remote controller, current settings of parameters in an input switching circuit, surround circuit, graphic equalizer and electronic volume are stored into a non-volatile RAM. Then, once the user gives a reproduction instruction via the remote controller, the stored settings of the parameters are read out from the non-volatile RAM and set to the input switching circuit, surround circuit, graphic equalizer and electronic volume. Once the user selects a desired one of customizing buttons that are provided on the remote controller belonging to an audio apparatus connected with a personal computer and selects functions to be allocated to the selected customizing button, the personal computer creates setting information in accordance with the user's selections, and transmits the thus-created setting information to the audio apparatus. In turn, the audio apparatus stores the allocated functions of the customizing button on the basis of the setting information.

Abstract: When a user gives a parameter storage instruction via a remote controller, current settings of parameters in an input switching circuit, surround circuit, graphic equalizer and electronic volume are stored into a non-volatile RAM. Then, once the user gives a reproduction instruction via the remote controller, the stored settings of the parameters are read out from the non-volatile RAM and set to the input switching circuit, surround circuit, graphic equalizer and electronic volume. Once the user selects a desired one of customizing buttons that are provided on the remote controller belonging to an audio apparatus connected with a personal computer and selects functions to be allocated to the selected customizing button, the personal computer creates setting information in accordance with the user's selections, and transmits the thus-created setting information to the audio apparatus. In turn, the audio apparatus stores the allocated functions of the customizing button on the basis of the setting information.

Abstract: An audio system has a plurality of capabilities for processing an audio signal with visual indication of the capabilities by labels. In the audio system, an audio device such as amplifier and effector selectively provides the capabilities of processing an audio signal. A first storage device provisionally stores display data representative of labels corresponding to the capabilities. An editing device is operated to edit the display data so that the labels can be customized in association with the capabilities. A second storage device stores the edited display data. A selecting device selects one of the capabilities. A display device displays the label corresponding to the selected capability according to the display data stored in either of the first storage device and the second storage device.

Abstract: When a user gives a parameter storage instruction via a remote controller, current settings of parameters in an input switching circuit, surround circuit, graphic equalizer and electronic volume are stored into a non-volatile RAM. Then, once the user gives a reproduction instruction via the remote controller, the stored settings of the parameters are read out from the non-volatile RAM and set to the input switching circuit, surround circuit, graphic equalizer and electronic volume. Once the user selects a desired one of customizing buttons that are provided on the remote controller belonging to an audio apparatus connected with a personal computer and selects functions to be allocated to the selected customizing button, the personal computer creates setting information in accordance with the user's selections, and transmits the thus-created setting information to the audio apparatus. In turn, the audio apparatus stores the allocated functions of the customizing button on the basis of the setting information.

Abstract: A cassette deck of a car stereo has at least one capstan and a motor for driving the capstan. An accessory switch is provided in a car provided with the car stereo. A accessory switch detector is provided for detecting closing of the accessory switch. A cassette detector is provided for detecting setting of a cassette to the cassette deck. In response to detection of closing of the accessory switch, and setting of the cassette, the motor is operated for rotating the capstan for a predetermined time.