SYSTEM AND METHOD FOR AUTOMATIC IDENTIFICATION OF SPEECH CODING SCHEME
First Claim
1. A method for speech decoding, comprising:
- accepting communication packets that carry encoded speech, which was encoded in accordance with a speech coding scheme whose identity is not accessibly identified in the communication packets;
using a processor, processing the encoded speech so as to automatically identify the speech coding scheme that was used to encode the speech; and
decoding the encoded speech using the identified speech coding scheme.
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Accused Products
Abstract
Methods and systems for extracting speech from such packet streams. The methods and systems analyze the encoded speech in a given packet stream, and automatically identify the actual speech coding scheme that was used to produce it. These techniques may be used, for example, in interception systems where the identity of the actual speech coding scheme is sometimes unavailable or inaccessible. For instance, the identity of the actual speech coding scheme may be sent in a separate signaling stream that is not intercepted. As another example, the identity of the actual speech coding scheme may be sent in the same packet stream as the encoded speech, but in encrypted form.
20 Citations
20 Claims
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1. A method for speech decoding, comprising:
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accepting communication packets that carry encoded speech, which was encoded in accordance with a speech coding scheme whose identity is not accessibly identified in the communication packets; using a processor, processing the encoded speech so as to automatically identify the speech coding scheme that was used to encode the speech; and decoding the encoded speech using the identified speech coding scheme. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Apparatus for speech decoding, comprising:
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an interface, which is configured to accept communication packets that carry encoded speech, which was encoded in accordance with a speech coding scheme whose identity is not accessibly identified in the communication packets; and a processor, which is configured to process the encoded speech so as to automatically identify the speech coding scheme that was used to encode the speech, and to decode the encoded speech using the identified speech coding scheme. - View Dependent Claims (17, 18, 19, 20)
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Specification