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STT: Results explained

…}, { “time_slot” : 19, “start_time” : 16850000, “end_time” : 17550000, “word” : “at”, “posterior_probability” : 0.000000000000003186612474256685, “channel” : }, { “time_slot” : 19, “start_time” : 16850000, “end_time” : 17550000, “word” : “to”, “posterior_probability” : 6.2535191806661645e-24, “channel” : }, { “time_slot” : 20, “start_time” : 17550000, “end_time” : 17850000, “word” : “time“, “posterior_probability” : 0.9984032848949292, “channel” : }, { “time_slot“…

Understand SPE configuration file

…that ‘stream.rtp.timeout‘ is deprecated since SPE 3.23.x input_stream.rtp.timeout = 10.0 Sets the timeout limit for RTP stream incoming data – when no audio data come from the stream for the defined time, the stream is automatically closed. Default value is 10 seconds. output_stream.rtp.timeout # Set timeout for output stream RTP socket in seconds. # If output stream doesn’t send any…

Releases and Changelogs (SPE)

…deadlock in MySQL database when moving files to calibration set [#4946] Fixed time ranges doesn’t properly work for multichannel recordings and for FLAC and OPUS [#4946] Fixed parameter “from_time” may cause corruption of processing data [#4950] Fixed STT may produce incorrect time stamps in confusion network result for multichannel recordings [#4985] Fixed Removing recording from Speaker model does not invalidate…

Understand SPE configuration

timeout for HTTP stream in seconds. # If stream doesn’t receive any data for given time, then stream is closed. stream.http.timeout = 30 # Enable RTP stream subsystem stream.rtp.enable = true # IP address for create rtp sessions stream.rtp.bind_ip = 0.0.0.0 # Sets starting port for creating RTP sessions stream.rtp.min_port = 10000 stream.rtp.max_port = 11000 # Number of max opened…

Understand SPE workers configuration

…CPU cores in the server. Example: Czech STT on stream is approx. 4 times faster than realtime, i.e. 1 CPU core can process 4 realtime streams simultaneously. So a server with 8 CPU cores running only STT stream can be configured as follows: keep 1 core dedicated for operating system and SPE remaining 7 cores can handle 28 realtime workers…

Terms of Service

…registration and personal information given to PHONEXIA is true, accurate, and current. At its discretion, PHONEXIA reserves the right to terminate its relationship with any Member who is found to have submitted inaccurate information or misrepresented themselves in any manner. 1.4. Amendments to the Agreement. The Agreement may be amended at any time by PHONEXIA. An updated version of the…

STT: How to properly convert Confusion Network results to One-best

…each alternative, amend its end time to match start time of following alternative   Alternatively, the second step can be done right away when building the result: loop through all CN timeslots from start to end in each timeslot, get the input alternative with highest score and if it’s not <null/> or _DELETE_ set the end time of last alternative…

Open Source Acknowledgement

…Zlib mkl freeware under ISSL (Intel Simplified Software License): End User License Agreements mman-win32 (Windows only) MIT ogg BSD-style license onnxruntime MIT, onnxruntime/LICENSE at main · microsoft/onnxruntime Copyright (c) 2018 Microsoft Corporation openfst Apache License openssl OpenSSL opus BSD poco The Boost Software License 1.0 pugixml MIT range-v3 BSL-1.0 rapidjson MIT scnlib Apache License 2.0 spdlog MIT speex revised BSD…

Understand SPE database

…configuration (users, roles, etc.). SQLite database updates are also handled automatically by SPE – from time to time, as we add new features or improve existing functionality, the database internal structure may get updated in newer SPE versions. When using SQLite, if new SPE version detects that database needs an update, it’s done fully automatically behind the scenes. [1] If…

Time Analysis Extraction (TAE)

Technology description Time Analysis Extraction (TAE) by Phonexia extracts base information from dialogue in a recording, providing essential knowledge about conversation flow. That makes easy to identify: long reaction time crosstalk responses of speakers in both channels speed of speech measured in phonemes per second Typical usage domain It is typically used in contact centers for indicating weak moments in…

Measuring of a software processing speed – what is the FtRT (Faster than Real Time)

Faster than Real Time (FtRT) metric is developed for defining software performance reference point. Using this metric you can collect “benchmark” data of real processing speed for reviewed software, which should be found – and reproduced – on exactly defined HW. Then, comparing various benchmarks result, you can compare performance of the specified software and its parts on different HW…

Speech to Text (STT)

…including discriminative training and neural network-based features Output One-best transcription – i.e. a file with a time-aligned speech transcript (time of word’s start and end) Variants for transcriptions – i.e. hypotheses for words at each moment (confusion network) or hypotheses for utterances at each slot (n-best transcription) Processing speed – several versions available: from 8x faster than real-time processing on…

FAQs (PSP)

…initialization of SPE engine takes too long. Phonexia Browser software treats it as initialization failure and kills the server. You can fix this by doing the following: Increase timeout in Settings > Speech Engine tab > First connection timeout Use fewer instances of technologies, thus letting the Speech Engine to start faster Use smaller models of technologies in FAQ Phonexia…

Understand SPE processing queue

…task has higher priority, i.e. gets handled even though it’s placed farther in the queue) When processing is done, the task state changes to “finished” and the final result is available for pickup for a limited time only. The time limit is defined by server.finished_task_timeout setting in SPE configuration file, default value is 60 seconds. The limit exists so that…