Method and apparatus for audio communication
First Claim
Patent Images
1. A method for audio communication comprising the steps of:
- receiving a plurality of digital audio samples in a memory,transmitting said digital audio samples when a predetermined number thereof have been accumulated,detecting that a current sample does not represent voice activity, transmitting all samples stored in said memory irrespective of whether or not there are said predetermined number thereof, andsuspending transmission of said samples;
detecting that a current sample represents a resumption of voice activity, resuming said transmitting of said samples, andtransmitting an indication of the duration of said suspension.
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Abstract
Audio communication apparatus which facilitates reduction of data network traffic. The communication apparatus distinguishes between voice activity and silence or background noise. Upon termination of voice activity the apparatus output the contents of it memory thus far for transmission over the data network. When voice activity is resumed after a period of inactivity, the transmission of voice data is resumed and an indication of the elapsed time between the previous voice samples and the current samples is also transmitted to a receiving terminal to allow correct timing of the output of the resumed transmission of the voice samples.
56 Citations
10 Claims
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1. A method for audio communication comprising the steps of:
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receiving a plurality of digital audio samples in a memory, transmitting said digital audio samples when a predetermined number thereof have been accumulated, detecting that a current sample does not represent voice activity, transmitting all samples stored in said memory irrespective of whether or not there are said predetermined number thereof, and suspending transmission of said samples; detecting that a current sample represents a resumption of voice activity, resuming said transmitting of said samples, and transmitting an indication of the duration of said suspension. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for audio communication comprising the steps of:
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receiving a number of digital audio samples and producing an audio output therefrom, receiving further audio samples after a suspension in transmission of said audio samples, receiving an indication of the duration of the suspension in transmission of said audio samples, and resuming said production of said audio output according to said indication, wherein said suspension is in response to a current sample that does not represent audio information.
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8. A method for audio communication comprising the steps of:
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receiving a number of digital audio samples and producing an audio output therefrom, receiving further audio samples after a suspension of transmission of said audio samples, receiving an indication of the duration of the suspension in transmission of said audio samples, and resuming said production of said audio output according to said indication, wherein the step of producing comprises compensating for transient network load and clock drift. - View Dependent Claims (9)
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10. A system for audio communication comprising:
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means for receiving a plurality of digital audio samples in a memory, means for transmitting said digital audio samples over a data network when a predetermined number thereof have been accumulated, means for detecting that a current sample does not represent voice activity, means for transmitting all samples stored in said memory over said data network irrespective of whether or not there are said predetermined number thereof, and means for suspending transmission of said samples; means for detecting that a current sample represents a resumption of voice activity, means for resuming said transmitting of said samples, and means for transmitting an indication of the duration of said suspension.
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Specification