Yamaha Corporation

Ken Iwayama

Takaaki Muto

Naohide Kohyama

Akio Suyama

Peter Charles Eastty

Akihiko Suyama

Masahiro Shimizu

Peter Damien Thorpe

Mitsutaka Goto

Koji Kushida

Takashi Yamakawa

Kenichi Tamiya

Takaaki Makino

Nathan Bentall

Yoshikuni Kitamura

Eamon Hughes

David Hatmaker

Michael John Hunter Smith

An audio signal control circuit includes an adjustment signal generator that extracts a frequency band, which includes a frequency at which a frequency band shared by a low-range speaker and a frequency band shared by a high-range speaker overlap each other, to generate an adjustment signal Sck; a high-range outputter that subtracts the adjustment signal Sck from an audio signal Sa to generate a high-range audio signal SaH and outputs it to a high-pass filter; and a low-range outputter that adds the adjustment signal Sck to the audio signal Sa to generate a low-range audio signal SaL and outputs it to a low-pass filter.

Audio signal control circuit and audio signal control method

In an audio network system constructed from a main node and a plurality of satellite nodes each having a plurality of ports, the main node generates and transmits a main packet including audio signals of a plurality of channels. Each satellite node selects one of the plurality of ports in turn, and confirms whether the main packet arrives at the selected port every predetermined period or not. When the main packet arrives at the selected port every predetermined period, the main packet is received via the port by continuing selection of the port. In the case where reception of the main packet is lost, one is selected from the plurality of ports in turn, the operation to confirm arrival of the main packet is restarted, and another port at which the main packet arrives at the present stage is automatically found.

Audio network system and method of detecting topology in audio signal transmitting system

An apparatus is provided for remotely monitoring a plurality of amplifiers on a display device. The amplifiers are provided to process audio signals and directly or indirectly connected to a network. In the apparatus, a collecting section collects a group code from each of the amplifiers through the network. The group code is allocated to each amplifier according to a grouping system for grouping the plurality of the amplifiers. A display control section displays a tree diagram of the amplifiers according to the collected group codes on the display device as a graphical representation of the grouping system.

Remote audio amplifier monitoring system

When any one of a plurality of amplifiers has been selected in response to amplifier selecting operation, an amplifier Detail View of the selected amplifier is displayed, where corresponding parameters are displayed via elements of the amplifier Detail View. When any one of a plurality of groups has been selected in response to group selecting operation, a group Detail View of the selected group is displayed, where maximum and minimum values detected from among values of a parameter of individual amplifiers of the selected group are displayed via a band-shaped element of a corresponding fader element. In another example, where a hierarchical group is selected in a tree display section on a control screen, respective state information, including parameter values or states of parameters, of a plurality of amplifiers belonging to the selected hierarchical group is displayed in a state information section.

Amplifier system

A speaker array apparatus capable of performing directivity control with ease even when sound emission is performed based on audio signals of different frequency ranges. The speaker array apparatus includes a speaker unit for emitting high-frequency range sound, and another speaker unit for emitting low- and high-frequency range sound. A signal processed by a high pass filter is used for generation of both audio signals used by these speaker units to emit the high-frequency range sounds. Since both the audio signals are rotated in phase similarly to each other, the phases of audio signals supplied to both the speaker units are in coincidence with each other in high-frequency range, which makes it easy to carry out directivity control.

Speaker array apparatus and signal processing method therefor

Disclosed herein is a speaker system unit with a cone type vibration plate, a horn and a diffuser. The horn is disposed such that a small-diameter opening thereof is positioned inward from a front opening of the vibration plate, and an outer surface of the horn is arranged along an inner surface of the vibration plate to form a first acoustic path. The diffuser has a base portion, a front end portion and an outer peripheral surface extending therebetween, and is disposed such that the base portion is positioned inward from a front opening of the horn, opposite the small-diameter opening of the horn. The diffuser has a specific shape such that the outer peripheral surface expands along an inner surface of the horn to form a second acoustic path and then narrows toward the front end portion of the diffuser.

Speaker system with broad directivity

An amplifier controller for controlling a plurality of amplifiers connected therewith is provided. Each of said amplifiers is provided with one or more audio output channels. The amplifier controller operates in two modes of solo mode and normal mode. When the solo mode is initiated, the amplifier controller instructs all of the amplifiers to turn off output of all audio output channels provided in the amplifiers, and only in the solo mode, according to selection of an output channel for which solo output is to be performed, the amplifier controller instructs the amplifier provided with the selected channel to turn on output of the channel, and instructs each of the amplifiers provided with an audio output channel other than the selected channel to turn off output of the audio output channel.

Amplifier controller

An electronic apparatus is mountable in either of a standard mount state in a rack, or an offset mount state which offsets forward from the standard mount state in a depth direction of the rack. A pair of side boards extend rearward from a front panel in the depth direction, and are spaced apart from each other at left and right sides in a width direction perpendicular to the depth direction. A pair of rack angles are attached to the pair of the side boards, respectively. The rack angle is composed of a first mounting plate and a second mounting plate intersecting perpendicularly to the first mounting plate. One of through-holes formed in the first mounting plate of the rack angle and screw holes formed in the side board is positioned in correspondence to both of the standard mount state and the offset mount state, so that the rack angle is selectively attached to the side board in either of the standard mount state and the offset mount state. The second mounting plate of the rack angle is attached to and superposed on an extended part of the front panel in the standard mount state, and otherwise the second mounting plate is spaced rearward in the depth direction apart from the extended part of the front panel in the offset mount state.

Growing community of inventors

Hamamatsu, Japan

Ken Iwayama