Adjustable CODEC with adjustable parameters
First Claim
Patent Images
1. An adjustable CODEC for compression and decompression of signals comprising:
- an input for receiving an audio signal;
a memory storage device having a plurality of audio compression schemes stored thereon for compressing said audio signal;
an encoder for forming a first compressed digital bit stream, said encoder cooperatively connected to said memory storage device;
at least one interface selectively connecting an output from said encoder to a node of a selected first one of a plurality of digital transmission facilities;
a decoder having a decompression unit having a plurality of programmed audio decompression schemes for decompressing a received compressed digital data bit stream into a decompressed signal;
an input of said decoder selectively connected by said at least one interface to said node of said selected first one of said plurality of digital transmission facilities; and
an output connected to said decoder for outputting said decompressed signal.
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Abstract
An audio digital CODEC can be connected to a plurality of digital transmission facilities. The CODEC has a plurality of programmable compression schemes which are upgradeable and downloadable. One of the programmable compression schemes is provided with various parameters that when changed affect the quality of the resultant audio. These psycho-acoustic parameters include the standard ISO parameters and additional parameters and can be monitored and controlled by a user.
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Citations
57 Claims
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1. An adjustable CODEC for compression and decompression of signals comprising:
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an input for receiving an audio signal;
a memory storage device having a plurality of audio compression schemes stored thereon for compressing said audio signal;
an encoder for forming a first compressed digital bit stream, said encoder cooperatively connected to said memory storage device;
at least one interface selectively connecting an output from said encoder to a node of a selected first one of a plurality of digital transmission facilities;
a decoder having a decompression unit having a plurality of programmed audio decompression schemes for decompressing a received compressed digital data bit stream into a decompressed signal;
an input of said decoder selectively connected by said at least one interface to said node of said selected first one of said plurality of digital transmission facilities; and
an output connected to said decoder for outputting said decompressed signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. An adjustable CODEC for compression and decompression of signals comprising:
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an input for receiving an audio signal;
an analog to digital converter for converting said audio signal to a digital audio bit stream;
a memory storage device having a plurality of audio compression schemes stored thereon for compressing said audio signal;
a parameter input unit for inputting and adjusting at least one parameter level of one of said plurality of audio compression schemes;
an encoder for forming a first compressed digital bit stream cooperatively connected to said parameter input unit;
at least one interface selectively connecting an output from said encoder to a node of a selected first one of a plurality of digital transmission facilities;
a decoder having a decompression unit having a plurality of programmed audio decompression schemes for decompressing a received compressed digital data bit stream into a decompressed signal;
an input of said decoder selectively connected by said at least one interface to said node of said selected first one of said plurality of digital transmission facilities; and
an output connected to said decoder for outputting said decompressed signal.
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Specification