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Speex Audio Codec, Version 1.2
https://www.loc.gov/preservation/digital/formats/fdd/fdd000259.shtml
Speex Audio Codec, Version 1.2. Description. Speech codec designed for packet networks and voice over IP (VoIP) applications but not for mobile phones. File-based compression is also supported. The flexible codec is based on Code Excited Linear Prediction (CELP) and supports a wide range of speech quality and bit-rates.
Open spx file - File-Extensions.org
https://www.file-extensions.org/spx-file-extension
Audio and sound file type. spx file icon: The spx files extension is mainly used for Speex encoded audio format, based on open source/free software patent-free project, developed by Xiph.Org Foundation. Speex is based on CELP and is designed to …
SPX File Extension - What is an .spx file and how do I ...
https://fileinfo.com/extension/spx
An SPX file is an audio file saved in the Ogg Vorbis container format and encoded with the Speex Audio codec. It supports voice compression at 2 to 44 kbps and supports 8 kHz, 16 kHz, and 32 kHz compression in the same bitstream.
Ogg Speex Audio Format
https://www.loc.gov/preservation/digital/formats/fdd/fdd000260.shtml
spx: The specification states that Speex tools (speexenc, speexdec) do not rely on the extension; any extension will work. Internet Media Type: audio/x-speex: For Speex-in-Ogg, from the main part of the specification. However, the recommended practice now seems to use the codecs parameter as described in RFC 5334. Internet Media Type: audio/ogg; codecs=speex
Speex - VideoLAN Wiki
https://wiki.videolan.org/Speex/
Speex is a deprecated speech-oriented audio codec designed for use over packet networks (e.g. HTTP, local network use) and VoIP applications. As of 2013, Speex.org recommends parties consider Opus instead, calling the Opus codec superior. It supports compression in a lossy way.
Speex: a free codec for free speech
Speex is an Open Source/Free Softwarepatent-free audio compression format designed for speech. by providing a free alternative to expensive proprietary speech codecs. Moreover, Speex is well-adapted to Internet applications and provides useful features that are not present in most other codecs. Finally, Speex is part of the
Speex: A free codec for free speech
https://www.speex.org/software/
OpenACM Codec This allowed Speex to be used in NetMeeting. Speex for Windows Edmunt Pienkowsky's bundle of Speex for Windows, including an ACM codec that will get Speex to work in NetMeeting. Winamp and Cool Edit Plugins Written by Case Speex XMMS plugin Written by Jens Burkal, <[email protected]> Ogg Vorbis, Speex, and FLAC DirectShow Filters
Vocoder demonstration using a Speex audio codec …
https://www.st.com/resource/en/application_note/cd00204907-vocoder-demonstration-using-a-speex-audio-codec-on-stm32f101xx-and-stm32f103xx-microcontrollers-stmicroelectronics.pdf
The .spx extension refers to a speech message compressed with the Speex codec. The main codes for recording and playing in the record and play application are quite similar. The main code for recording encodes the data and stores them into the embedded Flash
Speex - Wikipedia
https://en.wikipedia.org/wiki/Speex
Speex is an audio compression codec specifically tuned for the reproduction of human speech and also a free software speech codec that may be used on VoIP applications and podcasts. It is based on the CELP speech coding algorithm. Speex claims to be free of any patent restrictions and is licensed under the revised BSD license. It may be used with the Ogg container format or …
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