Claims
- 1. An amplifier device for use with a headphone comprising:a first input terminal that receives a first audio signal from an external source; a first output terminal that provides said first audio signal, received via said first input terminal, to outside said amplifier device; a second input terminal that receives a second audio signal from an external source; a mixing circuit that mixes said first and second audio signals received via said first and second input terminals, said mixing circuit including an operator for adjusting mixing levels of said first and second audio signals; and a second output terminal that supplies an output from said mixing circuit to said headphone, wherein said first output terminal is connected to an input of an audio mixer device and said second input terminal is connected to an output of the audio mixer device, and wherein an output signal from the audio mixer device is received by said second input terminal as said second audio signal.
- 2. An amplifier device as recited in claim 1 wherein said operator of said mixing circuit adjusts levels of said first and second audio signals using balance volume control.
- 3. An amplifier device as recited in claim 1 wherein said operator of said mixing circuit adjusts a level of one of said first and second audio signals.
- 4. A mixer system comprising:a main mixing section including a plurality of input terminals that receives audio signals, said main mixing section separately adjusting a volume level of each of the audio signals received via said input terminals and mixing the audio signals, having been adjusted in volume level, to provide a mixed signal; and an individual mixing section including: a first input terminal that receives a first audio signal from an external source; a first output terminal that provides said first audio signal, received via said first input terminal, to outside said individual mixing section; a second input terminal that receives a second audio signal from outside said individual mixing section; a mixing circuit that mixes said first and second audio signals received via said first and second input terminals, said mixing circuit including an operator for adjusting mixing levels of said first and second audio signals; and a second output terminal that supplies an output from said mixing circuit, wherein said mixer system can include a plurality of said individual mixing sections depending on a specific number of said input terminals of said main mixing section, the audio signal from said first output terminal of said individual mixing sections being supplied to said input terminals of said main mixing section, the mixed signal from said main mixing section being supplied to said second input terminal of said individual mixing sections.
- 5. An amplifier device suitable for use with a headphone, said amplifier device being suitable for use in combination with a mixer device having a first mixing circuit that mixes audio signals received via a plurality of input channels and thereby outputs a mixed audio signal, said amplifier device comprising:a first input terminal that receives a first audio signal from a first external source corresponding to one of said plurality of input channels; a first output terminal that provides said first audio signal, received via said first input terminal, to outside said amplifier device, said first output terminal being connectable to an input terminal for the one of said plurality of input channels in said mixer device; a second input terminal that receives a second audio signal from a second external source, wherein said second input terminal is capable of receiving, as said second audio signal, the mixed audio signal outputted by said mixer device functioning as said second external source; a second mixing circuit that mixes said first and second audio signals received via said first and second input terminals, said second mixing circuit including an operator for adjusting mixing levels of said first and second audio signals; and a second output terminal that supplies an output from said second mixing circuit to said headphone.
- 6. An amplifier device as recited in claim 5 wherein said operator of said second mixing circuit adjusts levels of said first and second audio signals using balance volume control.
- 7. An amplifier device as recited in claim 5 wherein said operator of said second mixing circuit adjusts a level of one of said first and second audio signals.
Priority Claims (1)
Number |
Date |
Country |
Kind |
9-226541 |
Aug 1997 |
JP |
|
Parent Case Info
This application is a division of application Ser. No. 09/138,463, filed on Aug. 21, 1998.
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Foreign Referenced Citations (1)
Number |
Date |
Country |
63-6782 |
Feb 1988 |
JP |