Multi-channel reproducing apparatus and multi-channel reproducing loudspeaker apparatus

• US 20040071059A1
• Filed: 03/26/2003
• Published: 04/15/2004
• Est. Priority Date: 06/18/2002
• Status: Abandoned Application

• Current Assignee: Denon Electronics (DEI Holdings Incorporated)
• Original Assignee: Denon Electronics (DEI Holdings Incorporated)
• Inventors: Kikuchi, Atsushi, Tanaka, Katsuya
• Application Number:
  US10/396,384
• Publication Number:
  US 20040071059A1
• Time in Patent Office: Days
• US Class Current: 369/47.23
• CPC Class Codes: H04R 2420/01 Input selection or mixing for amplifiers or loudspeakers for hearing aids H04R25/43
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F
• CPC Class Codes: H04R 5/04 Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments combinations of amplifiers H03F3/68; stereophonic systems H04S
• CPC Class Codes: H04S 3/00 Systems employing more than two channels, e.g. quadraphonic H04S5/00, H04S7/00 take precedence

Abstract

The object of the present invention is to provide multi-channel reproducing apparatuses and multi-channel reproducing loudspeaker apparatuses that can be easily connected to one another. In the multi-channel reproducing apparatus 1, a DSP 6 converts an inputted audio signal to audio signals for a plurality of channels, adds channel identification information to each audio signal and multiplexes the audio signals to generate a multi-channel reproducing signal. The DSP 6 supplies the multi-channel reproducing signal to a plurality of multi-channel reproducing loudspeaker apparatuses 20₁ to 20_n that are dispersedly arranged. These multi-channel reproducing loudspeaker apparatuses 20₁ to b 0_n input the multi-channel reproducing signal from an input terminal 20a and output the signal to outside from an output terminal 20b. Each loudspeaker apparatuses 20₁ to 20_n extracts and reproduces the audio signal of the channel assigned thereto from among the multi-channel reproducing signals inputted from a decoder 11 and outputs audio sound from a loudspeaker 16.

Claims

1. A multi-channel reproducing apparatus for generating a multi-channel reproducing signal and supplying the multi-channel reproducing signal to a plurality of multi-channel reproducing loudspeaker apparatuses arranged dispersedly, comprising:

a signal process unit for converting an inputted audio signal to audio signals for a plurality of channels, adding channel identification information to each of the audio signals and multiplexing them to generate a multi-channel reproducing signal.

2. A multi-channel reproducing apparatus according to claim 1, further comprising:

a selection unit for selecting an audio signal source of the audio signal to be inputted to said signal process unit from among a plurality of audio signal sources.

3. A multi-channel reproducing apparatus according to claim 1, wherein said signal processing unit compresses each of the audio signals for a plurality of channels converted, adds channel identification information to each compression signal and subjects the compression signals to time division multiplexing to generate a multi-channel reproducing signal.

4. A multi-channel reproducing apparatus according to claim 3, wherein

said signal processing unit generates the multi-channel reproducing signal by subjecting each compression signal having channel identification information added thereto to time division multiplexing with a sync signal.

5. A multi-channel reproducing loudspeaker apparatus for outputting audio sound according to multi-channel reproducing signals, wherein

said multi-channel reproducing signal is generated by multiplexing audio signals for a plurality of channels each having channel identification information added thereto, and said multi-channel reproducing loudspeaker apparatus includes:

an input terminal of the multi-channel reproducing signal;

at least one of output terminal for outputting the multi-channel reproducing signal inputted to said input terminal to outside; and

a reproducing process unit for extracting the audio signal of the channel assigned thereto from among the multi-channel reproducing signals inputted to said input terminal, reproduces the audio signal extracted and outputs audio sound from said loudspeaker.

6. A multi-channel reproducing loudspeaker apparatus according to claim 5, wherein

said multi-channel reproducing signal is multiplexed with a sync signal in addition to the audio signals for a plurality of channels, and

said reproducing processing unit extracts the audio signal of the channel assigned thereto from among the multi-channel reproducing signals inputted to said input terminal, stores the audio signal extracted in a memory, and reproduces and audio-outputs the audio signal stored in said memory in synchronism with the sync signal contained in the multi-channel reproducing signals.

7. A multi-channel reproducing loudspeaker apparatus according to claim 5, wherein

said multi-channel reproducing loudspeaker apparatuses are connected to one another in a chain form through said input terminal and said output terminal.