Cross fade indicators
First Claim
Patent Images
1. A multi-channel mixing apparatus capable of mixing signals from at least two channels and visually indicating the status of the channels, comprising:
- a mixer;
at least two channels to be mixed by said mixer, said two channels being at least a first channel and a second channel;
a first and a second dual colored LED respectively associated with each of said first and second channels for indicating which of said first and said second channels to the mixing apparatus are active, wherein one color of said dual colored LED indicates its associated channel is currently active and the other color of the dual colored LED indicates its associated channel that is about to become active; and
means cooperating with said mixer for controlling said first and said second LEDs during mixing so that said first LED shows a first color when said first channel is active and a second color when said first channel is inactive, and said second LED shows a second color when said second channel is inactive and a first color when said second channel is about to become active or when fully active during a mixing transition between said first and said second channels.
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Abstract
A dual colored LED indicator is provided for each channel of an audio mixing console to enable an operator to determine the status of at least a first and second device. Preferably, a red indication from the LED indicates a device is active and a green indication from the LED indicates that a device is set to become active or has just become inactive. The invention enables an operator to determine which device is set to next become active in a cross fade operation.
23 Citations
18 Claims
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1. A multi-channel mixing apparatus capable of mixing signals from at least two channels and visually indicating the status of the channels, comprising:
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a mixer; at least two channels to be mixed by said mixer, said two channels being at least a first channel and a second channel; a first and a second dual colored LED respectively associated with each of said first and second channels for indicating which of said first and said second channels to the mixing apparatus are active, wherein one color of said dual colored LED indicates its associated channel is currently active and the other color of the dual colored LED indicates its associated channel that is about to become active; and means cooperating with said mixer for controlling said first and said second LEDs during mixing so that said first LED shows a first color when said first channel is active and a second color when said first channel is inactive, and said second LED shows a second color when said second channel is inactive and a first color when said second channel is about to become active or when fully active during a mixing transition between said first and said second channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A multi-channel audio mixing apparatus comprising:
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selection means for selecting at least a first channel which is an active channel and for selecting at least a second channel which is about to become active; a mixer having a fader means for mixing signals from said first channel and said second channel by fading down signals from said first active channel and fading up signals from a second channel which is about to become active during a fade interval T2-T1, where T1 is the beginning of the fade where the first channel is active and the second channel is inactive but about to become active, and where T2 is the end of the fade where the first channel has become inactive and the second channel has become active; a first indicator associated with said first channel for indicating that the first channel is active at T1 and continues to indicate that said first channel is active until T2; and a second indicator associated with said second channel for indicating that the second channel is about to become active at T1, whereupon both of said first and said second indicators indicate that said first and second channels are active during at least a portion of the fade interval T2-T1. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification