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Speex: A free codec for free speech
https://speex.org/samples/
Speex Samples (based on version 1.2-beta1) Samples coded with Speex have been decoded back to wav format so you don't need to have a Speex decoder to listen to them. Narrowband. These samples are coded using narrowband Speex mode (more bit-rates available) Male. original; coded 4 kbps; coded 4 kbps VBR; coded 6 kbps; coded 8 kbps; coded 8 kbps ...
Sample code - speex.org
https://speex.org/docs/manual/speex-manual/node13.html
Sample code This section shows sample code for encoding and decoding speech using the Speex API. The commands can be used to encode and decode a file by calling: % sampleenc in_file.sw | sampledec out_file.sw where both files are raw (no header) files encoded at 16 bits per sample (in the machine natural endianness). sampleenc.c
Sample SPX Files Download - Get Examples Instantly
https://filesamples.com/formats/spx
Speex Audio Compression Format. Below you will find a selection of sample .spx audio files for you to download. On the right there are some details about the file such as its size so you can best decide which one will fit your needs.
GitHub - undali/speex_resampler: Speex audio re-sampler ...
https://github.com/undali/speex_resampler
speex_resampler. Speex audio re-sampler sample project. This demo project resample 48K audio to 44.1K sample rate using speex library module. There is a python script to record audio from microphone at 48K sample rate.
This is an example of Speex - YouTube
https://www.youtube.com/watch?v=EJlhYIPRE2o
an audio compression codec specifically tuned for the reproduction of human speech.
Audio sample rate converters comparison
https://lastique.github.io/src_test/
The delay is expressed in the amount of input samples (per channel) that the resampler consumes before it produces the first output sample. For convenience, delay values expressed in milliseconds are also given. Note that speex resampler by default conceals the delay by producing silence samples in the beginning of the output.
SPEEX is a free audio codec | EMCU
http://www.emcu.eu/2017/04/01/speex-is-a-free-audio-codec/
Before introducing all the Speex features, here are some con cepts in speech coding that help better understand the rest of the manual. Although some are general concepts in speech/audio processing, others are specific to Speex. Sampling rate The sampling rate expressed in Hertz (Hz) is the number of samples taken from a signal per second.
Ogg Speex Audio Format - loc.gov
https://www.loc.gov/preservation/digital/formats/fdd/fdd000260.shtml
audio/speex: Proposed in various drafts of RTP Payload Format for the Speex Codec. e.g., ... These are identified with packetno starting from 2 and the granulepos is the number of the last sample encoded in that packet. The last of these packets has the end of stream (e_o_s) flag is set to 1. History :
Sample Audio Files - Download Example Audio Formats
https://filesamples.com/categories/audio
Audio File Samples. Here you can find the types of sample audio file formats we have available for download. Currently there are 54 audio formats supported. Extension. Name. 8SVX. 8-Bit Sampled Voice. Get .8svx samples.
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.
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