Method and apparatus for logic controlled microphone equalization

Claim 2

Apparatus for equalizing a microphone channel in a sound system comprising: means for simultaneously providing an audio signal to a filter network and a logic input signal responsive only to an on-off state of said microphone channel to a microprocessor; means for selectively filtering the audio signal based solely upon the logic input signal provided to said microprocessor; and wherein said means for selectively filtering the audio signal further comprises a combination of preprogrammed filters preset by a user.

Claim 3

The invention of claim 1 wherein said means for simultaneously providing an audio signal to said filter network and a logic signal to said microprocessor comprises automatic audio mixer means.

Claim 4

The invention of claim 1 wherein said filter network comprises a plurality of notch filter means.

Claim 5

The invention of claim 3 wherein each of said plurality of notch filter means comprises bandpass filter means and subtraction circuit means.

Claim 6

The invention of claim 3 wherein each of said plurality of notch filter means comprise variable attenuation frequencies in the range of between approximately 50 Hz and 5 KHz.

Claim 7

The invention of claim 1 wherein said filter network further comprises a plurality of tone control filter means.

Claim 8

The invention of claim 6 wherein said plurality of tone control filter means comprises high pass filter means, low pass filter means and bandpass filter means.

Claim 9

The invention of claim 1 wherein said microprocessor further comprises a non-volatile memory.

Claim 10

The invention of claim 1 wherein said microprocessor further comprises user control means.

Claim 11

The invention of claim 9 wherein said user control means further comprises filter parameter adjustment means.

Claim 12

The invention of claim 1 wherein said microprocessor further comprises user display means.

Claim 13

The invention of claim 1 wherein said sound system further comprises link means, thereby a plurality greater than eight microphone channels are utilized.

Claim 14

The invention of claim 1 wherein said sound system further comprises output amplifier means, power amplifier means, and loudspeaker means.

Claim 17

The invention of claim 14 wherein the step of providing a logic signal to a microprocessor further comprises the step of providing a logic input device.

Claim 18

The invention of claim 14 wherein the step of selectively filtering the audio signal further comprises the steps of: a) selecting the operational mode of the microprocessor; b) selecting the appropriate filter function parameters; and c) adjusting the selected filter function parameters.

Claim 19

The invention of claim 16 wherein the step of adjusting the selected filter function parameters further comprises the step of programming a plurality of filters in the filter network.

Claim 20

The invention of claim 17 wherein the step of programming a plurality of filters further comprises programming a plurality of notch filters in the filter network.

Claim 21

The invention of claim 17 wherein the step of programming a filter comprises programming a plurality of tone control filters in the filter network.

Claim 22

Apparatus for equalizing multiple microphones in a sound system comprising: means for connecting a plurality of microphones to automatic audio mixer means; means for providing audio signals from said automatic audio mixer means; means for providing logic signals from said automatic audio mixer means; means for amplifying and coupling said audio signals to a filter network; means for coupling logic input signals, said logic input signals responsive only to an on-off state of each of said plurality of microphones to a microprocessor; means for selectively filtering said audio signals based solely upon said logic input signals; and means for amplifying and coupling said filtered audio signals to loudspeaker means; wherein said means for selectively filtering said audio signals further comprises a combination of preprogrammed filters preset by a user.

Claim 23

Apparatus for equalizing multiple microphones in a sound system comprising: means for connecting a plurality of microphones to automatic audio mixer means; means for providing audio signals from said automatic audio mixer means; means for providing logic signals from said automatic audio mixer means; means for amplifying and coupling said audio signals to a filter network; means for coupling logic input signals, said logic input signals responsive only to an on-off state of each of said plurality of microphones to a microprocessor; means for selectively filtering said audio signals based solely upon said logic input signals; and means for amplifying and coupling said filtered audio signals to loudspeaker means; wherein said means for selectively filtering said audio signals further comprises a combination of preprogrammed filters preset by a user.

Claim 24

The invention of claim 20 wherein said means for providing logic signals includes means for providing a logic signal for each active microphone.

Claim 25

The invention of claim 21 wherein said means for providing a logic signal for each active microphone comprises logic input means.

Claim 26

The invention of claim 20 wherein said means for selectively filtering said audio signals further comprises: means for selecting an operational mode of said microprocessor; means for selecting appropriate filter function parameters; and means for adjusting said selected filter function parameters.

Claim 27

The invention of claim 20 wherein said filter network means comprises three notch filters.

Claim 28

The invention of claim 24 wherein center frequencies of said notch filters are programmable.

Claim 29

The invention of claim 20 wherein said filter network means further comprises four tone control filters.

Claim 30

The invention of claim 25 wherein said tone control filters are programmable.

Claim 33

The method of claim 28 wherein the step of selectively filtering the audio signals further comprises the steps of: a) selecting an operational mode of the microprocessor; b) selecting appropriate filter function parameters; and c) adjusting the selected filter function parameters.