Audio mixer/pre-amplifier
First Claim
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1. A stereo pre-amplifier for mixing audio input signals comprising:
- (a) a means for supplying input signals including stereo phonograph signals and stereo auxilary level signals and low impedance signals to said pre-amplifier;
(b) a means for supplying output signals from said pre-amplifier;
(c) a first summing means for combining said phonograph signals and said auxilary level signals;
(d) a second summing means for combining said low impedance signals;
(e) a cueing means for sampling said input signals prior to said signals being input to said first summing amplifier said cueing means including a means to select one or more of said input signals to be sampled;
(f) a third summing means for combining said sampled signals;
(g) a fourth summing means combining the output of said first summing means and said second summing means whereby said fourth summing means provides pre-amplifier output;
(h) a fifth summing means for combining the output of said first summing means and said second summing means whereby said fifth summing means provides an output to auxilary storage means;
(i) a means for disabling the output of said second summing means from inputing into said fifth summing means;
(j) a means for combining both stereo channels of the inputs of said fourth summing means whereby each of the output channels of said fourth summing means are monophonic signals; and
(k) a means for combining both stereo channels of the output of said third summing means whereby each of the output channels of said third summing means are monophonic signals.
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Abstract
An audio mixer for combining stereo phonograph, stereo high impedance and low impedance input signals having a means for audio previewing one or more of said inputs simultaneously including a means for visually indicating which signals are being previewed, further including a means for audio previewing said signals in a monophonic signal, further including a means for combining said inputs in the final amplifier stage such that the output signal is in a monophonic state, further including a means for disabling said low impedance input from the final output means.
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Citations
7 Claims
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1. A stereo pre-amplifier for mixing audio input signals comprising:
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(a) a means for supplying input signals including stereo phonograph signals and stereo auxilary level signals and low impedance signals to said pre-amplifier; (b) a means for supplying output signals from said pre-amplifier; (c) a first summing means for combining said phonograph signals and said auxilary level signals; (d) a second summing means for combining said low impedance signals; (e) a cueing means for sampling said input signals prior to said signals being input to said first summing amplifier said cueing means including a means to select one or more of said input signals to be sampled; (f) a third summing means for combining said sampled signals; (g) a fourth summing means combining the output of said first summing means and said second summing means whereby said fourth summing means provides pre-amplifier output; (h) a fifth summing means for combining the output of said first summing means and said second summing means whereby said fifth summing means provides an output to auxilary storage means; (i) a means for disabling the output of said second summing means from inputing into said fifth summing means; (j) a means for combining both stereo channels of the inputs of said fourth summing means whereby each of the output channels of said fourth summing means are monophonic signals; and (k) a means for combining both stereo channels of the output of said third summing means whereby each of the output channels of said third summing means are monophonic signals. - View Dependent Claims (2, 3, 4, 5)
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6. A method of mixing signals in a stereo pre-amplifier which comprises:
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(a) supplying input signals from stereo channels to said pre-amplifier including stereo phonograph signals and stereo auxilary level signals; (b) obtaining output of said signals from said pre-amplifier; (c) mixing said phonograph signals and said auxilary level signals such that said signals are combined; (d) selecting one or more of said signals for previewing prior to mixing of said signals; and (e) mixing said selected signals such that said signals are combined for audio previewing prior to pre-amplifier output including combining the stereo channels of said selected signals to obtain a monophonic signal on each stereo channel for audio previewing. - View Dependent Claims (7)
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Specification