vavi-sound

Provides old school Japanese cell phone sounds library as javax.sound SPI
includes many ADPCM codecs and the SSRC sampling rate converter.

Status

SPI	Codec	Description	IN Status	OUT Status	SPI Status	Comment
midi	MFi	Japanese ring tone format	🚧	✅	✅	DoCoMo
midi	SMAF	YAMAHA ring tone format	🚧	✅	✅	au, Softbank
sampled	MFi	Japanese ring tone format	✅	✅	✅	DoCoMo
sampled	SMAF	YAMAHA ring tone format	✅	✅	✅	au, Softbank
sampled	CCITT ADPCM	G711, G721, G723	✅	✅	✅	G721 cellphone w/ Fuetrek chip
sampled	DVI ADPCM	DVI ADPCM	✅	✅	✅
sampled	IMA ADPCM	IMA ADPCM	✅	✅	✅ [1]
sampled	MA ADPCM	YAMAHA ADPCM	✅	✅	✅	cellphone w/ YAMAHA MA chip
sampled	MS ADPCM	Microsoft ADPCM	✅	✅	✅ [1]
sampled	OKI ADPCM	OKI ADPCM	✅	✅	✅ [1]
sampled	ROHM ADPCM	ROHM ADPCM	✅	✅	✅	cellphone w/ Rohm chip
sampled	VOX ADPCM	VOX ADPCM	✅	✅	✅ [1]
sampled	YAMAHA ADPCM	YAMAHA ADPCM	✅	✅	✅ [1]
sampled	YM2068 ADPCM	YAMAHA ADPCM	✅	✅	-	same as YAMAHA ADPCM
sampled	ssrc	resampling	✅	-	✅	need to wait for phase 1

_{[1] wav file readable}

Install

• https://jitpack.io/#umjammer/vavi-sound

Usage

FAQ

Q. can I use SSRC sampling converter under LGPL license?

A. yes you can, follow those steps

• create a separated jar (ssrc.jar) file including ssrc classes. (never include those .class files into your application jar file)
  • vavi/sound/pcm/resampling/ssrc/SSRC.class
  • vavi/util/SplitRadixFft.class
  • vavi/util/I0Bessel.class
• ⚠ caution:
  • your application complies with the LGPL. customers have a right to reverse engineering your application.
  • if you include ssrc.jar with a distribution, you must offer a way to get ssrc source code.
• see also
  • https://opensource.org/licenses/LGPL-2.1
  • http://www.gnu.org/licenses/lgpl-java.en.html

Tech Know

• github actions workflow on ubuntu java8 cannot deal line PCM_SIGNED 8000.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian

References

• https://github.com/shibatch/SSRC

TODO

• use Receiver instead of MetaEventListener
• ssrc: use nio pipe for 1st pass
  • on macos m2 ultra 1st pass is in a blink of an eye
• ima, ms adpcm: wav reader
  • tritonus:tritonus-remaining:org.tritonus.sampled.file.WaveAudioFileReader

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_{images by melody, cellphone}