Q: What languages are supported by LID?
A: Please see List of supported LID Languages. For more details, see LID technology documentation.
Tag: SPE
Q: What languages are supported by KWS?
A: Please see List of supported KWS Languages. For more details, see KWS technology documentation.
Q: How can I add new language to LID?
A: There are multiple methods to train a new language, please see article in Components > Speech Technologies > LID.
Q: Does SPE have REST API?
A: Yes. Documentation is here: https://download.phonexia.com/docs/spe.
Q: Does the system come as an API?
A: Yes, the system comes as an API (for the production license).
Q: How can I tell in which format the .wav file is?
A: From the utilities in the package*, you can find it in ffprobe <file_name>, it will write out the info about the file.
*Utility “ffprobe” is not included in our package(s). It is part of ffmpeg (https://ffmpeg.org/ffprobe.html) and is necessary to be installed separately.
Q: Do the language-prints (LPs) extracted from audio sources depend on the currently available language pack?
A: The language-prints do not depend on the current language pack used. You may use them for both training a new language pack and testing/comparing against an existing language pack.
The language-prints need to be compatible only with the model of LID used for language-print extraction.
Q: What are the recommendations for LID adaptation set?
A: The following is recommended:
For adding new language to language pack
- 20+ hours of audio for each new language model (or 25+ hours of audio containing 80% of speech)
- Only 1 language per record
For adapting the existing language model (discriminative training)
- 10+ hours of audio for each language
- May be done on customer site. May be done in Phonexia using anonymized data (= language-prints extracted from a .wav audio)
Q: How to know what technologies are running on the server?
A: You can receive the list of running/configured technologies by running query get /technologies or using the phxadmin utility with parameter configure-tech
Q: How to choose answer format from server (xml/json)?
A:
- Via HTTP header “Accept” parameter (application/json; application/xml)
- Via request query “format=json/xml”
If the format is not defined (or the HTTP header “Accept” parameter has one of these values: application/*,*/*,*), server will return json.
Q: I am getting SPE related error after starting the Browser (e.g. SPE server crashed, Error Downloading…, unable to connect to the SPE server, unable to start the localhost…)
A:
Windows:
- Open terminal in folder where PhxBrowser.exe is located (hold Shift and click right mouse button in free space in windows explorer and select “open command window here”)
- Run PhxBrowser software with command:
PhxBrowser.exe /spe-debug /spe-output
- PhxBrowser software will start with “SPE output” tab which shows the debug output of SPE
Linux:
- Run PhxBrowser software in terminal with command:
./PhxBrowser --spe-debug --spe-output
- PhxBrowser software will start with ” SPE output” tab which shows debug output of SPE
Q: Why does the system show high score (>90%) even for non-targets?
A: Threshold for score isn’t set up correctly. Adjust speaker score sharpness value to calibrate the recalculation.
Please see Calibration in technology documentation.
Q: What to do with the ApplicationStartup: Unhandled exception: BsapiException error?
When running SPE, the following error occurs:
[Error] ApplicationStartup: Unhandled exception: BsapiException: SWaveformSegmenterI(/mnt/phxspe/home/phx/storage/dfs/a1cabcf7-c761-49f1 -a9bc-0a8209a09fd9.opus Requested segment (78056, 102056) is out of waveform range (0,91840).
A: It means that this opus file is created improperly and declares internally (in header) much more audio than available in real file.
Please check your audio source/originator for proper functionality.
Or use ffmpeg / sox utility as preprocessor of the audio and do audio normalization by self-conversion from opus to opus before recordings are processed through SPE.
Q: How do I get results for a pending operation?
A:
If server responds on pending request by status 200 – OK, the body of the response will have the result inside (server already has the result in cache memory and there is no need to process the file again).
If server responds on pending request by status 202 – Accepted, server will create task and server will begin to process the file. In response HTTP header (in parameter “Location”) there is path for pending resource. In the body there is a ID of pending operation.
- Polling: Client asks on the pending resource (e.g. “get /pending/{ID}). Server will answer with status 200 and in the body there is a status of operation: “running”. Client will repeat this request periodically with free time gaps until server will respond with 303 – See Other status (in a body there will be status “finished”). In HTTP header of this operation (in parameter “Location”) is a resource path for the operation. It is possible to use operation ID in body of the response. Client will ask for resource “get /done/{ID}”, where the final result will be.
- WebSocket: Client asks for websocket creation by get /pending/{ID}. In query header there will be the parameters Upgrade, Connection, Sec-WebSocket-Version, Sec-WebSocket-Key. Authentication has to be a part of the header (HTTP basic or Session – according the server setup). Result of asynchronous operation will be send by the server by websocket client – client doesn’t have to ask the server repeatedly.
Example of HTTP header:
GET /pending/ec563083-3d9b-457d-a0ac-24b197bc222f HTTP/1.1 Host: server.example.com Upgrade: websocket Connection: Upgrade Sec-WebSocket-Key: x3JJHMbDL1EzLkh9GBhXDw== Sec-WebSocket-Version: 13 X-SessionID: 258f505c-a6fa-4c3f-8a87-b048874ac6aa