Distributed speech recognition using one way communication
View Patent ↗A speech recognition client sends a speech stream and control stream in parallel to a server-side speech recognizer over a network. The network may be an unreliable, low-latency network. The server-side speech recognizer recognizes a first portion of the speech stream and, if a predetermined criterion is satisfied by the speech recognition result, waits until the speech recognizer has been reconfigured before recognizing a second portion of the speech stream. The speech recognition client receives recognition results from the server-side recognizer in response to requests from the client. The client may remotely reconfigure the state of the server-side recognizer during recognition.
1. A computer-implemented method comprising:
(A) at a speech recognition server:
(A) (1) receiving a speech stream and a control stream from a client;
(A) (2) using an automatic speech recognition engine in a first configuration state to recognize a first portion of the speech stream and thereby to produce a first speech recognition result;
(B) at the speech recognition server,
(B) (1) analyzing a first control message in the control stream to determine whether the first speech recognition result satisfies a first predetermined criterion specified by the control stream;
(B) (2) waiting until the automation speech recognition engine has been reconfigured before continuing to (C); and
(C) at the speech recognition server, responsive to receiving a second control message, using the automatic speech recognition engine in a second configuration state to recognize a second portion of the speech stream and thereby to produce a second speech recognition result.
2. The method of claim 1 , wherein (A)(1) further comprises receiving the speech stream and the control stream in a multiplexed stream from the client.
3. The method of claim 2 , wherein (A)(1) further comprises demultiplexing the multiplexed stream received from the client to produce the speech stream and the control stream.
4. The method of claim 1 , wherein (A)(1) further comprises receiving an encrypted speech stream and an encrypted control stream from the client.
5. The method of claim 4 , wherein (A)(1) further comprises decrypting the encrypted speech stream and the encrypted control stream.
6. A system comprising at least one non-transitory computer-readable medium having computer program instructions stored thereon, wherein the computer program instructions are executable by at least one computer processor to perform a method comprising:
(A) at a speech recognition server:
(A) (1) receiving a speech stream and a control stream from a client;
(A) (2) using an automatic speech recognition engine in a first configuration state to recognize a first portion of the speech stream and thereby to produce a first speech recognition result;
(B) at the speech recognition server,
(B) (1) analyzing a first control message in the control stream to determine whether the first speech recognition result satisfies a first predetermined criterion specified by the control stream;
(B) (2) waiting until the automation speech recognition engine has been reconfigured before continuing to (C); and
(C) at the speech recognition server, responsive to receiving a second control message, using the automatic speech recognition engine in a second configuration state to recognize a second portion of the speech stream and thereby to produce a second speech recognition result.
7. The system of claim 6 , wherein (A)(1) further comprises receiving the speech stream and the control stream in a multiplexed stream from the client.
8. The system of claim 7 , wherein (A)(1) further comprises demultiplexing the multiplexed stream received from the client to produce the speech stream and the control stream.
9. The system of claim 6 , wherein (A)(1) further comprises receiving an encrypted speech stream and an encrypted control stream from the client.
10. The system of claim 9 , wherein (A)(1) further comprises decrypting the encrypted speech stream and the encrypted control stream.
11. A computer-implemented method comprising:
(A) at a speech recognition server:
(A) (1) receiving a speech stream and a control stream from a client;
(A) (2) using an automatic speech recognition engine in a first configuration state to recognize a first portion of the speech stream and thereby to produce a first speech recognition result;
(B) at the speech recognition server, if the first speech recognition result satisfies a first predetermined criterion specified by the control stream, then waiting until the speech recognition engine has been reconfigured before continuing to (C); and
(C) at the speech recognition server, using the automatic speech recognition engine in a second configuration state to recognize a second portion of the speech stream and thereby to produce a second speech recognition result; and
(D) during (B), receiving by the speech recognition server, from the client, a third portion of the speech stream.
12. A system comprising at least one non-transitory computer-readable medium having computer program instructions stored thereon, wherein the computer program instructions are executable by at least one computer processor to perform a method comprising:
(A) at a speech recognition server:
(A) (1) receiving a speech stream and a control stream from a client;
(A) (2) using an automatic speech recognition engine in a first configuration state to recognize a first portion of the speech stream and thereby to produce a first speech recognition result;
(B) at the speech recognition server, if the first speech recognition result satisfies a first predetermined criterion specified by the control stream, then waiting until the speech recognition engine has been reconfigured before continuing to (C); and
(C) at the speech recognition server, using the automatic speech recognition engine in a second configuration state to recognize a second portion of the speech stream and thereby to produce a second speech recognition result; and
(D) during (B), receiving by the speech recognition server, from the client, a third portion of the speech stream.