Multi-channel recording system for a general purpose computer
AssigneeInternational Business Machines Corporation
InventorAlexander A. Goldin
Life of this patent
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Abstract
Multi-channel recording system for audio signals comprising a general purpose computer (13) having a sound card (18) with two analog-to-digital converters (20, 22) for receiving two analog audio signals and recording these signals into digital form into a memory, and comprising an analog multiplexer (10, 12) arranged to combine a plurality n of input audio signals in analog form and to supply two resulting multiplexed signals (14, 16) to the analog-to-digital converters (20, 22), the computer (13) being arranged to function as a digital de-multiplexer (28, 30) for recovering the input audio signals in digital form and recording them into memory.
Claims9
A multi-channel recording system for audio signals comprising:
- an analog frequency division multiplexer arranged to combine a plurality of input audio signals in analog form into a resulting multiplexed signal;
- an analog-to-digital converter for receiving the resulting multiplexed signal from the analog frequency division multiplexer and converting the resulting multiplexed signal into digital form;
- and,
- a digital de-multiplexer for recovering the plurality of input audio signals in digital form and recording them into a memory.
Dependencies are inferred from the claim text.