Convert FLAC to SPX (Speex)

FLV MP3 Converter converts FLAC to SPX (Speex) easily and quickly. Speex is an Open Source/Free codec patent-free audio compression format designed for speech. The Speex codec aims to lower the barrier of entry for voice applications 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.

FLV MP3 Converter is also a professional audio conversion software. The software supports almost any video and audio formats such as AU, MP3, AAC for iPod/iPhone/iPad/iTunes/DSi, SPX, MPA, ALAC (Apple Lossless), WAV, AIFF, FLAC, CAF (Core Audio Format), etc. It could convert DTS to OGG, AC3 to VOC, AC3 to M4A (MPEG-4 audio), DVD to M4B (MPEG-4 audiobook), MOV to WMA, ADX to AC3, 3GP to MPA, AAC to DTS, and so on.

FLV MP3 Converter supports batch conversion and, is full compatible with 32-bit and 64-bit editions of Vista and Windows 7.

What is FLAC?
Free Lossless Audio Codec (FLAC) is a file format for lossless audio data compression. Being lossless, FLAC does not remove information from the audio stream, as lossy compression formats such as MP3, AAC, and Vorbis do. FLAC's primary author is Josh Coalson. FLAC reduces bandwidth and storage requirements without sacrificing the integrity of the audio source. A digital audio recording (such as a CD track) encoded to FLAC can be decompressed into an identical copy of the audio data. Audio sources encoded to FLAC are typically reduced in size 40 to 50 percent (46% according to their own comparison). FLAC is suitable for everyday audio playback and archival, with support for tagging, cover art and fast seeking. FLAC's free and open source royalty-free nature makes it well-supported by many software applications, but FLAC playback support in portable audio devices and dedicated audio systems is limited at this time.

What is SPX?
Speex is a patent-free audio compression format designed for 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 (3-clause) BSD license. It may be used with the Ogg container format or directly transmitted over UDP/RTP. The Speex designers see their project as complementary to the Vorbis general-purpose audio compression project. Speex is a lossy format, meaning quality is permanently degraded to reduce file size. Speex is based on CELP and is designed to compress voice at bitrates ranging from 2 to 44 kbps. Some of Speex's features include:

• Narrowband (8 kHz), wideband (16 kHz), and ultra-wideband (32 kHz) compression in the same bitstream
• Intensity stereo encoding
• Packet loss concealment
• Variable bitrate operation (VBR)
• Voice Activity Detection (VAD)
• Discontinuous Transmission (DTX)
• Fixed-point port
• Acoustic echo canceller
• Noise suppression

Note that Speex has a number of features that are not present in other codecs, such as intensity stereo encoding, integration of multiple sampling rates in the same bitstream (embedded coding), and a VBR mode.

Step-by-Step Instructions to Convert FLAC to SPX (Speex):

1. Click Here to Download FLV MP3 Converter
2. Install the Software by Instructions
3. Launch FLV MP3 Converter by Clicking Start -> All Programs -> FLV MP3 Converter -> FLV MP3 Converter
4. Choose FLAC Files


Click "Add Files" to choose FLAC files.


Choose one or more FLAC files you want to convert and then click Open.

FLV MP3 Converter will open FLAC files and get file information of the file such as duration, bit rate, sample rate, and channels, and then show the information of FLAC file at conversion list.



5. Choose Output Format


Choose "to SPX (Speex)" at Output Format combo-box.


6. [Optional, for advanced user] Set SPX Encoding Parameters


If you want to change SPX encoding parameters such as bit rate, sample rate, channels, or volume, please click "Options".


And then, switch to tab "Audio" and choose "SPX (Speex) (*.spx)" at "Output Format", and then set encoding parameters.


7. Convert FLAC to SPX (Speex)


Click "Convert" to convert FLAC files to SPX (Speex).


FLV MP3 Converter is converting FLAC files to SPX (Speex).


8. Play and Browse SPX File


When conversion completes, you can right-click converted item and choose "Play Destination" to play the outputted SPX file; or choose "Browse Destination Folder" to open Windows Explorer to browse the outputted SPX file.


9. Done

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FLAC to SPX Conversion Software is 100% clean and safe to install. It's certified by major download sites.

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