Speex 4-Encoder/decoder command line

The basic description of speex includes a command line encoder and decoder. these tools generate and read the speex files packaged in the Ogg container. although it can encapsulate speex in any container, Ogg is recommended as a file container. this section describes how to use the command line tool for the speex file of Ogg.

4.1 speexenc
The speexenc unit is used to create a speex file through a raw PCM or wave file. You can use the following command:
Speexenc [operation] input_file output_file
Values input_file and output_file correspond to stdin and stdout respectively.

Valid settings:
-Narrowband (-N) indicates that the input signal of speex is a narrow band (8 kHz). This is the default value.
-Wideband (-W) tells speex that the input signal is broadband (16 kHz)
-Ultra-Wideband (-u) tells speex to treat the input signal as ultra-broadband (32 kHz)
-Quality N: sets the encoding quality (0-10). The default value is 8.
-Bitrate n encoding bit rate (bit rate less than or equal to N)
-Enable VBR (Variable Bit Rate). VBR is disabled by default.
-The abr n is enabled at N kbps (average bit rate) and is disabled by default.
-Vad enables VAD (Voice Activity Detection), which is disabled by default.
-Dtx enables dtx (intermittent transmission), which is disabled by default.
-Nframes n packages N frames to each Ogg package (which saves space)
-The higher the value of-N, the lower the encoding speed and quality trade-off (default value: 3)
-V lengthy operations to print the currently used Bit Rate
-Help (-h) print help
-Version (-V): Print Version Information

Speex content:
-Comment adds the given string as additional content. This can be used multiple times.
-Author of author
-Title

Bare input settings:
-Rate N bare input sampling rate
-Stereo assumes that the raw video is stereo.
-Le Bare input is a small-end
-Be bare input is large-end
-8-bit bare input is 8-bit unsigned
-The 16-bit bare input is 16-Bit Signed

4.2 speexdec
The unit of speex decoding is used to decode the speex file. It can be called if it is used:
Speexdec [operation] speex file [output file]
If no output file is specified, the file will be played through the sound card.

Valid settings:
-ENH: enable post-filter (default)
-No-ENH: Disable post-filter.
-Force-NB: Use narrowband decoding forcibly
-Force-WB forced broadband Decoding
-Force-ultra-wideband Decoding
-Mono enforces single-channel decoding.
-Stereo forced stereo Decoding
-Rate N forced nhz sampling rate Decoding
-Packet-loss simulates n % random packet loss
-V lengthy operations to print the currently used Bit Rate
-Help (-h) print help

-Version (-V): Print Version Information